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Table 1 Characteristics of the Study Population (N = 8,746)

From: Anorexia nervosa, depression and suicidal thoughts among Chinese adolescents: a national school-based cross-sectional study

Variables Number (%)
Gender
 Male 4,339(49.61)
 Female 4,407(50.39)
Grade
 Junior school students 4,414(50.47)
 Senior school students 4,332(49.53)
Smoking
 Yes 1,877(21.46)
 No 6,869(78.54)
Academic achievement
 High 3,605(41.22)
 Average 3,602(41.18)
 Low 1,539(17.60)
Living arrangement
 Two biological parents 6,543(74.81)
 Biological father or mother 921(10.53)
 Others 1,282(14.66)
Family socioeconomic status
 High 472(5.40)
 Average 6,829(78.08)
 Low 1,445(16.52)
Relationship with parents
 Good 7,152(91.90)
 Average 533(6.85)
 Poor 97(1.25)
Relationship with classmates
 Good 5,255(60.08)
 Average 3,266(37.34)
 Poor 225(2.57)
Feelings about school
 Good 5,249(60.02)
 Average 3,061(35.00)
 Bad 436(4.99)
Reactions to parent-child conflict
 Suffer in silence 6,898(78.87)
 Argue with parents 1,848(21.13)
Anorexia nervosa
 Never 2,538(29.02)
 Occasionally 4,783(54.69)
 Sometimes 1,169(13.37)
 Often 256(2.93)
Suicidal thoughts
 Yes 1,069(12.22)
 No 7,677(87.78)
Depression
 Yes 1,952(22.32)
 No 6,794(77.68)