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Table 1 Study and Population Characteristics

From: Self-management of heart failure in dementia and cognitive impairment: a systematic review

Author

Country

Aim

Study Duration (months)

Data Type

Study Design

Method(s) of data collection

Setting

Population setting

Population size (n)

Age mean and range

Female (n and/or %)

HF severity (n and/or %)

Cognitive impairment test(s) and cutoff scores

Cognitive Impairment (n and/or %)

Comorbidities (n and/or %)*

Quality Assessment

Alosco, 2012

USA

To examine whether cognitive functioning is associated with poorer Adh to treatment recommendations

–

Cross Sectional

Obs

Ques, Exam

Primary Care/Cardiology Practice

Urban

149

68.1 (SD = 10.7)

37%

NYHA II/III

LVEF: 41.0 (SD = 14.8)

–

–

Diabetes: 34%

Depression: 22%

Hypertension: 72%

Myocardial Infarct: 52%

Fair

Alosco, 2012

USA

To examine whether cognitive functioning is able to predict ADL performance

–

Cross Sectional

Obs

Ques, Exam

Primary Care/Cardiology Practice

Urban

122

68.5 (SD = 9.4)

35%

NYHA II/III

MMSE

–

Diabetes: 33%

Hypertension: 66%

Myocardial Infarct: 54%

Fair

Alosco, 2014

USA

To examine the association between EF and IADL in HF patients & to examine the association between executive dysfunction and unhealthy lifestyle behaviors.

–

Cross Sectional

Obs

Ques, Exam

–

Urban

179

68.1 (SD = 10.3)

36%

NYHA II/III/IV

LVEF: 41.0 (SD = 15.1)

–

–

Diabetes: 37%

Hypertension: 70%

Fair

Cameron, 2009

AUS

To test a conceptual model of factors drawn from the literature as determinants of chronic HF SC

–

Cross Sectional

Obs

Int

Inpatient

Urban

50

73 (SD = 11)

12 (24%)

NYHA III/IV: 25 (50%)

MMSE (< 27)

18 (36%)

Mild/Moderate:

32 (64%)

Severe: 18 (36%)

Good

Dickson, 2008

USA

To explore how attitudes, self-efficacy and cognition influence the decision making processes underlying HF SC.

–

Cross Sectional

Obs

Int

Outpatient

Urban

41

49.2 (SD = 10.5) Range: 25–65

15 (37%)

NYHA II/III

Mean ejection fraction:

34%

–

–

Mild: 17 (41%)

Moderate: 20 (49%)

Severe: 4 (10%)

Fair

Habota, 2015

AUS

To compare prospective memory ability of CHF patients and matched controls

3

Cross Sectional

Obs

Int

Outpatient

Urban

30

70.0 (SD = 11.9) Range: 40–86

37%

NYHA III/IV: (30%)

ACE-R

–

Diabetes: 5 (17%)

Hypertension: 20 (67%)

Fair

Harkness, 2014

CAN

To determine if MCI was significantly associated with SC management in a community dwelling sample of older HF patients

–

Cross Sectional

Obs

Ques, Exam

Outpatient

Urban

100

72.4 (SD = 9.8)

32%

NYHA III: 43 (43%)

LVEF≤45: 90%

MoCA (< 26, < 24 – CVS cutoff)

< 26: 73%

< 24: 56%

AF: 54 (54%)

Diabetes: 43 (43%)

Depression: 12 (12%)

Hypertension: 73 (73%)

Good

Hawkins, 2012

USA

To describe the prevalence and severity of CI in an OP veteran population with HF and to describe the cognitive domains affected. To examine the clinical and demographic variables associated with CI and to determine the relationship between CI and MA

–

Prospective

Coh

Int, Exam

Outpatient/General Medical Clinic

Urban

251

66 (SD = 9.8) Range: 33–93

4 (1.6%)

LVEF: 37.5 (SD = 16.9)

SLUMS (< 27 with HSQ, < 25 with-out)

144 (58%)‡

AF: 82 (32.7%)

Diabetes: 134 (53.4%)

Depression: 76 (30.3%)‡

Hypertension: 193 (76.9%)

Good

Hjelm, 2015

SWE

To a) test the association between cognitive function and SC in HF patients, b) explore which cognitive areas were affected, c) determine if DP moderated the association between cognitive function and SC.

–

Cross Sectional

Obs

Ques, Exam

Outpatient

Urban

142

Median: 72, Range: 65–79

45 (32%)

NYHA III/IV: 55 (39%)

LVEF< 40:

102 (72%)

MMSE

–

Mild: 116 (82%)

Moderate: 22 (15%)

Severe: 3 (2%)

Good

Karlsson, 2005

SWE

To assess the effect of a nurse based management program to increase HF patients’ knowledge about disease and SC. To compare these results to gender and cognitive function

6

Prospective

RCT

Ques, Int

Outpatient

Urban

Interv: 72

Control: 74

76, SD = 8 vs. 76 SD = 7§

31 (43%) vs. 33 (45%)§

NYHA III/IV: 31 (43%) vs. 22 (30%)§

LVEF: 33 (SD = 12) vs. 35 (SD = 10)§

MMSE

–

Diabetes: 17 (24%) vs. 15 (20%)§

Hypertension: 30 (42%) vs. 21 (28%)§||

Fair

Kim, 2015

KOR

To examine a) global cognition, M and EF, b) differences in these domains when comparing asymptomatic and symptomatic HF c) the association between cognitive function and SC Adh in HF patients d) the influence of the cognitive domains on MACE

24

Prospective

Coh

Int

Outpatient

Urban

86

58.3 (SD = 12.9)

28 (34%)

NYHA III/IV: 8 (9%)

LVEF: 51 (SD = 15)

K-MMSE (< 23.5)

28 (33%)

AF: 15 (17%)

Diabetes: 13 (15%)

Fair

Lee, 2013

USA

To quantify the relationship between MCI and, SC and consulting behaviours

–

Cross Sectional

Obs

Ques, Exam

Outpatient

Urban

148

56.9 (SD = 12.4)

57 (39%)

NYHA III/IV: 87 (59%)

LVEF: 28 (SD = 12)

MoCA (< 26, < 24 – CVS cutoff)

< 26: 49 (33%)

< 24: 21 (14%)

Mild: 95 (64%)

Moderate: 44 (30%)

Severe: 9 (6%)

Good

Smeulders, 2010

NED

To identify the characteristics of CHF patients that benefitted most from the CDSMP

27

Prospective

RCT

Ques, Int (T)

Outpatient

Urban

Interv: 186

Control: 131

66.7 (SD = 10.6),

66.6 (SD = 11.0) vs.

66.8 (SD = 10.1)§

45 (24.2%) vs. 42 (32.1%)§

NYHA III: 66 (36%) vs. 40 (31%)§

TICS (< 33.0)

99 (53.2%) vs. 78 (59.5%)§

–

Fair

Vellone, 2015

ITA

To determine whether SC confidence mediates the relationship between cognition and SC behaviours

–

Cross Sectional

Obs

Int

Outpatient

Urban

628

73.0 (SD = 11.3)

266 (42.6%)

NYHA III/IV: 340 (54.1%)

LVEF: 43.1 (SD = 11.6)

MMSE

–

–

Fair

  1. * Classified as mild, moderate, severe as in Additional file 1. If the measures were not available, prevalence of atrial fibrillation, diabetes, depression, hypertension and myocardial infarction were reported where available
  2. ‡ Denominator is 250
  3. § Intervention vs. Control
  4. || p < 0.05
  5. Country: AUS = Australia, CAN=Canada, ITA = Italy, KOR = South Korea, NED = Netherlands, SWE = Sweden, USA = United States of America
  6. Study design: Obs = Observational, Coh = Cohort, RCT = Randomized Controlled Trial
  7. Method of data collection: Exam = Examination, Int = Interview (T = Telephone), Ques = Questionnaire,
  8. Population size: Interv = Intervention
  9. Heart failure severity: LVEF = Left ventricular ejection fraction, NYHA = New York Heart Association,
  10. Cognitive tests: 5WIDM = 5 Word Immediate and Delated Memory Test, ACE-R = Addenbrooke’s Cognitive Examination, CVS=Cardiovascular, HSQ = High school qualification, K-MMSE = Korean Mini Mental State Exam, MMSE = Mini Mental State Exam, MoCA = Montreal Cognitive Assessment, SLUMS=St Louis University Mental Status, TICS = Telephone Interview for Cognitive Status
  11. Comorbidities: AF = Atrial fibrillation
  12. Other: Adh = self-reported adherence, ADL = Activities of daily living, CDSMP=Chronic Disease Self-Management Programme, CHF=Congestive heart failure, CI=Cognitive impairment, DP = Depression, EF = Executive function, HF=Heart failure, IADL = Instrumental activities of daily living, MA = Medication adherence, MCI = Mild cognitive impairment, MACE = Major adverse cardiac events, OP=Outpatient, SC=Self-care