Table 1 Basic characteristics of study population
Variables | Characteristics |
|---|---|
Overall | 184,047 |
Sex, Male (%) | 88,080 (47.86) |
Age, years (mean (SD)) | 69.75 (7.85) |
Age group (%) | |
 60–74 | 139,672 (75.89) |
 Over 75 | 44,375 (24.11) |
Rural (%) | 88,339 (48.00) |
Education (%) | |
 Illiteracy and primary school | 129,222 (70.21) |
 High school and above | 54,249 (29.48) |
 Missing values | 576 (0.31) |
Spouse (%) | |
 Single | 50,404 (27.39) |
 Married | 130,901 (71.12) |
 Missing values | 2742 (1.49) |
Exercise (%) | |
 Never | 90,258 (49.04) |
 1–5 times per week | 52,563 (28.56) |
  > 6 times per week | 40,252 (21.87) |
 Missing values | 974 (0.53) |
Annual family income, RMB (mean (SD)) | 36,640.44 (40,832.10) |
Annual family income, tertiles (RMB, %) | |
 T1 < 15,000 | 64,953 (35.29) |
 T2 15,000–40,000 | 58,622 (31.85) |
 T3 > 40,000 | 57,726 (31.36) |
 Missing values | 2746 (1.49) |
Climate areas (%) | |
 Cold | 46,516 (25.27) |
 Moderate cold | 45,622 (24.79) |
 Moderate hot | 47,043 (25.56) |
 Hot | 44,866 (24.38) |
Cataract (%) | 29,465 (16.01) |
Hypertension (%) | 68,412 (37.17) |
Diabetes (%) | 16,297 (8.85) |
Cardio-cerebrovascular diseases (%) | 49,072 (26.66) |
Stomach diseases (%) | 32,744 (17.79) |
Arthritis (%) | 80,002 (43.47) |
Chronic lung diseases (%) | 18,748 (10.19) |
Asthma (%) | 8288 (4.50) |
Cancer (%) | 2127 (1.16) |
Reproductive diseases (%) | 5165 (2.81) |