Place and preference effects on the association between mental health and internal migration within Great Britain

Mental health selection: common mental disorder and migration between multiple states of deprivation in a UK cohort

OBJECTIVES

To assess whether the direction of movement along the social gradient was associated with changes in mental health status.

DESIGN

Longitudinal record-linkage study using a multistate model.

SETTING

Caerphilly, Wales, UK between 2001 and 2015.

PARTICIPANTS

The analytical sample included 10 892 (60.8% female) individuals aged 18-74 years.

PRIMARY AND SECONDARY OUTCOME MEASURES

Deprivation change at lower super output area level using the 2008 Welsh Index of Multiple Deprivation. Mental health was assessed in 2001 and 2008 using the Mental Health Inventory subscale of the short-form 36 V.2.

RESULTS

Mental health selection was shown whereby individuals with common mental health disorders were less likely to move to areas of lower deprivation but more likely to move to areas of greater deprivation.

CONCLUSION

Poor mental health seems to drive health selection in a similar way to poor physical health. Therefore, funding targeted at areas of higher deprivation should consider the demand to be potentially higher as individuals with poor mental health may migrate into that area.