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Table 3 Association of anorexia nervosa, depression and their interaction with suicidal thoughts

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

Variables With depression(n = 1,952)a Without depression(n = 6,794)a Full model(n = 8,746)b
OR (95% CI) P Value OR (95% CI) P Value OR (95% CI) P Value
All (n = 8,746) Anorexia nervosa       
Never(n = 2,538) 1.00 - 1.00 - 1.00 -
Occasionally(n = 4,783) 0.96(0.71,1.28) 0.760 1.38(1.07,1.79) 0.010 1.41(1.10,1.82) 0.008
Sometimes(n = 1,169) 0.93(0.65,1.33) 0.700 1.53(1.08,2.18) 0.020 1.61(1.14,2.28) 0.007
Often(n = 256) 1.30(0.78,2.19) 0.320 2.82(1.62,4.91) <0.001 3.02(1.75,5.23) <0.001
Depression(yes) - - - - 7.25(5.18,10.14) <0.001
Male (n = 4,339) Anorexia nervosa With depression(n = 985)a Without depression(n = 3,354)a Full model(n = 4,339)b
Never(n = 1,375) 1.00 - 1.00 - 1.00 -
Occasionally(n = 2,318) 1.10(0.73,1.67) 0.645 1.36(0.93,2.00) 0.114 1.26(0.96,1.67) 0.101
Sometimes(n = 530) 0.82(0.47,1.43) 0.489 0.85(0.45,1.61) 0.622 0.92(0.61,1.38) 0.688
Often(n = 116) 0.57(0.24,1.36) 0.207 2.75(1.12,6.77) 0.027 1.16(0.61,2.21) 0.652
Depression(yes) - - - - 5.21(4.11,6.61) <0.001
Female (n = 4,407) Anorexia nervosa With depression(n = 967)a Without depression(n = 3,440)a Full model(n = 4,407)b
Never(n = 1,163) 1.00 - 1.00 - 1.00 -
Occasionally(n = 2,465) 0.84(0.55,1.28) 0.407 1.38(0.97,1.95) 0.073 1.18(0.90,1.53) 0.231
Sometimes(n = 639) 0.96(0.59,1.57) 0.872 2.08(1.33,3.24) 0.001 1.52(1.09,2.11) 0.013
Often(n = 140) 2.17(1.05,4.48) 0.036 2.91(1.42,5.95) 0.003 2.67(1.63,4.39) <0.001
Depression(yes) - - - - 5.00(4.03,6.19) <0.001
  1. CI confidence interval, OR odds ratio
  2. aAdjusted for potential confounders listed in Table 2
  3. bAdjusted for potential confounders listed in Table 2 and interactions between anorexia nervosa and depression
  4. Results in bold indicate the associations were significant at 0.05 level