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Table 1 Baseline characteristics of all subjects in the multi-center case-control study

From: Gender differences in the prevalence and impact factors of hysterical tendencies in adolescents from three eastern Chinese provinces

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  
  1. Data expressed as n (%). Uniform T-score according to formula conversion methods for standardization. Uniform T-scores of HTs and control groups are compared respectively in baseline characteristics. Bold values are those that reach statistical significance (P < 0.05)
  2. M ± SD mean ± standard deviation, HTs hysterical tendencies, MMPI Minnesota Multiphasic Personality Inventory, mOR matched odds ratios, CI confidence interval, NA not available
  3. aKruskal-Wallis nonparametric tests
  4. bPearson chi-square test
  5. cBartlett’s one-way ANOVA
  6. dIndependent t tests