Table 1 Baseline characteristics with full samples
Variables | Male | Female | Total | t/χ2 | P |
|---|---|---|---|---|---|
N (%) | N (%) | N (%) | |||
N | 6224 (47.49) | 6883 (52.51) | 13107 (100) | ||
Age (years) | 59.91 ± 9.38 | 58.95 ± 9.67 | 59.40 ± 9.55 | 5.785 | 0.000 |
Average hours for one night | 6.47 ± 1.81 | 6.24 ± 1.95 | 6.35 ± 1.89 | 6.982 | 0.000 |
Diseases (0-14) | 1.30 ± 1.34 | 1.46 ± 1.41 | 1.38 ± 1.38 | -6.241 | 0.000 |
CESD | 7.48 ± 5.84 | 9.47 ± 6.56 | 8.53 ± 6.31 | -18.318 | 0.000 |
BMI | 22.97 ± 3.70 | 23.96 ± 4.16 | 23.49 ± 3.98 | -14.341 | 0.000 |
Age (years) | |||||
45-49 | 1063 (17.08) | 1481 (21.52) | 2544 (19.41) | 51.737 | 0.000 |
50-54 | 903 (14.51) | 1022 (14.85) | 1925 (14.69) | ||
55-59 | 1297 (20.84) | 1422 (20.66) | 2719 (20.74) | ||
60-64 | 1120 (17.99) | 1173 (17.04) | 2293 (17.49) | ||
65-69 | 782 (12.56) | 731 (10.62) | 1513 (11.54) | ||
≥ 70 | 1059 (17.01) | 1054 (15.31) | 2113 (16.12) | ||
Education | |||||
Illiterate | 786 (12.63) | 2881 (41.86) | 3667 (27.98) | 1416.286 | 0.000 |
Less than elementary school | 4537 (72.90) | 3488 (50.68) | 8025 (61.23) | ||
High school | 560 (9.00) | 354 (5.14) | 914 (6.97) | ||
Above vocational school | 341 (5.48) | 160 (2.32) | 501 (3.82) | ||
Marital status | |||||
Single | 604 (9.70) | 1103 (16.02) | 1707 (13.02) | 115.274 | 0.000 |
Married | 5620 (90.30) | 5780 (83.98) | 11400 (86.98) | ||
Hukou | |||||
Non-agricultural hukou | 1302 (20.92) | 1225 (17.80) | 2527 (19.28) | 20.464 | 0.000 |
Agricultural hukou | 4922 (79.08) | 5658 (82.20) | 10580 (80.72) | ||
Current residence | |||||
Rural | 3999 (64.25) | 4264 (61.95) | 8263 (63.04) | 7.431 | 0.006 |
Urban | 2225 (35.75) | 2619 (38.05) | 4844 (36.96) | ||
Smoke | |||||
NO | 1566 (25.16) | 6290 (91.38) | 7856 (59.94) | 5972.096 | 0.000 |
Former smoke | 1032 (16.58) | 159 (2.31) | 1191 (9.09) | ||
Current smoke | 3626 (58.26) | 434 (6.31) | 4060 (30.98) | ||
Drinking | |||||
NO | 2751 (44.20) | 6050 (87.90) | 8801 (67.15) | 2949.096 | 0.000 |
Less than once a month | 686 (11.02) | 355 (5.16) | 1041 (7.94) | ||
More than once a month | 2787 (44.78) | 478 (6.94) | 3265 (24.91) | ||
Eating meals | |||||
≤ 2 meals per day | 813 (13.06) | 932 (13.54) | 1745 (13.31) | 0.722 | 0.697 |
3 meals per day | 5310 (85.31) | 5844 (84.90) | 11154 (85.10) | ||
≥ 4 meals per day | 101 (1.62) | 107 (1.55) | 208 (1.59) | ||
Taking activities | |||||
No | 3057 (49.12) | 3458 (50.24) | 6515 (49.71) | 1.650 | 0.199 |
Yes | 3167 (50.88) | 3425 (49.76) | 6592 (50.29) | ||
Ever been in major accidental injury | |||||
NO | 5416 (87.02) | 6412 (93.16) | 11828 (90.24) | 139.885 | 0.000 |
Yes | 808 (12.98) | 471 (6.84) | 1279 (9.76) | ||
Self-report health status | |||||
Very poor | 884 (14.20) | 1272 (18.48) | 2156 (16.45) | 92.455 | 0.000 |
Poor | 2186 (35.12) | 2616 (38.01) | 4802 (36.64) | ||
Fair | 2092 (33.61) | 2100 (30.51) | 4192 (31.98) | ||
Good | 824 (13.24) | 722 (10.49) | 1546 (11.80) | ||
Very good | 238 (3.82) | 173 (2.51) | 411 (3.14) | ||
Having regular physical exercises | |||||
No physical exercise | 3906 (62.76) | 4230 (61.46) | 8136 (62.07) | 2.391 | 0.303 |
Less than regular physical exercises | 1145 (18.40) | 1318 (19.15) | 2463 (18.79) | ||
Regular physical exercises | 1173 (18.85) | 1335 (19.40) | 2508 (19.13) | ||
BMI | |||||
Underweight | 432 (6.94) | 474 (6.89) | 906 (6.91) | 252.969 | 0.000 |
Average | 3698 (59.42) | 3225 (46.85) | 6923 (52.82) | ||
Overweight | 1586 (25.48) | 2201 (31.98) | 3787 (28.89) | ||
Obese | 508 (8.16) | 983 (14.28) | 1491 (11.38) | ||
CESD | 256.776 | ||||
CES-D < 10 | 4313 (69.30) | 3834 (55.70) | 8147 (62.16) | 0.000 | |
CES-D ≥ 10 | 1911 (30.70) | 3049 (44.30) | 4960 (37.84) | ||