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Table 1 Demographic and clinical characteristics of the participants per group (full and partial relapse vs. non-relapse) including outcome univariate Cox regression

From: Rate, timing and predictors of relapse in patients with anorexia nervosa following a relapse prevention program: a cohort study

Variable Full and partial relapse group
(n = 25)
Non relapse group
(n = 58)
Univariate Cox regression
p value
Univariate Cox regression
Exp(B)
Onset eating disorder (years) 15.1 14.1 0.440 1.034
Duration of the eating disorder (years) 3.7 3.4 0.447 1.055
Duration of treatment before the aftercare-program (months) 25.6 16.2 0.007* 1.028
BMI at start treatment (kg/m2) 16.3 16.4 0.621 0.954
BMI at start of aftercare program 19.9 20.0 0.776 0.965
BMI at the end of aftercare program 19.9 20.4 0.166 0.865
Age 18 years or younger 22,4 % (n = 13) 77,6 % (n = 45) / /
Age 19 years or older 48 % (n = 12) 52 % (n = 13) 0.034* 2.344
Subtype ANBP 23.1 % (n = 3) 76.9 % (n = 10) / /
Subtype ANR 31.4 % (n = 22) 68.6 % (n = 48) 0.709 1.259
Type of treatment before the aftercare-program (patients received only outpatient treatment) 32 % (n = 8) 56,9 % (n = 33) / /
Type of treatment before the aftercare-program (patients received in- and outpatient treatment) 68 % (n = 17) 43.1 % (n = 25) 0.039* 2.425
Severity eating disorder DSM 5: Mild 16 % (n = 4) 12.1 % (n = 7) 0.764 1.179
Severity eating disorder DSM 5: Moderate 12 % (n = 3) 20.7 % (n = 12) 0.321 0.543
Severity eating disorder DSM 5: Severe 8 % (n = 2) 13.8 % (n = 8) 0.447 0.571
Severity eating disorder DSM 5: Extreme 64 % (n = 16) 53.4 % (n = 31) 0.266 1.591
Comorbidity 52 % (n = 13) 51.7 % (n = 30) 0.948 1.027
Anxiety disorder 0 % (n = 0) 6.9 % (n = 4) 0.458 0.046
Depressive disorder 24 % (n = 6) 8.6 % (n = 5) 0.151 1.963
Dysthymia 0 % (n = 0) 5.2 % (n = 3) 0.515 0.047
Obsessive compulsive disorder 0 % (n = 0) 6.9 % (n = 4) 0.426 0.046
Parent-child Relational Problem 24 %(n = 6) 19 % (n = 11) 0.363 1.533
Autism 0 % (n = 0) 1.7 % (n = 1) 0.660 0.048
Personality disorder 8 % (n = 2) 10.3 % (n = 6) 0.730 0.775
  1. BMI body mass index, ANR anorexia nervosa restrictive, ANBP anorexia nervosa binge purge
  2. *statistically significant