Table 1.
Characteristics of Chinese adults aged 18–65 years by survey year and urban and rural areas in 1993–2011
| Survey year | |||||||
|---|---|---|---|---|---|---|---|
| 1993 | 1997 | 2000 | 2004 | 2006 | 2009 | 2011 | |
| All participants | 6782 | 7288 | 8227 | 7243 | 7236 | 6668 | 10,192 |
| Males n (%) | 3235 (47.7) | 3561 (48.9) | 3936 (47.8) | 3466 (47.9) | 3418 (47.2) | 3173 (47.6) | 4777 (46.9) |
| Age (year) | 38.8 (12.87) | 39.8 (12.68) | 41.3 (12.37) | 43.7 (12.01) | 44.7 (11.80) | 45.6 (12.08) | 46.5 (11.99) |
| BMI (kg/m2) | 21.9 (2.81) | 22.3 (3.04) | 22.8 (3.16) | 23.1 (3.28) | 23.3 (3.50) | 23.4 (3.40) | 24 (4.18) |
| WC (cm) | 75.6 (8.93) | 77.3 (9.22) | 79.1 (9.69) | 80.5 (9.74) | 81 (9.78) | 82.4 (10.25) | 83.7 (11.09) |
| SBP (mmHg) | 113.9 (16.30) | 116.8 (16.31) | 117.7 (16.35) | 119.9 (16.83) | 119.5 (16.35) | 121.9 (17.23) | 122.5 (16.53) |
| DBP (mmHg) | 75 (10.78) | 76.5 (10.60) | 77.1 (10.73) | 78.3 (11.01) | 78.5 (10.65) | 79.8 (10.91) | 79.2 (10.54) |
| Urban | 2047 | 2457 | 2717 | 2435 | 2367 | 2108 | 4085 |
| Males n (%) | 972 (47.5) | 1178 (47.9) | 1291 (47.5) | 1156 (47.5) | 1121 (47.4) | 995 (47.2) | 1907 (46.7) |
| Age (year) | 40 (13.10) ** | 40.1 (12.74) | 41.9 (12.46) * | 43.6 (12.36) | 44.9 (12.12) | 46 (12.25) | 46.5 (12.22) |
| BMI (kg/m2) | 22.3 (2.95) ** | 22.8 (3.21) ** | 23.1 (3.21) ** | 23.4 (3.35) ** | 23.4 (3.28) * | 23.5 (3.45) | 24.1 (4.13) |
| WC (cm) | 77.5 (9.80) ** | 78.4 (9.82) ** | 79.9 (10.15) * | 81.3 (10.01) * | 81.6 (9.73) ** | 82.6 (10.26) | 83.6 (10.94) |
| SBP (mmHg) | 115.3 (17.26) | 116.9 (16.91) | 118 (16.42) | 120.3 (16.95) | 119.8 (15.99) | 121.3 (16.68) | 122.1 (15.58) |
| DBP (mmHg) | 76.2 (11.36) * | 77 (10.76) ** | 77.4 (10.96) | 78.6 (10.68) | 78.9 (10.27) * | 79.9 (10.50) | 78.8 (9.54) ** |
| Rural | 4735 | 4831 | 5510 | 4808 | 4869 | 4560 | 6107 |
| Males n (%) | 2263 (47.8) | 2383 (49.3) | 2645 (48.0) | 2310 (48.0) | 2297 (47.2) | 2178 (47.8) | 2870 (47.0) |
| Age (year) | 38.3 (12.73) | 39.7 (12.65) | 41 (12.32) | 43.7 (11.83) | 44.7 (11.65) | 45.5 (11.99) | 46.4 (11.83) |
| BMI (kg/m2) | 21.7 (2.73) | 22.1 (2.92) | 22.7 (3.13) | 23 (3.23) | 23.2 (3.59) | 23.3 (3.37) | 24 (4.22) |
| WC (cm) | 74.8 (8.39) | 76.7 (8.85) | 78.8 (9.43) | 80.2 (9.58) | 80.7 (9.79) | 82.2 (10.25) | 83.7 (11.19) |
| SBP (mmHg) | 113.2 (15.82) | 116.7 (15.99) | 117.5 (16.31) | 119.6 (16.76) | 119.4 (16.53) | 122.2 (17.47) | 122.7 (17.13) |
| DBP (mmHg) | 74.5 (10.47) | 76.2 (10.52) | 76.9 (10.60) | 78.2 (11.17) | 78.2 (10.82) | 79.7 (11.10) | 79.5 (11.16) |
Values presented as numbers for arbitrary values and as the mean (SD) or n (%) for other variables
Student’s t-test was applied to test the difference between urban and rural areas, * significant at 0.05, ** significant at 0.01