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Table 1 One-month prevalence of eating disorders in First-Australian (FA) and other-Australian (OA) adolescents

From: Prevalence, features and health impacts of eating disorders amongst First-Australian Yiramarang (adolescents) and in comparison with other Australian adolescents

 First-Australian AdolescentsOther-Australian Adolescents 
% (95% CI)% (95% CI)χ2 (1), p
Any Eating Disorder (Major, OSFED, UFED)28.62 (23.83–33.94)21.68 (20.38–23.03)7.84, .005
Major Eating Disorder7.53 (5.15–10.88)6.07 (5.38–6.85).13, .288
 Anorexia Nervosa (AN).89 (.30–2.59).66 (.45–.96)0.49, .401†
 Probable Bulimia Nervosa (BN)5.11 (3.21–8.02)4.45 (3.86–5.13).31, .579
 Probable Binge Eating Disorder (BED)1.80 (.83–3.87).96 (.70–1.31)2.16, .142
Other Specified Feeding and Eating Disorders (OSFED)15.22 (11.71–19.55)10.77 (9.83–11.78)5.97, .015
 Atypical Anorexia Nervosa (OSFED-AAN)3.92 (2.30–6.58)2.69 (2.23–3.23)1.71, .191
 Subthreshold Bulimia Nervosa (OSFED-SBN)1.50 (.64–3.47)2.21 (1.8–2.71).74, .390
 Subthreshold Binge Eating Disorder (OSFED-SBED).30 (.05–1.68).32 (.19–.55)<.01, .952
 Purging Disorder (OSFED-PD)5.11 (3.21–8.02)3.12 (2.63–3.7)3.82, .051
 Night Eating Syndrome (OSFED-NES)7.14 (4.81–10.49)3.72 (3.17–4.36)9.12, .003
Unspecified Feeding or Eating Disorder (UFED)5.32 (3.30–8.46)4.47 (3.85–5.19).46, .500
  1. Note. Significant effects are highlighted in bold text. Based on weighted data. † based on Fishers Exact test due to low cell numbers. Total N for prevalence analyses varied for each diagnosis, dependent on the missingness of diagnostic data (AN: N = 4425; BN: N = 4401; BED/PD: N = 4399; AAN: N = 4388; sBN/sBED = 4398; NES: N = 4220; UFED: N = 3989; Major ED: N = 4401; OSFED: N = 4223; Any ED: N = 4036). The proportions of each diagnosis do not add up to the totals, except for the other-Australian category of Major eating disorders because where the DSM-5 allows it there is comorbidity (for instance between the OSFED diagnoses) – this is why the major eating disorder category proportion total is closer to the summation of the individual diagnoses within that category (the DSM-5 does not allow concurrent diagnosis between AN, BN and BED). The chi-square analyses are weighted, which slightly alters cell numbers