Lundby revisited: first incidence of mental disorders 1947-1997.
OBJECTIVE
To investigate how first incidence of various mental disorders changed between the periods of 1947-1972 to 1972-1997 in the Lundby cohort.


METHODS
First-incidence rates of mental disorders were calculated for two 25 year periods and ten 5 year periods.


RESULTS
From 1947-1972 to 1972-1997 a decrease in almost all age- and sex-specific incidences of neurotic and organic brain disorders was observed, whereas incidence rates of psychotic disorders increased consistently in male subjects but decreased in most age intervals in female subjects. For both sexes the age-standardized 5 year period incidences of neurotic disorders decreased after 1972, fluctuated for psychotic disorders 1947-1997 and decreased steadily for organic disorders 1947-1997.


CONCLUSIONS
The reduction in neurotic and organic brain disorder incidences may be linked to structural changes in society and medical advances.
Bogren
Mats
M
Department of Clinical Sciences, Division of Psychiatry, Lundby Study, Lund University Hospital, SE-221 85 Lund, Sweden. mats.bogren@med.lu.se
Mattisson
Cecilia
C
Horstmann
Vibeke
V
Bhugra
Dinesh
D
Munk-Jørgensen
Povl
P
Nettelbladt
Per
P
D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D015331:Cohort Studies; D005260:Female; D049673:History, 20th Century; D006801:Humans; D015994:Incidence; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology* / Q000266:history*; D008875:Middle Aged; D019965:Neurocognitive Disorders / Q000453:epidemiology / Q000266:history; D009497:Neurotic Disorders / Q000453:epidemiology / Q000266:history; D015995:Prevalence; D011570:Psychiatry / Q000266:history*; D011618:Psychotic Disorders / Q000453:epidemiology / Q000266:history; D012424:Rural Population / Q000706:statistics & numerical data; D017678:Sex Distribution; D013548:Sweden / Q000453:epidemiology