Subjective social status: its determinants and its association with measures of ill-health in the Whitehall II study

Income inequality and physical and mental health: testing associations consistent with proposed causal pathways

OBJECTIVES

To test associations between individual health outcomes and ecological variables proposed in causal models of relations between income inequality and health.

DESIGN

Regression analysis of a large, nationally representative dataset, linked to US census and other county and state level sources of data on ecological covariates. The regressions control for individual economic and demographic covariates as well as relevant potential ecological confounders.

SETTING

The US population in the year 2000.

PARTICIPANTS

4817 US adults about age 40, representative of the US population.

MAIN OUTCOME MEASURES

Two outcomes were studied: self reported general health status, dichotomised as "fair" or "poor" compared with "excellent", "very good", or "good", and depression as measured by a score on the Center for Epidemiologic Studies depression instrument >16.

RESULTS

State generosity was significantly associated with a reduced odds of reporting poor general health (OR 0.84, 95%CI: 0.71 to 0.99), and the county unemployment rate with reduced odds of reporting depression (OR 0.91, 95%CI: 0.84 to 0.97). The measure of income inequality is a significant risk factor for reporting poor general health (OR 1.98, CI: 1.08 to 3.62), controlling for all ecological and individual covariates. In stratified models, the index of social capital is associated with reduced odds of reporting poor general health among black people and Hispanics (OR 0.40, CI: 0.18 to 0.90), but not significant among white people. The inequality measure is significantly associated with reporting poor general health among white people (OR 2.60, CI: 1.22 to 5.56) but not black people and Hispanics.

CONCLUSIONS

The effect of income inequality on health may work through the influence of invidious social comparisons (particularly among white subjects) and (among black subjects and Latinos) through a reduction in social capital. Researchers may find it fruitful to recognise the cultural specificity of any such effects.

Social status, stress, and adolescent smoking

PURPOSE

Adolescent smoking is associated with increased perceived stress and lower social status, but past research has not explored links between lower social status, stress, and smoking risk. This study examined whether the relation between social status and perceived stress could explain the association between lower social status and increased risk of smoking.

METHODS

Data were collected from 1021 non-Hispanic black and white adolescents participating in a longitudinal school-based study. Students completed a questionnaire and parents provided information on their highest level of education. Hierarchical logistic regression estimated the effects of parental education, subjective social status (SSS), and stress on smoking risk.

RESULTS

At baseline, students from families without a college-educated parent were at greater risk of current smoking (odds ratio [OR] some college = 1.98, 95% confidence interval [CI] = 1.06-3.67, and OR high school degree or less = 3.34, 95% CI = 1.67-6.60). Higher school SSS decreased risk of current smoking (OR = .73, 95% CI = .62-.87), and higher stress increased smoking risk (OR = 1.05, 95% CI = 1.01-1.08). There was no evidence that the effects of parental education were mediated through stress. At one-year follow-up, both lower school SSS and higher baseline stress were significantly associated with smoking initiation in preliminary models, but only baseline stress (OR = 1.06, 95% CI = 1.02-1.11) predicted smoking initiation in multivariable models.

DISCUSSION

These findings indicate that higher stress and lower social status increase risk of smoking, but that stress does not explain the association between lower social status and smoking. Therefore, stress reduction interventions may not alleviate social inequalities in teen smoking, but they do hold promise for youth smoking prevention.

Nutrient intake and psychological health in an elderly Chinese population

BACKGROUND

Associations between nutrition and cognitive impairment, and nutrition and depression, have been observed. Elderly people are at risk of under nutrition, and also have higher prevalence of cognitive impairment and depression.

OBJECTIVE

To examine the relationship between nutrient intake and psychological health in the elderly, adjusting for confounding factors.

SUBJECTS

Three thousand nine hundred and ninety-nine men and women aged 65 years and over living in the community, with approximately equal numbers in three age groups: 65-69, 70-74, 75+ years.

METHODS

Dietary intake was assessed using a 7-day food frequency questionnaire. Cognitive function was assessed by the cognitive part of the Community Screening Instrument for Dementia (CSID). Depression was assessed using the Geriatric Depression Scale (GDS). Information was also collected for confounding factors: demographics, educational level, socioeconomic status, medical history, smoking, alcohol intake, and physical activity. Logistic regression analyses were carried out to examine associations between lifestyle and dietary variables, and CSID and GDS, controlling for confounders.

RESULTS

Both CSID and GDS scores were associated with co-morbidity, demographic and socioeconomic factors. Few associations between lifestyle factors and CSID score were observed. Dietary factors inversely associated with GDS score include total fat intake, vitamins A, B2, B3, C, fibre, and vegetables. In terms of nutrient density, iron and isoflavone intake were additional factors.

CONCLUSION

Association exists between intake of various nutrients and psychological health independent of other confounding factors in the elderly population. A follow-up study of this cohort or interventional studies are needed to elucidate cause effect relationship.

The shape of the socioeconomic-oral health gradient: implications for theoretical explanations

OBJECTIVES

The nature of the relationship between status and health has theoretical and applied significance. To compare the shape of the socioeconomic -oral health relationship using a measure of relative social status (MacArthur Scale of Subjective Social Status) and a measure of absolute material resource (equivalised household income); to investigate the contribution of behaviour in attenuating the socioeconomic gradient in oral health status; and to comment on three hypothesised explanatory mechanisms for this relationship (material, psychosocial, behavioural).

METHODS

In 2003, cross-sectional self-report data were collected from 2,915 adults aged 43-57 years in Adelaide, Australia using a stratified cluster design. Oral conditions were (1) < 24 teeth, (2) 1+ impact/s reported fairly often or very often on the 14-item Oral Health Impact Profile; (3) fair or poor self-rated oral health, and (4) low satisfaction with chewing ability. Prevalence ratios and 95% confidence intervals (PR, 95%CI) were calculated from a logistic regression model. Covariates were age, sex, country of birth, smoking, alcohol use, body mass index, frequencies of toothbrushing and interdental cleaning.

RESULTS

There was an approximately linear relationship of decreasing prevalence for each oral condition across quintiles of increasing relative social status. In the fully adjusted model the gradient was steepest for low satisfaction with chewing (PR = 4.1, 95%CI = 3.0-5.4). Using equivalised household income, the shape more closely resembled a threshold effect, with an approximate halving of the prevalence ratio between the first and second social status quintiles for the adverse impact of oral conditions and fair or poor self-rated oral health. Adjustment for covariates did not attenuate the magnitude of PRs.

CONCLUSIONS

The nature of the relationship between social status and oral conditions differed according to the measure used to index social status. Perception of relative social standing followed an approximately straight-line relationship. In contrast, there was a discrete threshold of income below which oral health deteriorated, suggesting that the benefit to oral health of material resources occurs mostly at the lower end of the across the full socioeconomic distribution.

The association of smoking with perception of income inequality, relative material well-being, and social capital

The aim of this study is to examine the association of smoking status with income inequality, relative deprivation, perception of relative material well-being and community-level social capital, controlling for individual-level indicators of social capital, and common socio-economic variables. Data were from telephone interviews of approximately 126 residents selected at random (using the Electronic White Pages) from each of 22 local government areas (LGAs) in the Melbourne metropolitan region, Victoria, Australia (total n = 2762). We used logistic regression to assess the association of covariates with smoking status. Being a smoker was associated with a higher level of perceived income inequality, lower perception of relative material well-being and living in a community with a lower degree of trust and safety. While the cross-sectional design of the study does not allow causal inferences, the results imply that smoking is less prevalent in communities that are more egalitarian and have a higher stock of social capital.

Income inequality and population health: A review and explanation of the evidence

Whether or not the scale of a society's income inequality is a determinant of population health is still regarded as a controversial issue. We decided to review the evidence and see if we could find a consistent interpretation of both the positive and negative findings. We identified 168 analyses in 155 papers reporting research findings on the association between income distribution and population health, and classified them according to how far their findings supported the hypothesis that greater income differences are associated with lower standards of population health. Analyses in which all adjusted associations between greater income equality and higher standards of population health were statistically significant and positive were classified as "wholly supportive"; if none were significant and positive they were classified as "unsupportive"; and if some but not all were significant and supportive they were classified as "partially supportive". Of those classified as either wholly supportive or unsupportive, a large majority (70 per cent) suggest that health is less good in societies where income differences are bigger. There were substantial differences in the proportion of supportive findings according to whether inequality was measured in large or small areas. We suggest that the studies of income inequality are more supportive in large areas because in that context income inequality serves as a measure of the scale of social stratification, or how hierarchical a society is. We suggest three explanations for the unsupportive findings reported by a minority of studies. First, many studies measured inequality in areas too small to reflect the scale of social class differences in a society; second, a number of studies controlled for factors which, rather than being genuine confounders, are likely either to mediate between class and health or to be other reflections of the scale of social stratification; and third, the international relationship was temporarily lost (in all but the youngest age groups) during the decade from the mid-1980s when income differences were widening particularly rapidly in a number of countries. We finish by discussing possible objections to our interpretation of the findings.

The association of subjective social status and health in low-income Mexican-origin individuals in Texas

There is only limited research on subjective social status (SSS) and its effect on health in general and in minority US populations in particular. This study first investigates the determinants of SSS and the relationship between SSS and objective social status. It then explores the relationships of SSS to self-reported physical health, self-reported mental health, and self-rated health (SRH). The study population consists of Mexican-origin individuals living in low-income neighborhoods in Texas and grouped into acculturation categories based on nativity and use of the Spanish language. We also investigate the role of reference groups. Results indicate that there is no disjuncture between subjective and objective status in this population but that the less acculturated groups rank their social status based on different criteria than the more acculturated. People compare themselves mainly with those similar to them and average subjective status in the different acculturation groups accurately reflects the objective status of the group. Sociocultural factors, in particular perceived differences in opportunities, explain differences between subjective and objective status. Subjective status was associated with all health outcomes. When controlling for objective status, subjective status was associated with mental health and SRH but not with physical health. Objective status indicators were consistently associated with all health outcomes, indicating the prominence of objective socioeconomic status in affecting health in this low-income minority population. Sociocultural characteristics appear to mediate the effect of SSS on health. In particular, perceived victimization might mediate the effect of SSS on mental health.

Florida adults' oral cancer knowledge and examination experiences

OBJECTIVE

This study assessed awareness of oral cancer, knowledge of its major risk factors and clinical signs, and oral cancer examination experiences among Florida adults aged 40 years and older.

METHODS

A statewide random digit dial, computer assisted telephone survey was conducted in 2002. Data from 1,773 respondents were weighted to permit statewide estimates. Bivariate analyses were used to examine awareness and knowledge of oral cancer. Multiple logistic regression analysis was used to model past-year oral cancer examination experiences of Florida's adults.

RESULTS

In Florida, 15.5% of adults aged 40 years and older had never heard of oral cancer and another 40.3% reportedly knew little or nothing about it. About one-half of adults did not think oral white or red patches or bleeding could indicate oral cancer and 27.6% correctly identified three of oral cancer's major risk factors. After hearing an oral cancer exam described, just 19.5% of adults reported receiving one within the preceding 12 months. Blacks and Hispanics were significantly less likely than non-Hispanic whites to have received a recent oral cancer examination. Persons with low levels of education, those who lacked a regular dentist or source of preventive medical care, and adults who knew few or none of the clinical signs of oral cancer also were less likely to have received a recent oral cancer exam.

CONCLUSIONS

There is widespread lack of awareness and knowledge in Florida regarding oral cancer and low levels of reported examination, particularly among groups experiencing disproportionately high incidence and late stage diagnosis. Increasing awareness of this disease and promoting primary and secondary prevention may help lessen the disease burden in Florida and reduce racial disparities in its outcomes.

Does village inequality in modern income harm the psyche? Anger, fear, sadness, and alcohol consumption in a pre-industrial society

Researchers have found a positive association between income inequality and poor individual health. To explain the link, researchers have hypothesized that income inequality erodes community social capital, which unleashes negative emotions, stress, and stress behaviors that hurt health. Few studies have tested the hypothesized path. Here we estimate the association between (a) village income inequality and social capital, and (b) three distinct negative emotions (anger, fear, sadness) and one stress behavior (alcohol consumption). We use four quarters of panel data (2002-2003) from 655 adults in 13 villages of a foraging-farming society in the Bolivian Amazon (Tsimane'). We found that: (1) village income inequality was associated with more negative emotions but with less alcohol consumption, (2) social capital always bore a negative association with outcomes, and (3) results held up after introducing many changes to the main model. We conclude that village income inequality probably affects negative emotions and stress behaviors through other paths besides social capital because we conditioned for social capital. One such path is an innate dislike of inequality, which might have pre-human origins. Our prior research with the Tsimane' suggests that village income inequality bore an insignificant association with individual health. Therefore, village income inequality probably affects negative emotions and stress behaviors before undermining health.

Comparing objective and subjective status: gender and space (and environmental justice?)

The environmental justice literature has described differential health effects of environmental toxins and pollutants on people of different socio-economic status (SES) that may not always reflect differing levels of exposure. We offer four questions or contentions that together may contribute to understanding this conundrum and then present an empirical exploration of one of these questions: Does the relationship between SES and self-perceived status vary in space? Utilizing data from an original questionnaire survey of randomly selected adults conducted in twenty-five communities in British Columbia, Canada, a supplementary data set containing demographic and socio-economic characteristics of the communities themselves, and multilevel modelling techniques, this article describes relationships between objective and subjective measures of social status, by gender and in space. Our analysis contributes to the development of innovative environmental justice models by bringing some spatial sensitivity to interrelationships among these aspects of status.

Is subjective social status a more important determinant of health than objective social status? Evidence from a prospective observational study of Scottish men

Both subjective and objective measures of lower social position have been shown to be associated with poorer health. A psychosocial, as opposed to material, aetiology of health inequalities predicts that subjective social status should be a stronger determinant of health than objective social position. In a workplace based prospective study of 5232 Scottish men recruited in the early 1970s and followed up for 25 years we examined the association between objective and subjective indices of social position, perceived psychological stress, cardiovascular disease risk factors and subsequent health. Lower social position, whether indexed by more objective or more subjective measures, was consistently associated with an adverse profile of established disease risk factors. Perceived stress showed the opposite association. The main subjective social position measure used was based on individual perceptions of workplace status (as well as their actual occupation, men were asked whether they saw themselves as "employees", "foremen", or "managers"). Compared to foremen, employees had a small and imprecisely estimated increased risk of all cause mortality, whereas managers had a more marked decreased risk. The strongest predictors of increased mortality were father's manual as opposed to non-manual occupation; lack of car access and shorter stature, (an indicator of material deprivation in childhood). In the fully adjusted analyses, perceived work-place status was only weakly associated with mortality. In this population it appears that objective material circumstances, particularly in early life, are a more important determinant of health than perceptions of relative status. Conversely, higher perceived stress was not associated with poorer health, presumably because, in this population, higher stress was not associated with material disadvantage. Together these findings suggest that, rather than targeting perceptions of disadvantage and associated negative emotions, interventions to reduce health inequalities should aim to reduce objective material disadvantage, particularly that experienced in early life.

Does subjective social status predict health and change in health status better than objective status?

OBJECTIVE

To examine, among middle-aged individuals, if subjective socioeconomic status (SES) predicts health status and change in health status over time better than objective SES.

METHODS

Data are from the Whitehall II study, a prospective study of British civil servants. SES data are drawn from Phase 5 (1997-1999) of the study and health data from Phases 5 and 6 (2000-2001). Physical and mental component scores from the Short Form 36, the General Health Questionnaire, and self-rated health were used to assess health status. Multiple linear regressions were used to examine the relationship between SES and health and change in health status.

RESULTS

Complete data were available on 5486 people. Results show both measures of SES to be global measures of SES. Both measures of SES were significantly associated with health outcomes and with decline in health status over time. However, when both objective and subjective measures of SES are entered simultaneously in the model to predict change in health status, it was only the latter that continues to be significantly associated with health and changes in health.

CONCLUSIONS

Subjective SES is a better predictor of health status and decline in health status over time in middle-aged adults. These results are discussed in terms of three possible explanations: subjective SES is a more precise measure of social position, the results provide support for the hierarchy-health hypothesis, and the results could be an artifact of common method variance.

Perceived social status, language and identified dental home among Hispanics in Florida

BACKGROUND

The authors conducted a study to examine the extent to which perceived social status in communities and in U.S. society in general and primary language are associated with having a dental home among four Hispanic groups.

METHODS

The authors used random-digit-dialing technology to select a probability sample of Hispanic adults in Miami-Dade County, Fla., for a telephone-based survey. Trained interviewers administered the pretested survey instrument in Spanish or English. The authors used bivariate contingency tables and multiple logistic regression modeling to analyze the data.

RESULTS

Eight hundred ten adults participated, and their nationality groups were as follows: Cuba (n = 450), Nicaragua (n = 139), Colombia (n = 132) and Puerto Rico (n = 89). After controlling for nationality group, the authors found that respondents who perceived themselves to be at a higher social status in the United States than in their own community were significantly more likely to have a dental home; those who reported having a higher community status were significantly less likely to have a dental home compared with respondents who perceived their national and community social status to be equal. Respondents who primarily spoke a language other than English at home were less likely than those who primarily spoke English to have a dental home. Female respondents were more likely than male respondents to have a dental home. Respondents with dental insurance were more likely to have a dental home than were those without dental insurance.

CONCLUSIONS

Perceived social status and acculturation may influence whether Hispanics have a dental home. However, because of the sample design, the findings may not be generalizable to all Hispanic populations in Florida or the United States.

CLINICAL IMPLICATIONS

Reducing disparities in oral health status and in use of dental services among Hispanics relative to non-Hispanic whites may require attention to cultural factors such as language, community structure and immigrants' degree of acculturation.

Low socioeconomic status of the opposite sex is a risk factor for middle aged mortality

OBJECTIVES

To examine the relations between subjective social status, and objective socioeconomic status (as measured by income and education) in relation to male/female middle aged mortality rates across 150 sub-regions in Hungary.

DESIGN

Cross sectional, ecological analyses.

SETTING

150 sub-regions of Hungary.

PARTICIPANTS AND METHODS

12,643 people were interviewed in the Hungaro-study 2002 survey, representing the Hungarian population according to sex, age, and sub-regions. Independent variables were subjective social status, personal income, and education.

MAIN OUTCOME MEASURE

For ecological analyses, sex specific mortality rates were calculated for the middle aged population (45-64 years) in the 150 sub-regions of Hungary.

RESULTS

In ecological analyses, education and subjective social status of women were more significantly associated with middle aged male mortality, than were male education, male subjective social status, and income. Among the socioeconomic factors female education was the most important protective factor of male mid-aged mortality. Subjective social status of the opposite sex was significantly associated with mid-aged mortality, more among men than among women.

CONCLUSION

Pronounced sex interactions were found in the relations of education, subjective social status, and middle aged mortality rates. Men seem to be more vulnerable to the socioeconomic status of women than women to the effects of socioeconomic status of men. Subjective social status of women was an important predictor of mortality among middle aged men as was female education. The results suggest that improved socioeconomic status of women is protective for male health as well as for female health.

Racial group differences in help-seeking behaviors

The authors evaluated variations in help-seeking behaviors among Blacks and Whites and the role of cognitive-affective variables as mediators of these variations. Participants were 70 Black and 66 White community college students who completed the SCL-90-R (L. R. Derogatis, 1977, 1994), the Revised Multidimensional Health Locus of Control (T. Bekhuis et al., 1995), the Symptom Interpretation Questionnaire (J. M. Robbins & L. J. Kirmayer, 1991), and a measure of help-seeking behaviors and demographic information. Relative to White college students, Black college students significantly less frequently used psychological or social services and significantly more frequently used religious services. The authors accounted for group differences in religious help-seeking behaviors by beliefs in the power of God and by normalizing symptom attributions. The cognitive-affective variables that were studied did not account for differences in psychological help-seeking behaviors. The authors inferred that to better meet the needs of Black college students, collaboration between mental health services and religious services would likely be beneficial.

Subjective socioeconomic position, gender and cortisol responses to waking in an elderly population

Socioeconomic inequalities in morbidity and mortality exist, but the psychobiological pathways that link social status and health are less clear. It has previously been reported that socioeconomic status is inversely associated with the magnitude of the cortisol response to awakening (CAR) in men and women of working age. In the present study, we tested whether larger cortisol responses would be present in an older retired population, and whether the CAR differed between men and women. The extent to which adherence to saliva sample timing also affects the CAR was investigated. Ninety three men and women aged 65-80 years took saliva samples on waking, and then 10, 20, 30 and 60 min after waking. Subjective social status was assessed using the 'ladder' measure devised by Adler et al. (2000). Non-compliance was defined as a reported delay of 10 min or more between waking and taking the first saliva sample. Cortisol levels on waking were significantly higher in the non-compliant individuals, and the CAR was blunted compared with that of compliant participants. With non-compliant participants eliminated from the analyses, we found that low social status was associated with a larger CAR after adjusting for gender, waist/hip ratio, body mass index, smoking, time of waking, chronic illness, prescription medication, education and financial strain. No association was found between CAR and education or financial strain. Women also had significantly larger CARs, independent of socioeconomic position. The results highlight the importance of controlling for non-compliance and are consistent with the notion that higher socioeconomic position protects against stress-related activation of psychobiological pathways which may contribute to variation in disease risk evident in old age.

Black and white differences in cognitive function test scores: what explains the difference?

Several studies have reported that older black and Latino adults have lower cognitive function test scores than older white adults, but few have comprehensively examined reasons for score differences. This study evaluates whether differences in health and socioeconomic indicators, including literacy level, can explain differences in cognitive function test scores between older black and white adults.

Individualisation and inequalities in health: a qualitative study of class identity and health

It has been argued that social class, if not dead, is at least a 'zombie category' in contemporary Western society. However, epidemiological evidence shows that class-based inequalities have either persisted or widened, despite overall improvements in the health of Western populations. This article presents an exploratory qualitative study of the individualization of class identity and health conducted in a southern English city. Findings are presented in consideration of two competing argumentative positions around which participants worked to negotiate class identity and health. The first of these positions denied the significance of class for identity and health and was associated with the individualised heroic and stoic narratives of working class identity. The second position acknowledged the reality of class relations and their implications for health and identity, being associated with structurally and politically orientated narratives of middle class identity. In sum, resistance to class was associated with talk about individual, private experience whereas the acceptance of class was linked to discussion of health as a wider social or political phenomenon. This evidence lends qualified support to the individualization thesis: inequalities in health existing on structural or material levels are not simply reproduced, and indeed in some contexts may even juxtapose, accounts of social identity in interview and focus group contexts. Class identity and health are negotiated in lay talk as participants shift argumentatively back and forth between competing positions, and public and private realms, in the attempt to make sense of health and illness. The promotion of greater awareness and interest in health inequalities within wider public discourse may well help support attempts to tackle these injustices.