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Table 1 Demographic characteristics of the study sample (n = 4805)

From: Prevalence of depression and its correlative factors among female adolescents in China during the coronavirus disease 2019 outbreak

Variables Total, n (%) Depression p value
No, n (%) Yes, n (%)
Age, year     < 0.001*
 11–14 2114 (44.0) 1462 (69.2) 652 (30.8)  
 15–18 2691 (56.0) 1444 (53.7) 1247 (46.3)  
Grade     < 0.001*
 Junior secondary school 2692 (56.0) 1789 (66.5) 903 (33.5)  
 Senior secondary school 2113 (44.0) 1117 (52.9) 996 (47.1)  
Participating in distant learning     < 0.001*
 Yes 4459 (92.8) 2747 (61.6) 1712 (38.4)  
 No 346 (7.2) 159 (46.0) 187 (54.0)  
Study duration/day, h     0.067
  < 4 3254 (67.7) 1939 (59.6) 1318 (40.4)  
  ≥ 4 1551 (32.3) 967 (62.3) 584 (37.7)  
Parents as frontline workers     0.345
 Yes 415 (8.6) 242 (58.3) 173 (41.7)  
 No 4390 (91.4) 2664 (60.7) 1726 (39.3)  
Having infected acquaintances     0.536
 Yes 160 (3.3) 93 (58.1) 67 (41.9)  
 No 4645 (96.7) 2813 (60.6) 1832 (39.4)  
No. of infected patients at living province     0.020*
  < 1000 4031 (83.9) 2409 (59.8) 1622 (40.2)  
  ≥ 1000 774 (16.1) 497 (64.2) 277 (35.8)  
Concerned about COVID-19     0.001*
 Yes 4765 (99.2) 2892 (60.7) 1873 (39.3)  
 No 40 (0.8) 14 (35.0) 26 (65.0)  
Sleep duration/day, h     < 0.001*
  < 6 218 (4.5) 77 (35.3) 141 (64.7)  
 6–8 2854 (59.4) 1672 (58.6) 1182 (41.4)  
  > 8 1733 (36.1) 1157 (66.8) 576 (33.2)  
Physical exercise duration/day (indoor and outdoor), min     < 0.001*
  < 30 2364 (49.2) 1268 (53.6) 1096 (46.4)  
 30–60 2127 (44.3) 1432 (67.3) 695 (32.7)  
  > 60 314 (6.5) 206 (65.6) 108 (34.4)  
Residence     0.07
 Dorm 4215 (87.7) 2529 (60.0) 1686 (40.0)  
 No dorm 590 (12.3) 377 (63.9) 213 (36.1)  
  1. * Statistically significant