Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1998-2-2
pubmed:abstractText
The regular fall-winter onset of seasonal affective disorder is believed to be related to seasonal changes in the environment. However, the high correlation among various environmental variables has made it difficult to distinguish which ones may play a causal role. Photoperiod should explain variations in onset risk across both latitude and day of the year because it varies as a function of only these 2 factors. In Study 1, the authors found this to be the case using data from 5 locations. Environmental factors that vary from year to year should explain variations in onset risk across both time of year and actual year. In Study 2, the authors examined data from 7 years at 1 location and failed to find evidence of this effect for daily hours of sunshine, mean daily temperature, and total daily radiation. Findings support photoperiod as being related to the onset of seasonal affective disorder.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0021-843X
pubmed:author
pubmed:issnType
Print
pubmed:volume
106
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
554-62
pubmed:dateRevised
2009-11-11
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Which environmental variables are related to the onset of seasonal affective disorder?
pubmed:affiliation
Institute of Psychology, Illinois Institute of Technology, Chicago 60616-3793, USA. myoung@charlie.cns.iit.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Meta-Analysis