Long-term survival of patients with anorexia nervosa: a population-based study in Rochester, Minn.
OBJECTIVE
To estimate long-term survival of unselected patients with anorexia nervosa from Rochester, Minn.


METHODS
In this population-based retrospective cohort study, all 208 Rochester residents who presented with anorexia nervosa (193 women and 15 men) for the first time from 1935 through 1989 were monitored for up to 63 years. Subsequent survival was compared with that expected for Minnesota white residents of similar age and sex, and standardized mortality ratios were determined on the basis of age- and sex-specific death rates for the US population in 1987.


RESULTS
Survival was not worse than expected in this cohort (P = .16). The estimated survival 30 years after the initial diagnosis of anorexia nervosa was 93% (95% confidence interval, 88%-97%) compared with an expected 94%. During 5646 person-years of follow-up (median, 22 years per patient), 17 deaths occurred (14 women and 3 men) compared with an expected 23.7 deaths (standardized mortality ratio, 0.71; 95% confidence interval, 0.42-1.09). One woman died of complications of anorexia nervosa, 2 women committed suicide, and 6 patients (5 women and 1 man) died of complications of alcoholism. Other causes of death were not increased.


CONCLUSIONS
Long-term survival of Rochester patients with anorexia nervosa did not differ from that expected. This finding suggests that overall mortality was not increased among the spectrum of cases representative of the community.
Korndörfer
Sergio R
SR
Department of Psychiatry and Psychology, Mayo Clinic, Rochester, Minn 55905, USA.
Lucas
Alexander R
AR
Suman
Vera J
VJ
Crowson
Cynthia S
CS
Krahn
Lois E
LE
Melton
L Joseph
LJ
D000293:Adolescent; D000328:Adult; D000856:Anorexia Nervosa / Q000401:mortality*; D002423:Cause of Death; D002648:Child; D015331:Cohort Studies; D016001:Confidence Intervals; D003625:Data Collection / Q000379:methods; D016208:Databases, Factual; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008910:Minnesota / Q000453:epidemiology; D016016:Proportional Hazards Models; D012189:Retrospective Studies; D012737:Sex Factors; D015996:Survival Rate; D044465:White People / Q000706:statistics & numerical data