To examine the association between baseline functional status and any emotional disorder at follow-up, after controlling for potential confounders. The effect modification of previous mental disorders and physical conditions was assessed.
Data are from the Netherlands Mental Health Survey and Incidence Study-2, a representative population-based, 3-year longitudinal study completed in 2012. Individuals at risk of a new or a recurrent emotional disorder were selected at baseline (n = 4,574). The appearance of any emotional disorder between waves, assessed with the Composite International Diagnostic Interview 3.0, was the outcome. Functional status at baseline was assessed with the physical (PCS) and mental component summary (MCS) of the Short Form-36 Health Survey version 1 and with the number of disability days collected with the World Health Organization Disability Assessment Scale II. Multivariable logistic regression models adjusted by socio-demographic and lifestyle factors were fitted. Interaction terms between previous mental disorders or physical conditions with the predictors were tested.
At baseline, 12.1 % had low PCS score, 5.9 % had low MCS score and 30.3 % reported any disability days. The incidence of emotional disorders in 3 years was 9.1 % [95 % confidence interval (95 % CI) 8.1–10.3]. Having low PCS or low MCS at baseline [PCS adjusted OR (aOR) 1.51, p value = 0.02; MCS aOR 1.90, p = 0.002] or reporting more than 15 disability days (aOR 1.63, p = 0.035) was significantly associated with 3-year incidence of emotional disorders. Having a previous mental disorder modified the relationship between MCS and incidence. Among those with a low MCS score, a previous mental disorder considerably increased the risk of incident emotional disorders (aOR 2.72, p = <0.001).
Low functional status is an independent risk factor for developing emotional disorders in the general population. Appropriate identification followed by early intervention may contribute to reduce their associated burden.
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The authors would like to thank Carlos García Forero for his support in statistical matters and Dave Mc Farlane for his help in improving the understanding of the manuscript. The Netherlands Mental health Survey and Incidence Study-2 (NEMESIS-2) is conducted by the Netherlands Institute of Mental Health and Addiction in Utrecht. Financial support has been received from the Ministry of Health, Welfare and Sport, with supplemental support from the Netherlands Organization for Health Research and Development (ZonMw) and the Genetic Risk and Outcome of Psychosis (GROUP) investigators. Gabriela Barbaglia received support from the Spanish Ministry of Science and Innovation “Rio Hortega grant” (CM 10-00099), Spain.
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Barbaglia, G., ten Have, M., van Dorsselaer, S. et al. Low functional status as a predictor of incidence of emotional disorders in the general population. Qual Life Res 24, 651–659 (2015). https://doi.org/10.1007/s11136-014-0803-8
- Functional status
- Emotional disorders