Table 1.
Baseline characteristics of participants in the Mid-South Coronary Heart Disease Study.*
| Characteristic | All (N=2587) | Men (N=1768) | Women (N=819) | p- value1 |
|---|---|---|---|---|
| Age (years) | 69 (61, 76) | 69 (62, 76) | 69 (61, 76) | 0.61 |
| Race | <0.001 | |||
| White | 2250 (88%) | 1575 (90%) | 675 (84%) | |
| Non-White | 297 (12%) | 166 (10%) | 131 (16%) | |
| Perceived health competence scale-22 | 8 (6, 10) | 8 (6, 10) | 8 (6, 10) | <0.001 |
| Depression3 | 2 (1, 3) | 2 (1, 2) | 2 (1, 3) | <0.001 |
| Living with spouse | 1832 (71%) | 1413 (80%) | 419 (51%) | <0.001 |
| Social support4 | 4 (3, 5) | 4 (3, 5) | 4 (3, 5) | 0.40 |
| Quality of life4 | 3 (3, 4) | 4 (3, 4) | 3 (3, 4) | <0.001 |
| Pain4 | 2 (1, 3) | 2 (1, 3) | 2 (2, 4) | <0.001 |
| Sleep4 | 4 (3, 5) | 4 (3, 5) | 4 (2, 5) | <0.001 |
| Brief Health Literacy Scale5 | 14 (11, 15) | 14 (11, 15) | 14 (11, 15) | 0.015 |
| Subjective Numeracy Scale6 | 5 (4, 6) | 5 (4, 6) | 5 (3, 5) | <0.001 |
| Education7 | 4 (3, 5) | 4 (3, 5) | 4 (3, 4) | <0.001 |
| Income8 | 4 (3, 6) | 5 (3, 6) | 3 (2, 5) | <0.001 |
| Left ventricular ejection fraction <50% | 181 (7%) | 136 (8%) | 45 (6%) | 0.041 |
| Body mass index (kg/m2) | 30 (26, 34) | 29 (26, 33) | 30 (26, 35) | 0.64 |
| Chronic obstructive pulmonary disease | 123 (5%) | 63 (4%) | 60 (7%) | <0.001 |
| Current smoker | 207 (8%) | 135 (8%) | 72 (9%) | 0.31 |
| Diabetes mellitus | 979 (38%) | 656 (37%) | 323 (39%) | 0.26 |
| End-stage renal disease | 42 (2%) | 30 (2%) | 12 (2%) | 0.67 |
| Peripheral vascular disease | 173 (7%) | 123 (7%) | 50 (6%) | 0.42 |
| Systolic blood pressure (mm Hg) | 126 (119, 135) | 126 (119, 135) | 127 (120, 137) | 0.087 |
| Stroke or transient ischemic attack | 92 (4%) | 67 (4%) | 25 (3%) | 0.35 |
| Beta blocker | 1983 (77%) | 1355 (77%) | 628 (77%) | 0.98 |
| Calcium channel blocker | 1095 (42%) | 697 (39%) | 398 (49%) | <0.001 |
All values displayed as medians (25 %, 75 %) or numbers (percentages).
The Wilcoxon test was used for continuous variables; the Pearson test for categorical variables.
Perceived health competence scale-2 is a score from 2–10 (10 is highest).
Score from 1–5 (5 is the lowest level of depression).
Score from 1–5 (1 is poor, 5 is excellent).
Score from 1–15 (15 is highest).
Score from 1–6 (6 is highest).
Education was defined as a 6-level ordinal variable: (1 = 8th grade or less; 2 = some high school; 3 = high school graduate or General Equivalency Diploma; 4 = some college; 5 = college graduate; 6 = more than college degree)
Income was defined as a 7-level ordinal variable (1 = less than $10,000; 2 = $10,000 to $19,999; 3 = $20,000 to $34,999; 4 = $35,000 to $49,999; 5 = $50,000 to $74,999; 6 = $75,000 to $99,999; 7 = $100,000 or more).