Table 1 Mean (SD) demographic and clinical characteristics

Age (years)

21.53 (4.15)

22.21 (3.47)

20.56 (8.42)

22.16 (3.60)

F(3,106.95) = 1.21

0.31

0.02

IQ

109.97 (9.97)

110.91 (10.39)

107.31 (10.89)

111.46 (8.42)

F(3,208) = 1.60

0.19

0.02

BMI^†

16.63 (2.60)^a

21.05 (3.11)^b

21.60 (5.27)^b

21.57 (1.70)^b

X²(3) = 127.12

 < 0.001

0.58

%on psychiatric medication

50%^a

39%^a

30%^a

0%^b

X²(3) = 43.80

 < 0.001

0.45

Age at AN diagnosis

16.80 (3.62)

15.56 (2.52)

–

–

t(102.89) = 2.08

0.04

0.40

EDE-Q^†

3.62 (2.60)^a

1.15 (1.71)^b

–

0.34 (0.83)^c

X²(2) = 82.71

 < 0.001

0.47

Anxiety (Z score)

2.43 (1.42)^a

1.71 (1.71)^ab

1.40 (1.93)^b

0.00 (1.00)^c

F(3,91.87) = 44.50

 < 0.001

0.31

Depression (Z score)

3.79 (2.74)^a

1.72 (2.01)^b

2.04 (2.15)^b

0.00 (1.00)^c

F(3,88.90) = 44.36

 < 0.001

0.35