Table 1

Data for age, sex, auxological parameters, medical instability and duration of illness of different eating disorder categories

Anorexia nervosa (n=76)EDNOS (n=83)Other (n=40)BN (n=3)BED (n=6)
Age
 Median (IQR)11.80 (1.54)11.90 (1.99)11.80 (1.48)10.21 (range 9.54–10.51)11.42 (1.49)
Females, n (%)88% (66)84.5% (71)67.5% (27)100% (3)66.7% (4)
Weight z-score at diagnosisN=38
 Mean (SD)−1.73 (0.77)–0.23 (0.88)−1.39 (1.03)−0.11 (0.66)1.89 (1.40)
Height z-score at diagnosisN=70N=38N=2
 Mean (SD)−0.22 (1.12)0.19 (1.07)−0.15 (1.11)0.23 (0.47)1.18 (1.00)
BMI at diagnosis (kg/m2)N=70N=38N=222.8
 Median (IQR)13.80 (1.26)1 6.50 (1.69)14.00 (2.44)15.90 (range 14.7–17.12)14.10
BMI z-scoreN=70N=38N=2
 Median (IQR)−2.30 (1.10)−0.57 (1.11)−2.03 (1.52)−0.65 (range −1.29 to −0.1)1.58 (3.01)
%BMIN=70N=38N=2
Median (IQR)77.69 (8)92.90 (9.55)80.30 (11.74)94 (range 88–99.4)129.80 (79.00)
Weight loss (kg)N=39N=46N=27N=1N=3
 Median (IQR)5.50 (6.40)2.10 (6.45)0.50 (3.00)0.300.50 (range 0.10 to −13.80)
Rate of weight loss (kg/week)N=22N=27N=14N=0N=0
 Median (IQR)0.23 (0.30)0.24 (0.37)0.25 (0.30)
Duration of symptoms prior to diagnosis (months)N=68N = 77N=31N=3N=5
 Median (IQR)6.00 (7.75)6.00 (6.00)6.00 (13.00)12 (range 4 to 18)12.00 (12.00)
Medical instabilityN=70N=70N=38N=1N=6
Percentage (n)51.4% (36)27.1% (19)23.7% (9)016.6% (1)
  • Where data were missing within domains, actual numbers are shown (n).

  • %BMI, body mass index as a percentage of population median (50th centile) for age and sex.

  • BED, binge eating disorder; BN, bulimia nervosa; EDNOS, eating disorder not otherwise specified.