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. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Biol Psychiatry. 2014 Dec 23;78(9):606–614. doi: 10.1016/j.biopsych.2014.12.016

Table 1.

Demographic and Clinical Characteristics of Participants.

Table 1. Clinical Characteristics
HC (n=39) AN (n=59)*
Mean ± SD Mean ± SD t df p
Time 1 n=39 n=54**
Age (years) 24.7±7.6 25.0±7.5 −0.17 91 0.87
BMI (kg/m2) 21.7±1.9 16.6±1.5 −3.13 62.5 <0.005
Education (years) 15.1±3.0 14.1±2.1 1.72 63.9 0.09
Eating Disorder Examination 0.08±0.10 3.1±1.4 −15.3 53.7 <0.001
WTAR estimated IQ 108.5±11.8 107.9±8.0 0.26 56.6 0.79
Time 2 n=31 n=43
Days between sessions 58.5±35.4 52.6±15.6 0.87 38.8 0.39
BMI (kg/m2) 21.9±2.0 20.4±0.7 −2.76 50.3 <0.01
EDE 0.1±0.1 2.1±1.3 −13.9 42.7 <0.001
Caucasian N (%) N (%) X2 df p
27 69.2 53 89.8 2.5 1 0.11
Female 37 94.9 57 96.6 0.20 1 0.65
 
Subset of the above participants who also provided fMRI data
HC (n=21) AN (n=25)*
Mean ± SD Mean ± SD t df p
Time 1 n=21 n=23
Age (years) 20.7±2.8 19.3±2.5 1.6 42 0.10
BMI (kg/m2) 21.4±1.8 16.8±1.4 3.1 39.9 <0.005
Education (years) 14.1±2.2 13.2±2.0 1.4 40.6 0.17
Eating Disorder Examination 0.08±0.11 3.09±1.58 −9.1 22.5 <0.001
WTAR estimated IQ 109.3±10.2 104.7±8.1 1.6 34 0.13
Time 2 n=16 n=18
Days between sessions 53.3±30.2 45.4±11.8 1.0 19.1 0.34
BMI (kg/m2) 21.7±1.8 20.2±0.6 3.3 31.8 <0.005
EDE 0.1±0.1 2.3±1.4 −9.6 17.1 <0.001
 

WTAR=Weschler Test of Adult Reading, EDE=Eating Disorder Examination, BMI=Body Mass Index

*

At Time 1, AN-R n=25 and AN-BP n=29. At Time 2, AN-R n=22 and AN-BP n=21.

EDE scores were significantly different between AN-R and AN-BP (3.7±1.1 vs 2.6±1.5, respectively, p=0.004).

**

Three individuals' data were excluded at Time 1, based on the behavioral algorithm. These individuals were included at Time 2. Two subjects participated only at Time 2.

*

At Time 1, AN-R n=13 and AN-BP n=10. At Time 2, AN-R n=9, and AN-BP n=9.

EDE scores did not differ between subtypes.

**Two individuals data were excluded at Time 1, based on the behavioral algorithm. These individuals were included at Time 2. One HC and one subject with AN had fMRI data that was excluded due to motion, their behavioral data were included in analyses.