Table 3.
Baseline characteristics in female study population (N = 6883)
| Variables | Under-weight (%) | Normal weight (%) | Over-weight (%) | Obese (%) | χ2 | P |
|---|---|---|---|---|---|---|
| Age (years) | ||||||
| 45-49 | 42 (8.86) | 661 (20.50) | 542 (24.63) | 236 (24.01) | 254.403 | 0.000 |
| 50-54 | 36 (7.59) | 448 (13.89) | 372 (16.90) | 166 (16.89) | ||
| 55-59 | 89 (18.78) | 682 (21.15) | 435 (19.76) | 216 (21.97) | ||
| 60-64 | 71 (14.98) | 548 (16.99) | 390 (17.72) | 164 (16.68) | ||
| 65-69 | 70 (14.77) | 349 (10.82) | 220 (10.00) | 92 (9.36) | ||
| ≥ 70 | 166 (35.02) | 537 (16.65) | 242 (11.00) | 109 (11.09) | ||
| Education | ||||||
| Illiterate | 274 (57.81) | 1431 (44.37) | 824 (37.44) | 352 (35.81) | 106.379 | 0.000 |
| Less than elementary school | 190 (40.08) | 1577 (48.90) | 1172 (53.25) | 549 (55.85) | ||
| High school | 7 (1.48) | 154 (4.78) | 135 (6.13) | 58 (5.90) | ||
| Above vocational school | 3 (0.63) | 63 (1.95) | 70 (3.18) | 24 (2.44) | ||
| Marital status | ||||||
| Single | 128 (27.00) | 583 (18.08) | 275 (12.49) | 117 (11.90) | 85.360 | 0.000 |
| Married | 346 (73.00) | 2642 (81.92) | 1926 (87.51) | 866 (88.10) | ||
| Hukou | ||||||
| Non-agricultural hukou | 46 (9.70) | 500 (15.50) | 457 (20.76) | 222 (22.58) | 61.443 | 0.000 |
| Agricultural hukou | 428 (90.30) | 2725 (84.50) | 1744 (79.24) | 761 (77.42) | ||
| Current residence | ||||||
| Rural | 364 (76.79) | 2111 (65.46) | 1269 (57.66) | 520 (52.90) | 112.514 | 0.000 |
| Urban | 110 (23.21) | 1114 (34.54) | 932 (42.34) | 463 (47.10) | ||
| Smoke | ||||||
| NO | 396 (83.54) | 2945 (91.32) | 2034 (92.41) | 915 (93.08) | 53.824 | 0.000 |
| Former smoke | 13 (2.74) | 72 (2.23) | 52 (2.36) | 22 (2.24) | ||
| Current smoke | 65 (13.71) | 208 (6.45) | 115 (5.22) | 46 (4.68) | ||
| Drinking | ||||||
| NO | 412 (86.92) | 2803 (86.91) | 1941 (88.19) | 894 (90.95) | 15.206 | 0.019 |
| Less than once a month | 22 (4.64) | 174 (5.40) | 120 (5.45) | 39 (3.97) | ||
| More than once a month | 40 (8.44) | 248 (7.69) | 140 (6.36) | 50 (5.09) | ||
| Eating meals | ||||||
| ≤ 2 meals per day | 99 (20.89) | 469 (14.54) | 257 (11.68) | 107 (10.89) | 45.651 | 0.000 |
| 3 meals per day | 369 (77.85) | 2694 (83.53) | 1912 (86.87) | 869 (88.40) | ||
| ≥ 4 meals per day | 6 (1.27) | 62 (1.92) | 32 (1.45) | 7 (0.71) | ||
| Taking activities | ||||||
| No | 280 (59.07) | 1722 (53.40) | 1037 (47.11) | 419 (42.62) | 59.035 | 0.000 |
| Yes | 194 (40.93) | 1503 (46.60) | 1164 (52.89) | 564 (57.38) | ||
| Ever been in major accidental injury | ||||||
| NO | 439 (92.62) | 2993 (92.81) | 2056 (93.41) | 924 (94.00) | 2.155 | 0.541 |
| Yes | 35 (7.38) | 232 (7.19) | 145 (6.59) | 59 (6.00) | ||
| Self-report health status | ||||||
| Very poor | 117 (24.68) | 605 (18.76) | 376 (17.08) | 174 (17.70) | 37.831 | 0.000 |
| Poor | 208 (43.88) | 1197 (37.12) | 831 (37.76) | 380 (38.66) | ||
| Fair | 103 (21.73) | 996 (30.88) | 696 (31.62) | 305 (31.03) | ||
| Good | 36 (7.59) | 337 (10.45) | 245 (11.13) | 104 (10.58) | ||
| Very good | 10 (2.11) | 90 (2.79) | 53 (2.41) | 20 (2.03) | ||
| Having regular physical exercises | ||||||
| No physical exercise | 326 (68.78) | 1931 (59.88) | 1350 (61.34) | 623 (63.38) | 26.666 | 0.000 |
| Less than regular physical exercises | 82 (17.30) | 676 (20.96) | 390 (17.72) | 170 (17.29) | ||
| Regular physical exercises | 66 (13.92) | 618 (19.16) | 461 (20.95) | 190 (19.33) | ||
| CESD | ||||||
| CES-D < 10 | 202 (42.62) | 1717 (53.24) | 1299 (59.02) | 616 (62.67) | 69.944 | 0.000 |
| CES-D ≥ 10 | 272 (57.38) | 1508 (46.76) | 902 (40.98) | 367 (37.33) | ||
CESD: Center for Epidemiologic Studies- depressive symptoms scale
BMI body mass index, BMI Categories include Underweight (–18.5 kg/m2)/Normal weight (18.5–24 kg/m2)/Overweight (24–28 kg/m2)/Obesity (28– kg/m2)
Hukou: it is an important part of household registration in china and is strictly enforced.Non-agricultural hukou people primarily live in the city and work in factories, public institutions and other workplaces. They have no farm land but have the convenience of city life. Agricultural hukou people primarily live in villages and depend on agriculture and farming for their livelihood