Table S1. Socio-Demographic Characteristics of the Sample by Eating Disorders (ED) Diagnoses

Table S1. Socio-demographic characteristics of the sample by eating disorders (ED) diagnoses and behaviours

ED diagnoses / p (2)
AN-R / AN-BP / BN
N(%) / N(%) / N(%)
Total / 115 (46.6) / 93 (37.7) / 39 (15.8)
Ethnicity (N=123)
White Caucasian / 59 (100) / 38 (100) / 26 (100) / N/A
Area of residence (N=242)
Rural / 33 (29.2) / 14 (15.4) / 11 (29.0) / 0.02
Urban / 36 (31.9) / 31 (34.1) / 18 (47.4)
Town / 44(38.9) / 46(50.6) / 9(23.7)
Contraceptive use (N=229)
No / 45 (42.9) / 33 (37.9) / 8 (21.6) / 0.07
Yes / 60 (57.1) / 54 (62.1) / 29 (78.4)
Mean (SD) / Mean (SD) / Mean (SD) / P(F)
Age (N=243) / 27.3 (10.4) / 28.1 (9.1) / 28.6 (10.3) / 0.7
Lowest BMI ever (N=242) / 14.1 (2.6) / 14.1 (2.4) / 19.0 (2.0) / <0.001
Highest BMI ever (N=239) / 21.3 (3.3) / 22.2 (3.6) / 24.6 (3.8) / <0.001
Age of onset (N=234) / 16.0 (4.2) / 16.5 (3.7) / 17.3 (3.9) / 0.2

Table S1 (continued)

ED behaviours
Variable / Binge-eating and any Purging Mean (SD) / Any purging Mean (SD)
Yes (N=133) / No (N=110) / P / Yes (N=169) / No (N=74) / P
Age / 28.7 (9.2) / 26.8 (10.5) / 0.1 / 28.4 (10.8) / 26.4 (10.8) / 0.1
Lowest BMI ever / 15.7 (3.2) / 13.8 (2.3) / <0.001 / 15.3 (3.1) / 13.9 (2.4) / <0.001
Highest BMI ever / 23.3 (3.8) / 20.8 (2.9) / <0.001 / 22.9 (3.8) / 20.6 (2.9) / <0.001
Age of onset / 16.5 (3.3) / 16.3 (4.6) / 0.8 / 16.3 (3.5) / 16.7 (4.9) / 0.5
Variable / Yes N(%) / No N(%) / P / Yes N(%) / No N(%) / P
Ethnicity
White Caucasian / 74 (100) / 49 (100) / 85 (100) / 38 (100)
Area of residence
Rural / 32 (23.7) / 26 (23.7) / 38 (22.6) / 20 (27.03)
Urban / 52 (38.5) / 33 (29.5) / 0.4 / 62 (36.9) / 23 (31.1) / 0.6
Town / 48 (35.6) / 51 (45.5) / 68 (40.5) / 31 (41.9)
Contraceptive use
No / 43 (33.3) / 43 (43.0) / 55 (34.0) / 31 (46.3)
Yes / 86 (66.7) / 57 (57.0) / 0.1 / 107 (66.1) / 36 (53.7) / 0.08

Notes: AN-R, Anorexia-Restrictive; AN-BP,Anorexia-Binge Purging; BN, Bulimia Nervosa. BMI, body mass index.