The Iowa prospective longitudinal study of recent-onset psychoses.
In this article, the methods of a prospective longitudinal study of recent-onset psychoses are described. Methodological issues that may be common to studies employing a similar design are discussed in the context of the rationale behind this study's strategies. Particular attention is paid to statistical strategies that maximally exploit longitudinal data.
Flaum
M A
MA
Department of Psychiatry, University of Iowa College of Medicine, Iowa City.
Andreasen
N C
NC
Arndt
S
S
D006801:Humans; D008279:Magnetic Resonance Imaging; D011379:Prognosis; D011446:Prospective Studies; D011569:Psychiatric Status Rating Scales; D011618:Psychotic Disorders / Q000503:physiopathology*; D011698:Pursuit, Smooth; D012107:Research Design; D013997:Time Factors