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Table 1 Demographic and clinical features of those who completed treatment and those who did not complete treatment

From: Pre-treatment predictors of attrition in a randomised controlled trial of psychological therapy for severe and enduring anorexia nervosa

Feature Completers Non completers Total Statistical result
  n = 48 n = 15 n = 63  
  n (%) χ 2, df, p
Anorexia Nervosa Purging type 8 (16.6%) 8 (53.3%) 16 (25.4%) 8.11, 1, 0.008*
Graduate education 32 (67%) 8 (57%) 40 (64%) 0.43, 1, 0.36
Randomised to CBT therapy 22 (46%) 9 (60%) 31 (49%) 0.92, 1, 0.34
  Mean (SD) t, df, p
EDE global score 2.78 (1.28) 3.70 (1.45) 3.00 (1.37) 2.34, 61, 0.01
EDE restraint score 2.86 (1.81) 3.90 (1.27) 3.11 (1.75) 2.05, 61, 0.023
EDE eating concern score 2.62 (1.49) 3.28 (1.54) 2.78 (1.52) 1.49, 61, 0.07
EDE shape concern score 3.08 (1.36) 4.04 (1.71) 3.31 (1.50) 2.23, 61, 0.015
EDE weight concern score 2.56 (1.62) 3.57 (1.96) 2.80 (1.75) 2.01, 61, 0.024
SF 12 physical health component score 48.55 (9.70) 50.29 (6.75) 48.99 (9.03) 0.87, 61, 0.19
SF 12 mental health component score 33.39 (12.55) 27.44 (10.20) 31.88 (12.20) −1.49, 61, 0.07
BDI total Score 25.04 (14.10) 30.44 (12.59) 26.41 (13.84) 1.20, 61, 0.12
EDQOL psychological score 2.53 (0.75) 3.08 (0.67) 2.66 (0.77) 2.53, 61, 0.007*
EDQOL physiological cognitive score 2.09 (0.88) 2.31 (0.31) 2.14 (0.78) 0.88, 61, 0.19
EDQoL Work & school score 0.61 (0.68) 1.29 (0.65) 0.78 (0.73) 3,18, 52, 0.002*
EDQoL Financial score 0.48 (0.69) 1.14 (0.71) 0.63 (0.74) 3.12, 61, 0.002*
EDQoL Total score 1.67 (0.60) 2.21 (0.38) 1.81 (0.60) 3.06, 61, 0.002*
Work and Social Adjustment Scale Total score 16.98 (10.36) 22.69 (8.05) 18.43 (10.08) 1.94, 61, 0.029
ANSOQ Total score 2.59 (0.58) 2.48 (0.63) 2.56 (0.59) 0.89, 61, 0.18
ANSOCQ Weight gain score 2.19 (0.73) 1.98 (0.79) 2.14 (0.74) 1.11, 61, 0.14
ANSOCQ Eating, Weight and Shape score 2.82 (0.66) 2.77 (0.58) 2.81 (0.64) .44, 61, 0.32
ANSOCQ Ego –Alien Aspects score 2.79 (0.69) 2.72 (0.77) 2.77 (0.71) .591, 61, 0.27
  Median (IQ range) Mann–Whitney UZ, p
Duration of illness/years 14 (9–19.8) 19 (14–26) 14 (9–23) 1.74, 0.041
  1. Probability levels are one-tailed, *p < 0.01, CBT = Cognitive Behaviour Therapy, EDE = Eating Disorder Examination [22], SF = Short-Form [25], BDI = Beck depression inventory [26], EDQoL = Eating Disorder Quality of Life [24], ANSOCQ = Anorexia Nervosa Stage of Change Questionnaire [23].