Intergenerational social mobility and self-rated health in Canada

Structural and functional brain correlates of socioeconomic status across the life span: A systematic review

It is well-established that higher socioeconomic status (SES) is associated with improved brain health. However, the effects of SES across different life stages on brain structure and function is still equivocal. In this systematic review, we aimed to synthesise findings from life course neuroimaging studies that investigated the structural and functional brain correlates of SES across the life span. The results indicated that higher SES across different life stages were independently and cumulatively related to neural outcomes typically reflective of greater brain health (e.g., increased cortical thickness, grey matter volume, fractional anisotropy, and network segregation) in adult individuals. The results also demonstrated that the corticolimbic system was most commonly impacted by socioeconomic disadvantages across the life span. This review highlights the importance of taking into account SES across the life span when studying its effects on brain health. It also provides directions for future research including the need for longitudinal and multimodal research that can inform effective policy interventions tailored to specific life stages.

Intra-generational social mobility and mortality among older men in the Concord Health and Ageing in Men Project: A cohort study

Objectives

We examined associations between intra-generational social mobility (reflected in life-course socioeconomic trajectories) and mortality, among older men.

Methods

Data came from a prospective Australian community-based cohort of older men. Social mobility was defined by socioeconomic indicators from three points in the life-course: educational attainment (late adolescence-early adulthood), occupation (mid-life), and current sources of income (older age). We defined indicators of social mobility trajectory (6 categories; reflecting the direction of social mobility) and social mobility status (2 categories; mobile or non-mobile). We used Cox regression to examine associations with mortality, adjusting for age, country of birth, and living arrangement.

Results

We followed 1568 men (mean age 76.8, SD 5.4) for a mean duration of 9.1 years, with 797 deaths recorded. Moving upward was the predominant social mobility trajectory (36.0%), followed by mixed trajectories (25.1%), downward (15.1%), stable low (12.2%), stable high (7.6%), and stable middle (4.0%). Men with downward (Hazard ratio 1.58, 95% CI 1.13 to 2.19) and stable low socioeconomic trajectories (1.77, 1.25 to 2.50) had higher mortality risks than men with stable high socioeconomic trajectories, while men with upward trajectories had similar risks to those with stable high trajectories. 76.2% of the participants were classified as having mobile status; no associations were evident between binary social mobility status and mortality.

Discussions

These findings suggest cumulative and persistent exposure to disadvantaged socioeconomic conditions across the life-course, rather than social mobility, is associated with increased mortality. For each stage of the life-course, addressing socioeconomic disadvantage may reduce inequities in mortality.

Social mobility and mental health in Canada

OBJECTIVES

To investigate whether intergenerational mobility in education and income are associated with levels of psychological distress in Canada, a context in which rates of intergenerational mobility are higher than those of the United States but lower than those of Nordic countries.

METHODS

The data came from the Longitudinal and International Study of Adults (LISA) linked to tax records from the Canada Revenue Agency (N = 4100). Diagonal reference models were used to investigate whether educational mobility and income mobility were associated with levels of psychological distress in adulthood as assessed by the Kessler (K-10) scale. The models controlled for sociodemographic characteristics and were stratified by gender.

RESULTS

Although we did not find that mobility in general was associated with greater levels of psychological distress, we found that downward educational mobility in particular corresponded to higher levels of psychological distress (b = 0.15 with 95% CI = 0.00, 0.31) among men.

CONCLUSION

Overall, we found no strong evidence that social mobility in general is impactful for levels of psychological distress, but downward educational mobility in particular may have negative consequences for the mental health of men. In addition, a notable gradient between income and psychological distress in adulthood was observed for both women and men.

Is social origin, destination or mobility what matters to adult self-rated oral health?

OBJECTIVES

To evaluate the independent contributions of parental socioeconomic position (SEP), own SEP and social mobility to explain adult self-rated oral health.

METHODS

Data from 6633 participants in the 1970 British Cohort Study were analysed. Parental SEP at the age of 10 years (social origin) and own SEP at the age of 46 years (social destination) were indicated by the 7-class National Statistics Socioeconomic Classification (NS-SEC). The study outcome was self-rated oral health (SROH) at the age of 46 years. Diagonal reference models (DRMs) were used to parse out the effects of parental SEP, own SEP and intergenerational mobility from childhood to middle adulthood, after adjusting for demographic characteristics (sex, ethnicity, country and area of residence).

RESULTS

Overall, 23.1% of participants reported poor SROH. A baseline DRM, with no indicators of social mobility, showed that the contribution of own SEP to explain variations in SROH was higher than that of parental SEP. However, they became almost equal after indicators of social mobility were introduced. Downward mobility was associated with poor SROH (odds ratio: 1.24, 95% CI: 1.01-1.51), but upward mobility was not (1.01, 95% CI: 0.83-1.23). Also, short-range downward mobility and long-range downward mobility (moving 1 and 2+ social classes down in NS-SEC, respectively) were associated with poor SROH (1.26, 95% CI: 1.01-1.58 and 1.39, 95% CI: 1.06-1.83, respectively) whilst short-range upward mobility (1.04, 95% CI: 0.84-1.28) and long-range upward mobility (0.88, 95% CI: 0.67-1.14) were not.

CONCLUSIONS

The contributions of parental and own SEP were similar once social mobility was accounted for. Only downward mobility was associated with poor SROH, with new evidence that long-range mobility was more strongly associated with poor SROH than short-range mobility.