Table 1 Baseline characteristics of all subjects in the multi-center case-control study
Variables | Total (N = 3990) | HTs | Controls | P value | mOR (95%CI) | Uniform T-score of MMPI-2 Hysteria Scale (M ± SD) | |||
|---|---|---|---|---|---|---|---|---|---|
(n = 1329) | (n = 2661) | HTs (n = 1329) | P value | Controls (n = 2661) | P value | ||||
Age (years) | |||||||||
 13 | 858 (21.5) | 286 (21.5) | 572 (21.5) | 1.000a | NA | 67.0 ± 5.0 | 0.272c | 47.0 ± 8.5 | 0.102c |
 14 | 810 (20.3) | 269 (22.2) | 541 (20.3) |  |  | 66.5 ± 4.8 |  | 46.8 ± 9.0 |  |
 15 | 723 (18.1) | 241 (18.1) | 482 (18.1) |  |  | 66.2 ± 5.0 |  | 46.7 ± 8.5 |  |
 16 | 660 (16.5) | 220 (16.6) | 440 (16.5) |  |  | 66.2 ± 4.5 |  | 47.0 ± 8.5 |  |
 17 | 474 (11.9) | 158 (11.9) | 316 (11.9) |  |  | 66.6 ± 4.7 |  | 46.6 ± 9.1 |  |
 18 | 465 (11.7) | 155 (11.7) | 310 (11.7) |  |  | 66.0 ± 4.9 |  | 47.5 ± 8.4 |  |
Gender | |||||||||
 Male | 1842 (46.2) | 614 (46.2) | 1228 (46.1) | 1.000b | 1.00(0.88–1.14) | 66.3 ± 4.7 | < 0.001 d | 46.8 ± 8.7 | 0.012 d |
 Female | 2148 (53.8) | 715 (53.8) | 1433 (53.9) |  |  | 67.6 ± 5.2 |  | 47.5 ± 8.9 |  |
Nationality | |||||||||
 Han | 3943 (98.8) | 1315 (98.9) | 2628 (98.8) | 0.604b | 1.18(0.64–2.19) | 66.4 ± 4.8 | 0.333d | 46.3 ± 8.4 | 0.834d |
 Ethnic minorities | 47 (1.2) | 14 (1.1) | 33 (1.2) |  |  | 67.7 ± 5.7 |  | 46.6 ± 8.7 |  |
Residence area | |||||||||
 Rural | 2157 (54.1) | 730 (54.9) | 1427 (53.6) | 0.419b | 1.06(0.93–1.21) | 66.8 ± 4.9 | 0.056d | 46.7 ± 8.8 | 0.475d |
 Urban | 1833 (45.9) | 599 (45.1) | 1234 (46.4) |  |  | 66.2 ± 4.7 |  | 46.5 ± 8.4 |  |
Sampling area | |||||||||
 Anhui | 1354 (33.9) | 451 (33.9) | 903 (33.9) | 0.999a | NA | 66.5 ± 4.9 | 0.802c | 46.7 ± 8.5 | 0.892c |
 Zhejiang | 1195 (29.9) | 397 (29.9) | 798 (30.0) |  |  | 66.6 ± 4.8 |  | 46.5 ± 8.8 |  |
 Jiangsu | 1441 (36.2) | 481 (36.2) | 960 (36.1) |  |  | 66.3 ± 4.7 |  | 46.7 ± 8.7 |  |