Table 1.
Demographic data and secondary prevention of coronary heart disease in respondents and non-respondents. Values are numbers (percentages) of respondents unless stated otherwise
| Respondents (n=1343) | Non-respondents (n=578) | P value | |
|---|---|---|---|
| Sex (men) | 782 (58) | 314 (54) | 0.11 |
| Mean (SD) age (years) | 66.2 (8.2) | 66.6 (8.7) | 0.30 |
| Urban practice | 720 (54) | 331 (57) | 0.14 |
| Practice size: | |||
| <5000 | 190 (14) | 105 (18) | |
| 5-10 000 | 523 (39) | 238 (41) | 0.016 |
| >10 000 | 630 (47) | 235 (41) | |
| Previous myocardial infarction | 605 (45) | 269 (47) | 0.55 |
| Mean (SD) time since myocardial infarction (years) | 7.5 (6.3) | 7.4 (6.1) | 0.76 |
| Prescribed drugs: | |||
| Aspirin | 508 (38) | 189 (33) | 0.032 |
| β Blockers | 450 (34) | 148 (26) | 0.0006 |
| Angiotensin converting enzyme inhibitors | 123 (9) | 62 (11) | 0.28 |
| Cholesterol: | |||
| Checked within 3 years* | 340 (26) | 114 (20) | 0.008 |
| Mean (SD) total cholesterol (mmol/l) | 6.5 (1.2) | 6.5 (1.2) | 0.92 |
| Blood pressure: | |||
| Checked within 3 years† | 1207 (93) | 488 (88) | 0.0005 |
| Mean (SD) systolic pressure (mm Hg) | 142 (20) | 142 (21) | 0.60 |
| Mean (SD) diastolic pressure (mm Hg) | 81 (10) | 81 (10) | 0.45 |
*
Of 1322 respondents and 570 non-respondents managed in general practice.
†
Of 1298 respondents and 554 non-respondents managed in general practice.