Table 2 Baseline characteristics of study participants; cases, controls, and combined sample
From: The blood microbiome and its association to cardiovascular disease mortality: case-cohort study
Variable | Cases n = 227 | Controls n = 178 | Combined sample n = 405 | t-test/Fisher test p-value (2-sided) |
|---|---|---|---|---|
Age at entry, mean (SD) years | 71.3 (2.0) | 71.2 (2.7) | 71.3 (2.4) | 0.755 |
Age at exit, mean (SD) years | 76.9 (3.5) | 80.2 (3.2) | 78.4 (3.7) | 0.568 |
Diabetes, yes | 38 (17.3%) | 12 (6.8%) | 50 (12.6%) | 0.002 |
Use antihypertensive medication, yes | 117 (53.2%) | 42 (25.0%) | 159 (41.0%) | < 0.001 |
History of myocardial infarction, yes | 66 (29.7%) | 18 (10.1%) | 84 (21.0%) | < 0.001 |
History of heart failure, yes | 20 (9.1%) | 8 (4.7%) | 28 (7.2%) | 0.114 |
Systolic blood pressure, mean (SD) mmHg | 151.0 (22.2) | 145.0 (20.5) | 148.4 (21.7) | 0.253 |
Subjective health, bad | 13 (5.8%) | 5 (2.8%) | 18 (4.5%) | 0.224 |
Physical activity, no hard activity | 125 (58.7%) | 70 (43.5%) | 195 (52.1%) | 0.002 |
Excessive coffee consumption, > 3 cups per day | 91 (40.4%) | 54 (31.2%) | 145 (36.4%) | 0.047 |