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Original Article
- Association of participation in the Northern Finland Birth Cohort 1986 with mental disorders and suicidal behaviour
- Martta Kerkelä, Mika Gissler, Juha Veijola
- Epidemiol Health. 2022;44:e2022005. Published online January 3, 2022
- DOI: https://doi.org/10.4178/epih.e2022005
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AbstractOBJECTIVES
In prospective follow-up studies, participants are normally contacted during the follow-up period. Even though the idea is not to intervene, the studies conducted during follow-up may affect the target population. Our hypotheses were that participation in the prospective Northern Finland Birth Cohort 1986 study (NFBC 1986) increased the use of mental health services and reduced suicidal behaviour due to participation in follow-up studies.METHODSThe NFBC 1986 study covered people with an expected date of birth between July 1985 and June 1986 in northern Finland (n=9,396). The participants of the NFBC 1986 were followed since the antenatal period with follow-ups including clinical examinations. The comparison cohort comprised people born in the same area in 1987 (n=8,959), who were not contacted. Registry data on psychiatric treatment, suicide attempts, and suicides were available. Crude risk ratios (RRs) and adjusted (for marital status and education) Mantel-Haenszel RRs were reported.RESULTSNo increase in mental disorders were found in NFBC 1986 compared to comparison cohort. In the crude RR analysis of female participants, a lower risk for suicide attempts was found (RR, 0.67; 95% confidence interval, 0.49 to 0.92; p=0.011).CONCLUSIONSThe results did not support our first hypothesis regarding the increased use of mental health services in the NFBC 1986 cohort. However, our second hypothesis gained some support as female participants of the NFBC 1986 had a lower risk of suicide attempts, although it was not due to a higher number of participants receiving psychiatric treatment. -
SummaryKey Message
Female members of the longitudinal Northern Finland Birth Cohort 1986 study did have less psychiatric diagnosis in several diagnosis classes than comparison cohort, which may indicate that different follow-up studies conducted in the prospective birth cohort studies may affect to the study population.Citations
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- Association between participation in the Northern Finland Birth Cohort 1966 study and use of psychiatric care services
Martta Kerkelä, Mika Gissler, Tanja Nordström, Juha Veijola, Silva Ibrahimi
PLOS ONE.2023; 18(3): e0282714. CrossRef - Association between participation in the Northern Finland Birth Cohorts and cardiometabolic disorders
Martta Kerkelä, Mika Gissler, Tanja Nordström, Olavi Ukkola, Juha Veijola
Annals of Medicine.2023; 55(1): 1123. CrossRef
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