High prevalence of eating disorders not otherwise specified in northwestern Spain: population-based study

Purpose To determine the incidence and prevalence of eating disorder and its clinical forms. Methods All new ED cases of both genders, C15 years old, diagnosed from January 2005 to December 2009 were included. All patients who suffered from ED in December 2009 were included in the prevalence study. This is a prospective, population-based study. Cumulative incidence rates and 20-year prevalence were calculated. Results The ED incidence was 14.1 (95% CI 11.4–16.1) cases per 100,000 inhabitants per year, for AN, BN and EDNOS 3.1 (95% CI 2.00–4.1), 4.4 (95% CI 3.0–8.00) and 6.5 (95% CI 4.8–7.9), respectively. The incidence of ED at the four age-intervals, 15–24, 25–34, 35–45 and[45 years, revealed that the 25–34-year interval had the highest incidence; moreover, new cases were observed even in the [45-year interval. The prevalence of ED was 82.8 (95% CI 69.4–94.5) per 100,000 inhabitants, being for AN, BN and EDNOS 18.6 (95% CI 12.5–24.4), 25.7 (95% CI 18.5–32.5) and 38.3 (95% CI 29.4–46.5), respectively. Conclusions The incidence and prevalence of EDNOS are the highest in theEDcases; furthermore, new cases ofED are observed above the age of 45, which are remarkable data