CHAPTER ONE
BACKGROUND TO THE STUDY
1.1    Introduction
Mental health, health status and socioeconomic status are important determinants of an individual’s wellbeing. There are thought to be important interactions between these dimensions of wellbeing, with causal links running in both directions. Poor health and poor mental health can reduce earnings ability, through their effects on education and employment, and poverty can lead to lower educational attainment, poorer physical health and depression (Ardington and Case, 2010).
Das et al. (2007) examine the correlates of mental health in five developing countries, finding that being older, female, widowed, and in poor physical health are consistently related to poorer mental health outcomes. However, their reading of their evidence on the relationship between socio-economic status (SES) and mental health is mixed. They find education to be positively associated with better mental health in a majority (but not all) of the countries that they study. Witoelar et al (2009) analyse data from the fourth wave of the Indonesian Family Life Survey and find that education is protective against depression among Indonesians aged 45 and older but, controlling for education, they find no association between per capita expenditure and mental health for this group.
A survey of 11 smaller community based studies in six low and middle income countries finds a negative association between education and common mental disorders in all but one study (Patel and Kleinman 2003). Results for other indicators of socioeconomic status such as employment and income were more mixed. In two localized South African studies, Case and Deaton (2009) find different aspects of SES protect in different ways: in their sites, education appears to protect health status, but has little effect on anxiety or depression, while assets protect against depression, but not against poor health.
One of the most consistent findings in the study of mental health in both developed and developing countries is that the risk of depression increases with age. Although the relationship between socioeconomic status and mental health has received considerable attention in the literature, particularly among the elderly, there is very little research that directly addresses whether the correlates of depression change as people grow older (Ardington and Case, 2010).