Increasing social inequalities in health in the United States and elsewhere, coupled with growing inequalities in income and wealth, have refocused attention on social class as a key determinant of population health. Routine analysis using conceptually coherent and consistent measures of socioeconomic position in US public health research and surveillance, however, remains rare. This review discusses concepts and methodologies concerning, and guidelines for measuring, social class and other aspects of socioeconomic position (e.g. income, poverty, deprivation, wealth, education). These data should be collected at the individual, household, and neighborhood level, to characterize both childhood and adult socioeconomic position; fluctuations in economic resources during these time periods also merit consideration. Guidelines for linking census-based socioeconomic measures and health data are presented, as are recommendations for analyses involving social class, race/ethnicity, and gender. Suggestions for research on socioeconomic measures are provided, to aid monitoring steps toward social equity in health.

Measuring Social Class in US Public Health Research: Concepts, Methodologies, and Guidelines

OBJECTIVE: To review the relationship between literacy and health outcomes DATA SOURCES: We searched MEDLINE, Cumulative Index to Nursing and Allied Health (CINAHL), Educational Resources Information Center (ERIC), Public Affairs Information Service (PAIS), Industrial and Labor Relations Review (ILLR), PsychInfo, and Ageline from 1980 to 2003 STUDY SELECTION: We included observational studies that reported original data, measured literacy with any valid instrument, and measured one or more health outcomes Two abstractors reviewed each study for inclusion and resolved disagreements by discussion DATA EXTRACTION: One reviewer abstracted data from each article into an evidence table; the second reviewer checked each entry The whole study team reconciled disagreements about information in evidence tables Both data extractors independently completed an 11-item quality scale for each article; scores were averaged to give a final measure of article quality DATA SYNTHESIS: We reviewed 3,015 titles and abstracts and pulled 684 articles for full review; 73 articles met inclusion criteria and, of those, 44 addressed the questions of this report Patients with low literacy had poorer health outcomes, including knowledge, intermediate disease markers, measures of morbidity, general health status, and use of health resources Patients with low literacy were generally 15 to 3 times more likely to experience a given poor outcome The average quality of the articles was fair to good Most studies were cross-sectional in design; many failed to address adequately confounding and the use of multiple comparisons CONCLUSIONS: Low literacy is associated with several adverse health outcomes Future research, using more rigorous methods, will better define these relationships and guide developers of new interventions

/pdf/literacy-and-health-outcomes-4pmopsjgz6.pdf

Literacy and health outcomes

Skilled attendance at childbirth is crucial for decreasing maternal and neonatal mortality, yet many women in low- and middle-income countries deliver outside of health facilities, without skilled help. The main conceptual framework in this field implicitly looks at home births with complications. We expand this to include "preventive" facility delivery for uncomplicated childbirth, and review the kinds of determinants studied in the literature, their hypothesized mechanisms of action and the typical findings, as well as methodological difficulties encountered. We searched PubMed and Ovid databases for reviews and ascertained relevant articles from these and other sources. Twenty determinants identified were grouped under four themes: (1) sociocultural factors, (2) perceived benefit/need of skilled attendance, (3) economic accessibility and (4) physical accessibility. There is ample evidence that higher maternal age, education and household wealth and lower parity increase use, as does urban residence. Facility use in the previous delivery and antenatal care use are also highly predictive of health facility use for the index delivery, though this may be due to confounding by service availability and other factors. Obstetric complications also increase use but are rarely studied. Quality of care is judged to be essential in qualitative studies but is not easily measured in surveys, or without linking facility records with women. Distance to health facilities decreases use, but is also difficult to determine. Challenges in comparing results between studies include differences in methods, context-specificity and the substantial overlap between complex variables. Studies of the determinants of skilled attendance concentrate on sociocultural and economic accessibility variables and neglect variables of perceived benefit/need and physical accessibility. To draw valid conclusions, it is important to consider as many influential factors as possible in any analysis of delivery service use. The increasing availability of georeferenced data provides the opportunity to link health facility data with large-scale household data, enabling researchers to explore the influences of distance and service quality.

/pdf/still-too-far-to-walk-literature-review-of-the-determinants-2vt2nanmuk.pdf

Still too far to walk: literature review of the determinants of delivery service use.

OBJECTIVES: This study examined the relationship of functional health literacy to self-reported health and use of health services. METHODS: Patients presenting to two large, urban public hospitals in Atlanta, Ga, and Torrance, Calif, were administered a health literacy test about their overall health and use of health care services during the 3 months preceding their visit. RESULTS: Patients with inadequate functional health literacy were more likely than patients with adequate literacy to report their health as poor. Number of years of school completed was less strongly associated with self-reported health. Literacy was not related to regular source of care or physician visits, but patients in Atlanta with inadequate literacy were more likely than patients with adequate literacy to report a hospitalization in the previous year. CONCLUSIONS: Low literacy is strongly associated with self-reported poor health and is more closely associated with self-reported health than number of years of school completed.

The relationship of patient reading ability to self-reported health and use of health services

Objective. To examine the trend of obe- sity-associated diseases in youths and related economic costs. Methods. Using a multiyear data file of the National Hospital Discharge Survey, 1979 -1999, we analyzed the changes in obesity-associated diseases and economic costs in youths (6 -17 years of age) over time. Diabetes, obesity, sleep apnea, and gallbladder disease were exam- ined to explore the trend of the disease burden. Other obesity-associated diseases for which obesity was listed as a secondary diagnosis were also analyzed. Obesity- associated hospital costs were estimated from the dis- charges with obesity listed as a principal or secondary diagnosis. Results. From 1979 -1981 to 1997-1999, the percentage of discharges with obesity-associated diseases increased. The discharges of diabetes nearly doubled (from 1.43% to 2.36%), obesity and gallbladder diseases tripled (0.36% to 1.07% and 0.18% to 0.59%, respectively), and sleep apnea increased fivefold (0.14% to 0.75%). Ninety-six percent of discharges with a diagnosis of obesity listed obesity as a secondary diagnosis. Asthma and some mental disorders were the most common principal diagnoses when obesity was listed as a secondary diagnosis. Obesity-associated annual hospital costs (based on 2001 constant US dollar value) increased more than threefold; from $35 million (0.43% of total hospital costs) during 1979 -1981 to $127 million (1.70% of total hospital costs) during 1997-1999. Conclusions. Among all hospital discharges, the pro- portion of discharges with obesity-associated diseases has increased dramatically in the past 20 years. This increase has led to a significant growth in economic costs. These findings may reflect the impact of increasing prev- alence and severity of obesity. Diet and physical activity interventions should be developed for weight loss and prevention of weight gain in youths. Pediatrics 2002; 109(5). URL: http://www.pediatrics.org/cgi/content/full/ 109/5/e81; children, adolescents, obesity, hospitalization, comorbidities, costs.

https://pediatrics.aappublications.org/content/pediatrics/109/5/e81.full.pdf

Economic Burden of Obesity in Youths Aged 6 to 17 Years: 1979–1999

In The Health of Nations Sagan described studying historical data collected from almost 150 nations spanning the gamut from pre-modem to highly complex post modem societies searching for the characteristics that would best predict life expectancy. After applying statistical tests to determine which factor(s) appeared to be causal he found that "by far the most consistently powerful predictor of life expectancy was the prevalence of literacy." The association of literacy and health has been reported repeatedly in analyses of the post World War II decline of mortality in developing countries and of mortality differentials within their populations. The strength and significance of this relationship appear similar across cultural regions and time. But uncertainties remain. What is the direction of causation? Are health status and literacy jointly determined by other societal forces? What are the mechanisms through which literacy influences health? (excerpt)

https://www.annualreviews.org/doi/pdf/10.1146/annurev.pu.10.050189.001433

Literacy and Health Status in Developing Countries

A general theory on the relationship between water supply and sanitation investments and health, the threshold-saturation theory, is proposed. The theory takes into consideration three variables: health status, socioeconomic status, and sanitation level, and attempts to encompass, for the first time in one general theoretical framework, numerous conflicting empirical findings. The two-tiered S-shaped logistic form of the relationship that is proposed assumes that at the lower end of the socioeconomic spectrum there is a threshold below which investments in community water supplies and/or excreta disposal facilities alone result in little detectable improvement in health status. Similarly, at the higher end of the socioeconomic scale, it is suggested that a point of saturation is reached beyond which further significant health benefits cannot be obtained by investments in conventional community sanitation facilities.

A preliminary attempt to validate this model using published data on sanitation level (defined as access to water supply), life expectancy, and adult literacy rates, for 65 developing countries, appears to provide preliminary support for the threshold saturation theory but further empirical validation is required before a quantitative predictive model can be developed.

Effect of investments in water supply and sanitation on health status: a threshold-saturation theory.

The impact on vitamin A deficiency (VAD), wasting malnutrition, and excessive childhood mortality of two alternative approaches-nutrition education and mega-dose capsule distribution (6-12-month-olds: 100,000 IU; 1-5-year-olds: 200,000 IU)-in communities in Nepal are compared. Approximately 40,000 children from 75 locations in seven districts in two ecological settings (lowland and hills) took part in the study and were randomly allocated to intervention cohorts or a control group. At 24 months after the implementation of the project the reduction of risk for xerophthalmia was greater among children whose mothers were able to identify vitamin-A-rich foods (relative risk (RR) = 0.25; 95% confidence interval (CI) = 0.10-0.62) than among the children who received mega-dose capsules (RR = 0.59; 95% CI = 0.41-0.84). The risk of mortality at 2 years was reduced for both the nutrition education (RR = 0.64; 95% Cl = 0.48-0.86) and capsule distribution (RR = 0.57; 95% CI = 0.42-0.77) cohorts. The nutrition education programme was, however, more expensive to deliver than the capsule distribution programme. High rates of participation for children in the supplementation programme were achieved quickly. The nutrition education messages also spread rapidly throughout the study population (regardless of intervention cohort assignment). Practices, however, were slower to change. In communities where maternal literacy was low and channels of communication were limited the capsule distribution programme appeared to be more economical. However, there are economies of scale for nationwide education programmes that do not exist for capsule distribution programmes. Although nutrition education provides economies of scale and the promise of long-term sustainability, a comprehensive national programme requires both dietary supplementation and nutrition education components.

Impact of nutrition education and mega-dose vitamin A supplementation on the health of children in Nepal.

/pdf/interrelation-between-health-and-population-observations-3d05jjzks7.pdf

Interrelation between health and population: Observations derived from field experiences

https://deepblue.lib.umich.edu/bitstream/handle/2027.42/24048/0000297.pdf;sequence=1

Robert N. Grosse

Papers

Literacy and Health Status in Developing Countries

Effect of investments in water supply and sanitation on health status: a threshold-saturation theory.

Impact of nutrition education and mega-dose vitamin A supplementation on the health of children in Nepal.

Interrelation between health and population: Observations derived from field experiences

Correlates of life expectancy in less developed countries