The most commonly used screening test in the detection of anorexia nervosa is the Eating Attitudes Test ( EAT).(8) Doubt has, however, been expressed about the predictive value of the EAT in the very populations where its use was introduced, as only a small percentage of the EAT-screened positive scores will have an actual eating disorder.(9) Thus, the EAT has limited usefulness in surveys for detecting anorexia nervosa unless it is supplemented by detailed clinical assessments. A survey depending on initial screening by questionnaire also runs the risk of failing to detect cases of anorexia nervosa as it was found that patients currently receiving active treatment were among the non-respondents, presumably because they wished to conceal their disorder. (19
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