Table 3 Demographic and clinical characteristics of the patients
|  | Intervention Group (n = 48) n (%) | Control Group (n = 55) n (%) | Chi-squared test | |
|---|---|---|---|---|
χ2 | P | |||
Sex | ||||
 Men | 30 (62.5) | 36 (65.5) | 0.100 | 0.755 |
 Women | 18 (37.5) | 19 (34.5) | ||
Age | ||||
  ≤ 60 years | 19 (39.6) | 17 (30.9) | 6.950 | 0.073 |
 61–65 years | 6 (12.5) | 18 (32.7) | ||
 66–70 years | 14 (10.7) | 9 (16.4) | ||
  ≥ 71 years | 9 (18.8) | 11 (20.0) | ||
Marital status | ||||
 Married | 45 (93.7) | 48 (87.3) | 1.230 | 0.268 |
 Widowed or others | 3 (6.3) | 7 (12.7) | ||
Education | ||||
 Primary school | 13 (27.1) | 14 (25.5) | 0.400 | 0.940 |
 Junior middle school | 13 (27.1) | 18 (32.7) | ||
 High school or Secondary specialized school | 15 (31.3) | 16 (29.1) | ||
 College and above | 7 (14.6) | 7 (12.7) | ||
Occupation | ||||
 Workers | 24 (50.0) | 31 (56.4) | 1.240 | 0.743 |
 Farmers | 14 (29.2) | 12 (21.8) | ||
 Cadres | 8 (16.7) | 8 (14.5) | ||
 Others | 2 (4.2) | 4 (7.3) | ||
Type of medical payment | ||||
 Public or medical insurance | 34 (70.8) | 41 (74.5) | 0.180 | 0.673 |
 Rural cooperative medical care | 14 (29.2) | 14 (25.5) | ||
Cardiac function | ||||
 I | 9 (18.8) | 9 (16.4) | 0.950 | 0.623 |
 II | 19 (39.6) | 27 (49.1) | ||
 III | 20 (41.7) | 19 (34.5) | ||
Percutaneous coronary intervention | ||||
 Yes | 24 (50.0) | 26 (47.3) | 0.080 | 0.782 |
 No | 24 (50.0) | 29 (52.7) | ||
Number of complications | ||||
 One | 18 (37.5) | 19 (34.5) | 0.100 | 0.952 |
 Two | 19 (39.6) | 23 (41.8) | ||
 Three | 11 (22.9) | 13 (23.6) | ||
Duration of disease (years) | ||||
 ≤ 3 | 18 (37.5) | 14 (25.5) | 1.740 | 0.419 |
 3–5 | 17 (35.4) | 23 (41.8) | ||
 ≥ 5 | 13 (27.1) | 18 (32.7) | ||