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Table 2 Participant demographic characteristics

From: Co-occurrence subgroups of child sexual abuse, health risk behaviors and their associations among secondary school students in China

  Full Sample Male Female
n (%) n (%) n (%)
Area
 Urban 4305 (49.2) 2168 (50.0) 2137 (48.5)
 Rural 4441 (50.8) 2171 (50.0) 2270 (51.5)
Grade
 Seventh grade 2246 (25.7) 1191 (27.4) 1055 (23.9)
 Eighth grade 1147 (13.1) 625 (14.4) 522 (11.8)
 Ninth grade 1021 (11.7) 517 (11.9) 504 (11.4)
 Tenth grade 2431 (27.8) 1133 (26.1) 1298 (29.5)
 Eleventh grade 1092 (12.5) 483 (11.1) 609 (13.8)
 Twelfth grade 809 (9.2) 390 (9.0) 419 (9.5)
Age
 12 y 350 (4.0) 153 (3.5) 197 (4.5)
 13 y 1756 (20.1) 895 (20.6) 861 (19.5)
 14 y 1207 (13.8) 687 (15.8) 520 (11.8)
 15 y 1101 (12.6) 562 (13.0) 539 (12.2)
 16 y 1418 (16.2) 655 (15.1) 763 (17.3)
 17 y 1574 (18.0) 732 (16.9) 842 (19.1)
 18 y 1340 (15.3) 655 (15.1) 685 (15.5)
Whether to live on campus
 No 4404 (50.4) 2349 (54.1) 2055 (46.6)
 Yes 4342 (49.6) 1990 (45.9) 2352 (53.4)
Academic performance
 Good 3605 (41.2) 1705 (39.3) 1900 (43.1)
 Fair 3602 (41.2) 1686 (38.9) 1916 (43.5)
 Poor 1539 (17.6) 948 (21.8) 591 (13.4)
Peer relationship
 Good 5255 (60.1) 2610 (60.2) 2645 (60.0)
 Fair 3266 (37.3) 1605 (37.0) 1661 (37.7)
 Poor 225 (2.6) 124 (2.9) 101 (2.3)
Sibling number
 None 4350 (49.7) 2436 (56.1) 1914 (43.4)
 One 3165 (36.2) 1385 (31.9) 1780 (40.4)
Two or more 1231 (14.1) 518 (11.9) 713 (16.2)
 Marital status of parents
 Normal / married 7782 (89.6) 3866 (89.9) 3916 (89.3)
 Divorced / separation 670 (7.7) 326 (7.6) 344 (7.8)
 Death of one or both parents 233 (2.7) 110 (2.6) 123 (2.8)
Parents’ relationship
 Harmonious 5189 (66.7) 2564 (66.3) 2625 (67.0)
 Not harmonious 2593 (33.3) 1302 (33.7) 1291 (33.0)
Father’s education
 Elementary and below 1298 (15.7) 603 (14.8) 695 (16.6)
 Junior high school 4276 (51.9) 2050 (50.5) 2226 (53.2)
 High school / Vocational school 2002 (24.3) 1038 (25.5) 964 (23.0)
 College and above 670 (8.1) 372 (9.2) 298 (7.1)
Relationship with father
 Good 5117 (58.5) 2517 (58.0) 2600 (59.0)
 Fair 2283 (26.1) 1153 (26.6) 1130 (25.6)
 Poor 1346 (15.4) 669 (15.4) 677 (15.4)
Severity of father
 Strict 1199 (13.7) 626 (14.4) 573 (13.0)
 Average 6510 (74.4) 3208 (73.9) 3302(74.9)
 Easy-going 1037 (11.9) 505 (11.6) 532 (12.1)
Mother degree
 Elementary and below 1244 (14.2) 572 (13.2) 672 (15.2)
 Junior high school 4092 (46.8) 1948 (44.9) 2144 (48.6)
 High school / Vocational school 1810 (20.7) 935 (21.5) 875 (19.9)
 College and above 1600 (18.3) 884 (20.4) 716 (16.2)
Relationship with mother
 Good 5926 (67.8) 2914 (67.2) 3012 (68.3)
 Fair 1949 (22.3) 1014 (23.4) 935 (21.2)
 Poor 871 (10.0) 411 (9.5) 460 (10.4)
Severity of mother
 Strict 1771 (20.2) 881 (20.3) 890 (20.2)
 Average 6370(72.8) 3146(72.5) 3224(73.2)
 Easy-going 605 (6.9) 312 (7.2) 293 (6.6)
free time lifestyle
 Staying at home 3702 (42.3) 1494 (34.4) 2208 (50.1)
 Watching TV/video 4089 (46.8) 1643 (37.9) 2446 (55.5)
 sports 2074 (23.7) 1345 (31.0) 729 (16.5)
 Reading 2586 (29.6) 1098 (25.3) 1488 (33.8)
 Internet surfing 6264 (71.6) 3267 (75.3) 2997 (68.0)
Total 8746(100) 4339(100) 4407(100)