The epidemiology and classification of bulimia nervosa.
We sought to determine whether there was empirical support for the diagnostic thresholds of DSM-IV bulimia nervosa (BN) and whether an empirically derived typology resembled the diagnostic categories of DSM-IV.
Detailed information about bulimic behaviours were assessed via personal interview in a population-based sample of 1897 Caucasian female twins.
We assessed the lifetime prevalence of the component bulimic behaviours and DSM-IV and DSM-III-R BN.
Latent class analysis of nine separate bulimic symptoms was used to develop an empirical typology of bulimic behaviour.
Although the lifetime prevalences of bingeing (23.6%) and vomiting (4.8%) were relatively common, DSM-IV BN was distinctly uncommon (0.5%). The criterion that specified the frequency and duration of bingeing and vomiting was an important limiting condition.
Analysis of alternative thresholds found little support for the DSM-IV thresholds requiring an average of twice per week for 3 months.
Latent class analysis yielded an interpretable four class solution that had little overlap with the DSM-IV typology.
As in other studies of unselected samples of women, the lifetime presence of bulimic behaviours are relatively high.
Our results suggest that the DSM-IV approach to categorizing bulimic behaviour inadequately captures the spectrum of lifetime bulimic behaviours in the general population.
Mots-clés Pascal : Boulimie, Prévalence, Epidémiologie, Santé mentale, Critère, Diagnostic, Diagnostic and Statistical Manual IV, Classification, Homme, Femelle, Trouble comportement alimentaire
Mots-clés Pascal anglais : Bulimia, Prevalence, Epidemiology, Mental health, Criterion, Diagnosis, Diagnostic and Statistical Manual IV, Classification, Human, Female, Eating disorder
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0349569
Code Inist : 002B18C01B. Création : 27/11/1998.