表 1.
研究对象基本情况
Basic information of participants
| Subjects | Cross-sectional data of seven provinces (autonomous regions, municipalities) in China | Last follow-up data of Xiamen cohort | |||||
| Boys | Girls | P value | Boys | Girls | P value | ||
| BMI, body mass index; WC, waist circumference. | |||||||
| Sample size, n (%) | 21 094 (48.9) | 22 043 (51.1) | 613 (48.4) | 653 (51.6) | |||
| Age group, n (%) | < 0.001 | < 0.001 | |||||
| 6-12 years | 13 206 (62.6) | 12 710 (57.7) | 456 (74.4) | 651 (99.7) | |||
| 13-15 years | 5 093 (24.1) | 5 965 (27.1) | 157 (25.6) | 2 (0.3) | |||
| 16-18 years | 2 795 (13.3) | 3 368 (15.3) | |||||
| Residence area, n (%) | < 0.001 | ||||||
| Urban | 11 446 (54.3) | 12 935 (58.7) | 613 (48.4) | 653 (51.6) | |||
| Rural | 9 648 (45.7) | 9 108 (41.3) | |||||
| Simple obesity, n (%) | < 0.001 | 126 (20.5) | 27 (4.1) | < 0.001 | |||
| Yes | 16 064 (76.6) | 16 719 (76.3) | 487 (79.4) | 626 (95.9) | |||
| No | 3 370 (16.0) | 1 910 (8.7) | |||||
| Central obesity, n (%) | 0.369 | < 0.001 | |||||
| Yes | 17 971 (85.3) | 20 210 (91.8) | 173 (28.2) | 54 (8.3) | |||
| No | 4 896 (23.4) | 5 201 (23.7) | 440 (71.8) | 599 (91.7) | |||
| Compound obesity, n (%) | < 0.001 | < 0.001 | |||||
| Yes | 0 (0) | 10 908 (49.5) | 120 (19.6) | 26 (4.0) | |||
| No | 3 094 (14.7) | 1 816 (8.2) | 493 (80.4) | 627 (96.0) | |||
| Puberty onset, n (%) | < 0.001 | 0.011 | |||||
| Yes | 5 605 (26.6) | 10 908 (49.5) | 531 (86.6) | 595 (91.1) | |||
| No | 15 489 (73.4) | 11 135 (50.5) | 82 (13.4) | 58 (8.9) | |||
| Breast-feeding, n (%) | 0.016 | 0.470 | |||||
| Yes | 5 241 (32.9) | 5 247 (31.6) | 189 (34.9) | 75 (32.2) | |||
| No | 0 (0) | 0 (0) | 353 (65.1) | 158 (67.8) | |||
| BMI, x±s | 19.29±4.10 | 18.63±3.62 | < 0.001 | 20.44±3.78 | 16.91±2.64 | < 0.001 | |
| WC, x±s | 67.56±11.70 | 65.12±9.64 | < 0.001 | 70.11±10.71 | 58.91±6.78 | < 0.001 | |
| BMI-Z, x±s | 0.42±1.42 | 0.00±1.14 | < 0.001 | 0.79±1.33 | -0.44±1.18 | < 0.001 | |
| WC-Z, x±s | 0.32±1.03 | 0.20±1.01 | < 0.001 | 0.42±0.99 | -0.44±0.79 | < 0.001 | |
| Fruit and vegetable intake/(portions/day), x±s | 3.17±2.19 | 3.17±2.06 | 0.994 | 3.23±2.34 | 3.42±2.34 | 0.155 | |
| Meat intake/(portions/day), x±s | 1.36±1.38 | 1.05±1.10 | < 0.001 | 1.12±0.89 | 1.05±0.74 | 0.177 | |
| Moderate and high intensity exercise/(h/d), x±s | 1.20±1.48 | 0.94±1.22 | < 0.001 | 1.04±0.99 | 0.88±0.92 | 0.005 | |
| Puberty onset age/years, M (P25, P75) | 13.08 (12.33, 13.92) | 12.25 (11.58, 12.92) | < 0.001 | 11.10 (10.41, 11.58) | 9.65 [8.95, 10.38] | < 0.001 | |