Social inequalities in health anxiety: A systematic review and meta-analysis

The association between a low socioeconomic status and poor health, also known as social inequalities in health, has been shown in numerous studies. This also applies to most mental illnesses, such as somatization or anxiety disorders. It is unclear, however, whether social inequalities are evident in health anxiety as well. Therefore, this review and meta-analysis systematically examines social inequalities in health anxiety.

A systematic literature search was conducted covering all studies published until August 2021. The databases PubMED, Web of Science, PsycINFO, and PSYNDEX were screened to identify quantitative studies using validated tools to measure health anxiety and examining the association with socioeconomic status. Meta-analytic methods were applied by using random-effect models. The study quality was assessed with the Effective Public Health Practice Project Quality Assessment Tool.

Overall, 37 studies were eligible for meta-analysis. Effect sizes of 27 studies using screening scales and 10 studies using diagnostic interviews to measure health anxiety were calculated separately. Meta-analyses revealed a significant association between socioeconomic status and health anxiety (r - 0.14, 95%-CI -0.18 to -0.09 (screening scales) and OR 0.63, 95%-CI 0.43 to 0.92 (diagnostic interviews)), indicating a lower risk for health anxiety in people with higher socioeconomic status.

Findings suggest that the health-related disadvantage of socially deprived people is also evident regarding health anxiety. This should be considered in programs to reduce social inequalities in health. PROSPERO registration number CRD42021237550.