Table 1.

Core characteristics of reviewed studies.

Study	Ages	Total N	Non-ED siblings’ N	Genders	Exclusion of participants with an ED diagnosis	EDs	Design	Control
Maloney and Shepard-Spiro (23)	17–20	42	21	Male and Female	No past or present AN diagnosis	AN	Cross sectional	Population norms
Casper (24)	17–35	63	15	Female	No past or present AN diagnosis	AN	Cross sectional	Healthy controls
Garley and Johnson (25)	15–18	5	5	Female	No present AN diagnosis	AN	Qualitative	No control group
Stein et al. (26)	N.A	367	42	Male and Female	Not excluded	Various	Cohort study	Healthy controls
Strober et al. (27)	28a	905	264	Female	Not excluded	AN, BN	Cohort study	Healthy controls
Latzer et al., (28)	11–18	9	9	Female	N.A	AN	Qualitative	No control group
Wunderlich et al. (29)	12–34	252	84	Male and Female	N.A	Various	Cross sectional	Healthy controls
Benninghoven et al. (30)	21a	128	38	Male and Female	N.A	AN, BN	Cross sectional	Healthy controls
Dimitropoulos et al. (31)	25a	12	12	Male and Female	N.A	AN	Qualitative	No control group
Areemit et al. (32)	10–18	20	20	Male and Female	No past or present ED diagnosis	N.A	Mixed Methods	No control group
Amianto et al. (33)	26a	119	31	Male and Female	No past or present ED diagnosis	AN	Cross sectional	Healthy controls
Rozenstein et al. (34)	23a	95	21	Female	No past or present ED diagnosis	AN, BN	Cross sectional	Healthy controls
Rozenstein et al. (35)	23a	95	21	Female	No past or present ED diagnosis	AN, BN	Cross sectional	Healthy controls
Dimitropoulos et al. (36)	14–42	52	26	Male and Female	No past or present ED diagnosis	AN	Cross sectional	No control group
Halvorsen et al. (37)	13–35	67	21	Male and Female	No past or present ED diagnosis	AN	Descriptive	Population norms
Degortes et al. (38)	28a	267	32	Female	No past or present ED diagnosis	AN	Cross sectional	Healthy controls
Withers et al. (39)	12–18	20	20	Male and Female	N.A	AN	Qualitative	No control group
Latzer et al. (40)	13–31	60	30	Female	No past or present ED diagnosis	Various	Cross sectional	Healthy controls
Steinhausen et al. (41)	N.A	33,185	2,854	N.A	N.A	AN	Cohort study	Healthy controls
Callio and Gustafsson (42)	13–20	5	5	Male and Female	N.A	N.A	Qualitative	No control group
Jungbauer et al. (43)	12–52	16	16	Male and Female	N.A	AN	Qualitative	No control group
Langenberg et al. (44)	16a	55	55	Male and Female	N.A	AN	Cross sectional	Population norms
Yao et al. (45)	N.A	2,268,786	N.A	Male and Female	N.A	Various	Cohort study	Healthy controls
Van Langenberg et al. (46)	10–18	12	12	Male and Female	N.A	AN	Qualitative	No control group
Fjermestad et al. (47)	12–23	13	13	Male and Female	N.A	AN	Qualitative	No control group
Weinbach et al. (48)	15a	127	20	Female	No present AN diagnosis	AN	Cross sectional	Healthy controls

N.A, Information not available; ^aMean age.