A lifetime history of AN was assessed in STAGE using an expanded, on-line Structured Clinical Interview for DSM-IV (SCID)-based instrument (First et al., 1997). AN was considered present if the following criteria were met: 1) having a period of time when the respondent weighed much less than people thought she should weigh and had a BMI < 18.55; 2) being slightly, somewhat, very, or extremely afraid of gaining weight or becoming fat; and 3) feeling slightly, somewhat, very, or extremely fat when at low weight. Amenorrhea, Criterion D, was not required (Dellava et al., 2011) and is consistent with DSM-5.
