Table 1.
Epidemiological and Clinical Characteristics of the Study Subjects, Anqing 1994–1997
| Father (n = 611) | Mother (n = 668) | Siblings (n = 1630) | |
|---|---|---|---|
| Age | 47.5 (11.5) | 44.6 (11.6) | 21.5 (10.2) |
| BMI | 20.8 (2.2) | 21.1 (2.5) | 19.2 (3.3) |
| SBP | 121.4 (21.1) | 120.1 (21.0) | 107.4 (12.6) |
| DBP | 72.9 (11.9) | 70.8 (11.5) | 64.0 (9.3) |
| PR (s) | 0.14 (0.02) | 0.14 (0.02) | 0.13 (0.02) |
| QRS duration (s) | 0.09 (0.01) | 0.09 (0.01) | 0.09 (0.02) |
| QTc (s) | 0.39 (0.03) | 0.41 (0.03) | 0.41 (0.03) |
| HR (bpm) | 69.8 (11.1) | 76.3 (11.7) | 82.5 (14.9) |
| Sex | |||
| Male | 611 | 743 (45.6) | |
| Female | 668 | 887 (54.4) | |
| Smoking status | |||
| Never | 111 (18.2) | 643 (96.3) | 1360 (83.4) |
| Ever | 500 (81.8) | 25 (3.7) | 270 (16.6) |
| Alcohol drinking | |||
| Never | 394 (64.5) | 663 (99.3) | 1540 (94.5) |
| Ever | 217 (35.5) | 5 (0.7) | 90 (5.5) |
| Education | |||
| Elementary | 227 (37.2) | 530 (79.3) | 966 (59.6) |
| Junior and senior | 346 (56.7) | 133 (19.9) | 592 (36.5) |
| College | 37 (6.1) | 5 (0.8) | 63 (3.9) |
| Occupation | |||
| Farmer | 471 (77.1) | 491 (73.5) | 1211 (74.3) |
| Other | 140 (22.9) | 177 (26.5) | 419 (25.7) |
Continuous variables are expressed as mean ± SD, categorical variables are expressed as N (%). BMI = body mass index; DBP = diastolic blood pressure; HR = heart rate; QTc = corrected QT interval; SBP = systolic blood pressure.