Control of cardiovascular risk factors and its determinants in the general population– findings from the STAAB cohort study
BMC Cardiovascular Disorders volume 17, Article number: 276 (2017)
While data from primary care suggest an insufficient control of vascular risk factors, little is known about vascular risk factor control in the general population. We therefore aimed to investigate the adoption of adequate risk factor control and its determinants in the general population free of cardiovascular disease (CVD).
Data from the Characteristics and Course of Heart Failure Stages A-B and Determinants of Progression (STAAB) Cohort Study, a population-based study of inhabitants aged 30 to 79 years from the general population of Würzburg (Germany), were used. Proportions of participants without established CVD meeting targets for risk factor control recommended by 2016 ESC guideline were identified. Determinants of the accumulation of insufficiently controlled vascular risk factors (three or more) were assessed.
Between December 2013 and April 2015, 1379 participants without CVD were included; mean age was 53.1 ± 11.9 years and 52.9% were female; 30.8% were physically inactive, 55.2% overweight, 19.3% current smokers. Hypertension, dyslipidemia, and diabetes mellitus were prevalent in 31.8%, 57.6%, and 3.9%, respectively. Treatment goals were not reached despite medication in 52.7% of hypertensive, in 37.3% of hyperlipidemic and in 44.0% of diabetic subjects. Insufficiently controlled risk was associated with male sex (OR 1.94, 95%CI 1.44–2.61), higher age (OR for 30–39 years vs. 70–79 years 4.01, 95%CI 1.94–8.31) and lower level of education (OR for primary vs. tertiary 2.15, 95%CI 1.48–3.11).
In the general population, prevalence of vascular risk factors was high. We found insufficient identification and control of vascular risk factors and a considerable potential to improve adherence to cardiovascular guidelines for primary prevention. Further studies are needed to identify and overcome patient- and physician-related barriers impeding successful control of vascular risk factors in the general population.
Cardiovascular disease (CVD) represents the major cause of hospital admission, disability in middle-aged and older patients, and remains the leading cause of death (40%) in Germany [1, 2]. The burden of CVD is maintained by the high prevalence of modifiable vascular risk factors in the population including an unhealthy lifestyle . Several national and international guidelines describe the principles of cardiovascular prevention in people without established CVD (primary prevention) [4,5,6,7]. Most guidelines tailor their recommendations according to the estimated absolute CVD risk (e.g. by applying risk scores) including the adoption of a healthy lifestyle in low risk persons (e.g. prudent eating habits, non-smoking, avoiding obesity, regular physical activity), and uptake of drug medication in the asymptomatic high risk population .
Previous studies reporting on the quality of adequate cardiovascular (CV) risk factor control in primary prevention were frequently based on samples derived from primary care. These studies suggested an insufficient implementation of CVD prevention strategies including management of obesity, blood pressure (BP), and lipid and glucose metabolism [8,9,10,11,12,13,14,15]. Little, however, is known about of the control of risk factors CVD in population-based samples . This is important as estimates originating from studies in primary care may not be representative of the general population because individuals attending a primary care physician usually have a reason to do so. Such selection and indication bias will profoundly affect prevalence estimates.
Therefore, we assessed in subjects without established CVD sampled from the general population of Germany the prevalence of CV risk factors, the frequency of inadequate risk factor control, and factors determining the accumulation of insufficiently controlled risk.
Study population and recruitment
The methodology of Characteristics and Course of Heart Failure Stages A-B and Determinants of Progression (STAAB) Cohort Study has been published previously . Briefly, STAAB was initiated in Dec 2013 to determine the prevalence and natural course of the early stages of heart failure in a representative sample (n = 5000) of the general population of Würzburg aged 30–79 years. Participants undergo a detailed examination at the joint survey unit of the Comprehensive Heart Failure Center (CHFC) and the Institute of Clinical Epidemiology and Biometry (ICE-B) of the University of Würzburg, Germany. The current report is based on the first planned interim-analysis of STAAB including n = 1468 participants, who had been enrolled by April 2015 (positive response rate 32.6%) . We excluded n = 89 (6.1%) participants with established CVD defined by self-reported history of coronary artery disease (n = 56), peripheral artery disease (n = 11), stroke (n = 28). Hence, the current report is based on n = 1379 subjects.
Assessment of cardiovascular risk factors
Sociodemographic status, information on smoking and on physical activity was obtained via face-to-face interview. History of CVD and medication intake was assessed by study physicians. BP values were given as median of up to three valid measurements. Low density liproprotein (LDL) cholesterol and glycated hemoglobin levels (HbA1c) levels were measured at the day of examination at the Central Core Laboratory of the University Hospital of Würzburg.
Treatment goals for cardiovascular risk factors
We identified the proportions of participants achieving the defined goals for risk factor control according to the most recent European Guidelines on CVD prevention in clinical practice (version 2016)  including: target BP <140/90 mmHg (<140/85 mmHg in subjects with DM type 2; <130/80 mmHg in DM type 1); target LDL cholesterol <115 mg/dl (<100 mg/dl in diabetics and participants at high risk [for definition, see below]); absence of tobacco abuse (self-reported in a structured interview); absence of overweight (body mass index ≤25 kg/m2); absence of diabetes mellitus (DM; no self-reported DM and HbA1c <6.5%); adequate glycemic control in treated diabetics (HbA1c <7.0%); and physical activity (≥150 min/week moderate activity or ≥75 min/week strenuous activity, operationalized by the IPAQ questionnaire ). All risk factors above recommended target that were not self-reported (high BP, high LDL-cholesterol and diabetes) were defined as unreported. For the definitions of the six uncontrolled CV risk factors and their subgroups, see: Additional file 1.
Determinants of accumulation of uncontrolled risk factors
We identified a priori a set of covariates that were potentially related to the control of CV risk factors including: age, sex, markers of socioeconomic status (level of education and income), and marital status [19,20,21,22]. In addition, we performed a sensitivity analysis investigating if the predictors of three or more uncontrolled risk factors differed by sex.
Absolute cardiovascular risk estimation with systematic COronary risk evaluation (SCORE)
To assess differences in prevalence of risk factor control across different CV risk groups, we applied the recently updated SCORE algorithm for Germany predicting 10-year risk of CV death ; SCORE has been derived from subjects without a constellation indicating increased vascular risk (as prior CVD or DM). The SCORE equation weights the following factors: age (40–69), sex, current smoking, systolic BP, and total cholesterol. For the present analyses, our sample was categorized according to thresholds recommended by the European Society of Cardiology into “low risk” (SCORE <1%), “moderate risk” (SCORE ≥1% and <5%), and “high to very risk” (SCORE ≥5%) [4, 24].
We calculated mean standard deviation (±SD) and median (quartiles) for continuous variables and proportions (%) for categorical variables. In univariate analyses, Fisher’s exact test or χ2- test for categorical and binary variables, Mann-Whitney U-test for continuous variables (non-normal distributions) and Kruskal-Wallis test were used as appropriate. Accumulation of uncontrolled risk factors (RR ≥140/90 mmHg [≥130/80 mmHg for subjects with diabetes]; LDL cholesterol ≥115 mg/dl; tobacco abuse (self-reported); overweight [body mass index >25 kg/m2]; DM [HbA1c >6.5%] and physical inactive [<150 min/week moderate or <75 min/week strenuous activity]) was categorized by the median sum of uncontrolled risk factors in our population (0–2 vs. 3–6). We calculated odds ratios (OR) for the association of age, sex, education and marital status with accumulation of risk factors by multivariable logistic regression. P-values <0.05 were considered statistically significant. Analyses were performed with IBM SPSS Statistics 23 (IBM® SPSS® Statistics Version 23).
Characteristics of the study participants and prevalence of CV risk factors
Characteristics of the study population and prevalence of CV risk factors by sex are displayed in Table 1. Mean age was 53.1 years (SD 11.9), 52.9% were females. As compared to women, men reported a longer duration of education and a higher household income per month. More men than women were married (p <0.001), whereas more women than men were divorced ore widowed (both p <0.001).
Of all participants, 19.3% reported current smoking (Table 1), with a significant preponderance in men. Overweight and high BP were significantly more present in men compared to women, as were LDL cholesterol levels. Prevalence of self-reported hypertension, hyperlipidemia and diabetes was independent from sex.
Achievement of recommended treatment goals and its determinants
CV pharmacotherapy was reported in 422 individuals (30.7%), with no difference between women and men, but a significant greater proportion observed at higher age (p <0.001).
In the total sample 433 participants (31.8%) had BP levels above the recommended target of 140/90 mmHg (Table 1). More men were detected with higher BP levels as compared to women (39.6% vs. 24.7%, respectively; p <0.001). Amongst subjects with raised BP levels, 156 (36.0%) had not been diagnosed by previous visits to a physician (women: 26.6% vs. men: 42.6%, p = 0.001). Amongst 372 (27.0%) subjects receiving antihypertensive medication, 193 (52.7%) did not achieve recommended BP targets (men 48.7% vs. women 57.2%, p = 0.12).
At the study visit, 46 subjects (3.5%) had an HbA1c value >6.5%, with no sex-specific differences (p = 0.50), while 13 (28.3%) were diagnostically naïve. Of the 56 (4.1%) participants receiving antidiabetic medication, 22 (44.0%) did not reach the recommended target (HbA1c <7.0%). Of 38 (67.9%) diabetic participants treated for hypertension, 16 (44.4%) subjects with DM type 2 were above the recommended BP of 140/85 mmHg, and 2 subjects (5.6%) >130/80 mmHg for DM type 1. Of subjects treated for hyperlipidemia, 4 (21.1%) had LDL cholesterol levels >100 mg/dl, with no differences beteen sexes.
More than a half of the participants (57.6%) had LDL cholesterol levels equal or above the target of 115 mg/dl (men 62.8% vs. women 52.9%, p <0.001). Amongst those, 408 subjects (54.2%) were unaware of this constellation; 112 participants took lipid-lowering medication, with 38 individuals (37.3%) above the recommended target despite medication.
We found the highest proportion of unreported risk factors at the age of 30–39 years for high BP levels (76.5%) and high LDL cholesterol (78.0%), and at the age of 60–69 years for HbA1c >6.5% (43.5%).
Determinants of accumulation of uncontrolled risk factors
In the total sample, the median number of uncontrolled risk factors was 2 (range 0–6; quartiles 1, 3). Only a small proportion, i.e. 11.4%, was lacked any risk factor. In the multivariable model, probability for having three or more uncontrolled risk factors was associated with male sex (OR 1.94, 95%CI 1.44–2.61), lower level of education (OR for primary vs. tertiary: 2.15, 95%CI 1.48–3.11) and higher age (OR for 30–39 years vs. 70–79 years: 4.01, 95%CI 1.94–8.31; Table 2). In a sensitivity analysis, no major differences became apparent between men and women regarding the predictors of 3 or more uncontrolled risk factors [for details refer to Additional file 2].
10-year risk estimation for fatal CVD by SCORE
For this analysis subjects with DM, CVD, and those younger than 40 years or older than 69 years were excluded (Fig. 1). Hence, SCORE values could be calculated in 980 subjects. Median SCORE was 1.0 (quartiles 1, 2), and subjects were categorized into low, medium, high to very high risk categories in 56.6%, 35.8%, and 7.5%, respectively (Table 3).
Participants at high risk were more likely to be male (p <0.001) and of older age (p <0.001). Reflecting the risk factors included in the SCORE calculation, those with higher risk more frequently exhibited hypertension and high LDL cholesterol levels (all i <0.001). Lifestyles habits (overweight and smoking), educational level (p <0.001) and net income per month (p = 0.02) were also associated with SCORE categories. In participants receiving antihypertensive medication, the proportion not achieving the recommended BP target rose from 16.2% in the low risk group to 74.3% in the high risk group. In participants with elevated LDL cholesterol levels, risk factors were more frequently insufficiently controlled despite medication (low risk 60.0% vs. high risk 40.0%).
In this cross-sectional study from the general population without established CVD, prevalence of modifiable CV risk factors was high, and risk factors were frequently inadequately controlled (median = 2). A substantial number of individuals did not report any CV risk factor, and in a sizeable proportion of participants on guideline-recommended medication, treatment targets were not achieved. For example, over half of participants on antihypertensive medication had elevated BP levels at the interview. In about one third of participants on lipid lowering drugs, LDL cholesterol levels remained inappropriately high, and in more than 40% of patients on antidiabetic treatment DM was inadequately controlled. We also found a high proportion of adverse lifestyle factors such as insufficient physical activity or overweight and obesity. Individuals with a larger number of insufficiently controlled risk factors were more likely to be older and of male sex, and had spent less time in education.
We investigated the accumulation of cardiovascular risk factors and its determinants in a population-based sample in Germany. Previous European studies on this topic mainly recruited within the general practitioner setting or focused on individual risk factors and their control in population samples. Due to differences in study design and study population, various definitions of adequate risk factor control in national and international recommendation for cardiovascular prevention of CVD over time, and variations in study protocols, direct comparisons of our results with previous studies are limited. However, the prevalence figures of investigated cardiovascular risk factors are comparable with previous data from the population based studies in Germany [25,26,27,28,29].
Control of risk factors in German population-based samples
The longitudinal DEGS1 (German Health Interview and Examination Survey for Adults) and GNHIES98 (National Health Interview and Examination Surveys 1998) combined data of 2231 individuals, who were normotensive at baseline but developed hypertension in the course of 12 years of follow-up. This analysis also reported lower proportions of individuals receiving antihypertensive medication but not reaching treatment targets in women (41.0%) as compared to men (49.7%). However, in general, BP control in both genders was better than in our sample, and the occurrence of hypertension was related to higher age, BMI, and alcohol consumption . Another longitudinal German study, KORA (Cooperative Health Research in the Augsburg Region in South Germany), showed a similar prevalence of hypertension (49.2%) at baseline, but a much lower achievement of treatment targets in patients on antihypertensive pharmacotherapy (29.6% in men; 43.9% in women) . The highest prevalence of hypertension was found in CARLA (the Cardiovascular Disease, Living and Ageing in Halle Study in East Germany) with 66.7% in men and 76.9% in women, which might be due to an overall older study population (mean age in women: 50.0 years; mean age in men: 61.3 years) .
Within the KORA study, a similar self-reported low prevalence in diabetes of 5.6% compared to STAAB with 5.7% was found . KORA participants with DM type 2 diabetes showed comparable glycemic control with a trend for secular improvement from 60% in the year 2000 to 71% in the year 2014 , respectively (overall medication control in STAAB: 66%). With respect to the increased CV risk in diabetics , we assessed the control of other CV risk factors in this group: despite respective medication, we found elevated BP in 52.6% of diabetic STAAB participants and high LDL cholesterol levels in 21.1%, respectively. The DIAB-CORE study (The Diabetes Collaborative Research of Epidemiologic Studies), which assessed the prevalence and management of DM related to BP and lipid management, found higher values of uncontrolled or insufficiently treated hypertension (63.6%), and suboptimally controlled dyslipidemia in diabetic patients (42.5%) . A longitudinal study of the DIAB-CORE Consortium in 2015 shows still a large proportion of insufficient hypertension control in diabetics (55.0%) .
The prevalence of dyslipidemia (total cholesterol ≥190 mg/dl or medical diagnosis of dyslipidemia) in DEGS1 was 65.1% (women 65.7%; men 64.5%), but more than half of the affected in both genders were unreported. In individuals with known dyslipidemia, only 30.8% were on lipid-lowering medication . In our study, prevalence of dyslipidemia (LDL cholesterol >115 mg/dl) was slightly lower (57.6%), and fewer subjects received insufficient pharmacotherapy (37.3%). This might be due to differing definitions of dyslipidemia, or the result of increased efforts regarding CV risk factor control in Germany.
Overweight was prevalent in more than half of the study population, which is in line with DEGS1 Data reporting a BMI ≥25 kg/m2 in 53.0% of women and 67.1% of men . Higher values were found in physically inactive participants (defined as <2.5 h/week of moderate intensity), which was reported more frequently in women (84.5%) than in men (74.6%) . We further found a substantially lower prevalence of current smokers compared to other surveys performed in Germany in 2010 [38, 39]. Concordantly, the SHIP study (Study of Health in Pomerania)  investigating long-term trends in lifestyle-related risk factors reported decreasing prevalence rates for tobacco smoking, overweight, and physical inactivity  over time. However, despite promising signals, control of modifiable vascular risk factors in German remains high calling for concerted actions of better guideline implementation in primary prevention.
Determinants of cadiovasular risk factor control
In our study, accumulation of insufficiently controlled CV risk factors (i.e., three or more) was associated with male sex, higher age and lower level of education. Two settings became apparent: On the one hand side, there was a fairly large proportion of individuals unaware of or not reporting their risk factors in a structured, physician-led interview. Thus, one strategy for achieving better implementation of guidelines could be a more comprehensive screening for CV risk factors in the general population. On the other hand side, we observed a high prevalence of individuals on pharmacotherapy for a CV risk factor ot achieving recommended treatment goals. As a consequence, education of physicians treating towards targets remains tiring but ever so important effort.
There might be a difference in BP assessed by mercury manometers in primary care practices compared to oscillometric techniques used in our study, which could have resulted in lower mean values for systolic and diastolic BP . This would be in line with findings from the HYDRA study (Hypertension and Diabetes Risk Screening and Awareness Study), which reported on an insufficient BP control that seemed to be unnoticed by the treating physicians . Another issue might be the mismatch of insufficient knowledge and compliance from patients´ side and the lack of time for a comprehensive evaluation of all guidelines applying for an individual patient combined with explanations and close guidance from physicians´ side [42, 43].
The LifeLines cohort study  from the Netherlands focused on the use of lipid-lowering drugs in 70,292 participants (mean age 45 years; n = 68,954 without CVD and stroke) based on adherence to the national guidelines for CVD prevention . This study found inadequate control in 77% of the 3268 individuals eligible for lipid-lowering medication. In the entire cohort, prevalence of hypertension (19.0%) and DM (1.7%) was comparatively low, while 22% were current smokers . Another study from the Netherlands (n = 1,203,290) revealed a rising number of individuals on CV pharmacotherapy with increasing age . In our sample, we observed 422 (30.7%) participants receiving CV pharmacotherapy increasing from 3% in the age group 30–39 years up to 73.5% in the oldest age group 70–79 years. Interestingly, highest frequencies for of unreported high BP (76.5%) and high LDL cholesterol (78.0%) were found at the age group 30–39 years, and for HbA1c >6.5% (43.5%) at the age group 60–69 years. Of those at high CVD risk, 36 (48.6%) had unreported LDL cholesterol levels ≥100 mg/dl. The importance of this finding is illustrated by a recent study determining the characteristics of culprit plaque in young patients who experienced an acute coronary syndrome. There, patients aged <35 years showed a significant higher risk of plaque rupture .
Risk factor control in primary care settings across Europe
Large patient cohort studies from primary care settings like DETECT (Diabetes Cardiovascular Risk-Evaluation: Targets and Essential Data for Commitment of Treatment [n = 55,518; mean age 53.9 years, 59.3% women]), HYDRA (n = 45,125; mean age 52.4 years) or CoRiMa (The German Coronary Risk Management [n = 248,096, mean age 56.5 years, 53.0% women]) in Germany reported prevalences ranging from 33% to 55% for hypertension, 30% to 62% for hyperlipidemia, and 14 to 29% for diabetes [9,10,11, 14]. Due to different thresholds, the reported prevalence of CV risk factors in previous studies varied substantially: e.g., thresholds for HbA1c in DETECT were >6.1% and in CoRiMa ≥6.5%; hyperlipidemia in CoRiMa (prevalence 62.0%) was based on LDL-C depends on individual cardiovascular risk and the number of risk factors, whereas DETECT (prevalence 29.1%) used a threshold of LDL cholesterol >115 mg/dl. As expected, achievement of treatment goals heavily depends on these definitions and are therefore difficult to compare. Treatment goals were achieved in CoRiMa for LDL cholesterol in 29%, for BP in 28%, for HbA1c ≥6.5% and/or use of antidiabetic medication in 36%. HYDRA, by contrast reported a considerably lower proportion of adequate medication control in only 19% of hypertensive patients taking into account that blood pressure was not standardized an measured in routine care, which may lead into an overestimation of hypertension (white-coat hypertension) .
The EURIKA study  (European Study on CVD Risk Prevention and Management in Daily Practice [conducted in 12 European countries]) and EUROASPIRE IV  (European Action on Secondary and Primary Prevention by Intervention to Reduce Events [conducted in 14 European countries]) reported on inadequate medication control in 59% to 61% of hypertensives, 27% to 67% of patients with dyslipidemia, and in 41% (EUROASPIRE, HbA1c <7%) to 63% (EURIKA, HbA1c ≥6.5%) of diabetics across Europe. An observational study of 8928 patients from 320 general practices over 10 European countries assessed predictors for risk factor control in patients at high vascular risk. Predictors for poor risk factor control were female sex, living alone, and lower educational status .
Risk factor control by absolute risk for fatal CVD
Applying SCORE, 35.6% of the participants were at medium and 7.5% at high to very high risk for CV death within the upcoming 10 years, probably mainly due to the age distribution of our population. Vascular risk factor control was worst amongst participants at highest risk of subsequent CVD. There are a few further patient cohort studies available which calculated the cardiovascular disease risk via SCORE. The German EURIKA study assessed the 10-year risk of CVD death in 7641 outpatients free from CVD aged ≥50 years (low vs. high CVD risk) and found a quite higher percentage of individuals at high risk (40.1%). With 22%, also higher proportions for participants at high risk was reported for the CoRiMa study compared to STAAB. In the EURIKA study about one-third of participants on pharmacotherapy was still at high CV risk [11, 15, 42], implying insufficient risk factor control. A Belgian survey conducted in primary care (n = 11,069) detected 38.0% individuals at high and 26.6% at very high risk .
The comparatively low number of individuals at high to very high risk in our population-based study (7.5%) indicates that the prevalence of subjects at high risk for CV death might be overestimated in studies including primary care patients because of different risk profiles such as a higher comorbidity burden in a sicker and older population. Further, CV risk factor detection might be much higher when there is a clinical suspicion of risk.
Owing to the study design and recruitment methodology, several limitations apply. We cannot exclude effects of selection bias, as only 32.6% of the invited population participated in the study. More healthy subjects might have had a higher motivation to participate in the STAAB program. Findings from our local Würzburg population may not be generalizable to other regions in Germany due to regional differences in age structure, risk factor profile, or lifestyle factor distribution. Due to the limited availability of original data from other studies, we were unable to provide direct age-standardized comparisons. We further did not assess, whether respective lifestyle advice had been given by the participants´ healthcare provider. Moreover we have no information about potential inflammation markers. Despite standardized measurements, single-occasion measurements (e.g., BP levels) may have led to amplified associations. Furthermore, the predictive model only accounted for measured factors leaving room for residual confounding.
Our results derived from a German population-based sample indicate that there is considerable potential to improve adherence to CV prevention guidelines, particularly in the management of hypertension, DM, overweight, physical activity, and smoking. Considering the high values of unreported high BP and LDL cholesterol levels in younger age groups (30–39 years), a target for better guideline implementation might be a more comprehensive screening for vascular risk factors particularly in younger age groups of the general population. The association of age, male sex and educational level with a greater number of uncontrolled risk factors suggests that prevention strategies should also focus on individual patient needs considering specific explanations and close guidance from the physician’s side, in particular for specific subgroups such as people with lower educational level.
Body mass index
Cardiovascular Disease, Living and Ageing in Halle Study in East Germany
Comprehensive Heart Failure Center
The German Coronary Risk Management
Cardiovascular risk factor
German Health Interview and Examination Survey for Adults
Diabetes Cardiovascular Risk-Evaluation: Targets and Essential Data for Commitment of Treatment
The Diabetes Collaborative Research of Epidemiologic Studies
European Study on CVD Risk Prevention and Management in Daily Practice
European Action on Secondary and Primary Prevention by Intervention to Reduce Events
National Health Interview and Examination Surveys 1998
Hypertension and Diabetes Risk Screening and Awareness Study
Institute of Clinical Epidemiology and Biometry
Cooperative Health Research in the Augsburg Region in South Germany
- LDL cholesterol:
Low density liproprotein
Systematic Coronary Risk Evaluation
Characteristics and Course of Heart Failure Stages A-B and Determinants of Progression
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We greatly appreciate the time of all STAAB participants and their willingness to provide data to the study. We also thank the Mayor of the City of Würzburg and the local registration office for their kind and sustained support of our study. Finally, we thank the entire study team including M. Breunig, K. Haas, M. Oezkur, M. Reuter, J. Kircher, study nurses, technicians, data managers, and students for their efforts on the STAAB study. We also thank Rudy Meijer from Meijer Medical Ultrasound, Vorschooten, The Netherlands, for external training and certification in vessel ultrasound as well as M. Ertl, G. Fette, F. Puppe from the CHFC DataWarehouse, Institute of Informatics VI, University of Würzburg. Parts of the results have been presented at the 11th annual meeting of the German Society of Epidemiology (2016). The content of this publication is within responsibility of the author.
TT has contributed to conception and design, acquisition, analysis, interpretation and drafted the manuscript. MW has contributed to conception, acquisition and interpretation. VR has constributed to analysis. CM has contributed acquisition and interpretation. GG has constributed to conception, analysis and interpretation. SS has contributed to conception and design, acquisition, interpretation and drafted the manuscript. PUH has contributed to conception and design, acquisition, analysis, interpretation and drafted the manuscript. All authors critically revised the manuscript and approved the final manuscript.
The study is supported by the German Ministry of Research and Education within the Comprehensive Heart Failure Centre Würzburg (BMBF 01EO1004 and 01EO1504). This publication was funded by the German Research Foundation (DFG) and the University of Würzburg in the funding programme Open Access Publishing.
Availability of data and materials
All data necessary for interpreting the study results and supporting its conclusions are included in the present publication. Individual patient data are available upon request from STAAB principal investigators (SS, PUH) in accordance to local data security restrictions and ethics recommendations.
Ethics approval and consent to participate
The STAAB cohort study protocol and procedures received positive votes from the Ethics Committee of the Medical Faculty (vote 98/13) as well as from the data protection officer of the University of Würzburg (J-117.605-09/13). All participants provide written informed consent prior to any study examination.
Consent for publication
GG reports grants from University Göttingen within the FIND-AF-randomized trial (FIND-AF-randomized is supported by an unrestricted grant to the University Göttingen from Boehringer-Ingelheim), grants from University Göttingen within DZHK analysis projects (the DZHK is funded by a BMBF grant), personal fees from Charité - Universitätsmedizin Berlin within the TIM-HF-II trial for data safety and monitoring board membership (TIM-HF-II is supported by a BMBF grant to the Charité), grants from University Hospital Würzburg within the MOOD-HF trial for biometry and steering committee membership (MOOD-HF is supported by a BMBF grant and an unrestricted grant to the University Hospital Würzburg from Lundbeck), outside the submitted work.
SS reports research grants from the German Ministry of Education and Research, European Union, University Hospital Würzburg; participation in Data Safety Monitoring and Event Adjudication Boards in trials sponsored by ROCHE and MEDTRONIC; principal investigator in trials (co-)sponsored by BOEHRINGER, NOVARTIS, BAYER, LUNDBECK; speaker honaria by BOEHRINGER, SERVIER, NOVARTIS, ASTRA-ZENECA, PFIZER, BAYER.
PUH reports research grants from the German Ministry of Research and Education, European Union, Charité, Berlin Chamber of Physicians, German Parkinson Society, University Hospital Würzburg, Robert-Koch-Institute, German Heart Foundation, Charité–Universitätsmedizin Berlin (within MonDAFIS; MonDAFIS is supported by an unrestricted research grant to the Charité from Bayer), University Göttingen (within FIND-AF-randomized; FIND-AF randomized is supported by an unrestricted research grant to the University Göttingen from Boehringer-Ingelheim), and University Hospital Heidelberg (within RASUNOA-prime; RASUNOA-prime is supported by an unrestricted research grant to the University Hospital Heidelberg from Bayer, BMS, Boehringer-Ingelheim, Daiichi Sankyo), outside submitted work.
All other authors have nothing to disclose.
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Table S1. Definition of uncontrolled cardiovascular risk factors. Definition of the six uncontrolled cardiovascular risk factors (blood pressure, glycemic control, LDL cholesterol, tabaco abuse, physically inactive, overweight) and their subgroups (PDF 337kb)
Table S2. Sensitivity analysis according to sex. Odds ratios (OR) (95%-CI) for 3–6 (referent: 0–2) insufficiently controlled cardiovascular risk factors adjusted for sociodemographic status stratified by sex (PDF 343 kb)
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Tiffe, T., Wagner, M., Rücker, V. et al. Control of cardiovascular risk factors and its determinants in the general population– findings from the STAAB cohort study. BMC Cardiovasc Disord 17, 276 (2017). https://doi.org/10.1186/s12872-017-0708-x