Table 1.
Baseline characteristics of the study sample
| Characteristics | Total | Men | Women |
|---|---|---|---|
| Number of patients followed up | |||
| Patients followed up for 2 years (n) | 2,128 | 993 | 1,135 |
| Number of patients lost to follow-up | 59 | 28 | 31 |
| Age (mean±SD, years) | 56±7.1 | 53±8.4 | 59±9.1 |
| Living situation (n, %) | |||
| Urban | 985 (46.3) | 417 (42.0) | 568 (50.0)* |
| Rural | 1,143 (53.7) | 576 (58.0) | 567 (50.0) |
| Ethnicity (n, %) | |||
| Han | 2,111 (99.2) | 983 (99.0) | 1,128 (99.4) |
| Other | 17 (0.8) | 10 (1.0) | 7 (0.6)** |
| Education (n, %) | |||
| Elementary school or lower | 1,110 (52.2) | 456 (45.9) | 654 (57.6)** |
| Intermediate school or higher | 1,018 (47.8) | 537 (54.1) | 481 (42.4)* |
| Diabetes (n, %) | 872 (40.9) | 363 (36.6) | 509 (44.8)** |
| Hypertension (n, %) | 631 (29.7) | 355 (35.7) | 276 (24.3)* |
| Smoking (n, %) | 586 (27.5) | 547 (55.0) | 39 (3.4)* |
| Type of surgery (n, %) | |||
| AVR only | 738 (34.7) | 357 (35.9) | 381 (33.6) |
| MVR only | 985 (46.3) | 437 (44.0) | 548 (48.3) |
| AVR and MVR | 405 (19.0) | 216 (21.8) | 189 (16.7)* |
Note: Compared with male,
*
P<0.05,
**
P<0.01.
Abbreviations: AVR, aortic valve replacement; MVR, Mitral valve replacement.