Assessing the contribution of the dental care delivery system to oral health care disparities

Comparing income-related inequality on health service utilisation between older rural-to-urban migrant workers and older rural residents in China: a cross-sectional study

OBJECTIVES

This study quantifies income-related inequalities in health service utilisation of older rural-to-urban migrant workers, by comparison with older rural residents, and identify with factors giving rise to the inequalities.

SETTING

Nationally representative survey conducted in 29 provinces, municipalities and autonomous regions of China.

PARTICIPANTS

952 older rural-to-urban migrant workers and 2676 older rural residents were identified for further analysis.

MAIN OUTCOME MEASURES

The probability of 2 weeks outpatient utilisation and inpatient utilisation.

DESIGN

Coarsened exact matching was used to control the confounding factors between older rural-to-urban migrant workers and their rural counterparts. Concentration index was used to depict the inequality in health service utilisation, and it can be decomposed proportionally into contributions.

RESULTS

The concentration indices of 2 weeks outpatient utilisation of two groups were -0.2061 (95% CI: 0.0193 to 0.1364) and -0.2041 (95% CI: 0.0594 to 0.1469), respectively. The concentration indices of inpatient of two groups were -0.0024 (95% CI: -0.0047 to 0.0639) and -0.1412 (95% CI: 0.0235 to 0.1125), respectively. The contributors of the inequality of 2 weeks outpatient utilisation of two groups were poor self-assessed health (SAH) status and richest group. The contributors of the inequality of inpatient utilisation of the rural elderly were poor SAH, fair SAH and sense of happiness. The horizontal inequality indices for 2 weeks outpatient of two groups were 0.1321 and -0.0.992, respectively. The horizontal inequality indices for the inpatient of two groups were -0.0032 and -0.0396, respectively.

CONCLUSIONS

The results illustrated the existence of a socioeconomic gradient in health service utilisation between older rural-to-urban migrant workers and older rural residents. Our studies provided evidences to take full account of the health service needs, contributing to more reliable understandings of inequalities in the health service utilisation. The results may be referential to identify policy priorities conducive to the health policy reform in the process of active ageing in China.

Cost Barriers to Health Services in U.S. Adults Before and After the Implementation of the Affordable Care Act

Background: The Affordable Care Act (ACA) was passed in 2010 and implemented in 2014 in the United States (U.S.). It was partly intended to reduce the cost burden to health coverage and care.

Objective: To determine if ACA implementation reduced the odds of experiencing cost barriers to needed healthcare services for vulnerable groups.

Methodology: National Health Interview Survey Data from the Integrated Public Use Microdata Set (2011-2013; 2015-2017) were used to examine cost barriers to primary health, mental health, dental services, and prescription medications particularly for adults living in poverty, those of color, and unmarried individuals before and after implementation of the ACA. The study sample included 112,245 individuals, representing an annual average of 138 million adults (aged 26 to 64 years of age), including 59,367 survey respondents from 2011 to 2013 and 52,878 from 2015 to 2017.

Results: Pre/post-ACA, cost barriers to medical care decreased from 9.6% to 7.0% of adults, mental care from 3.0% to 2.4%, dental care 15.0 to 11.7%, and prescriptions from 9.9% to 7.0% (all comparisons p<.001). Survey design-adjusted regression results indicated significant decreases in the odds of experiencing cost barriers to physical, mental, dental health services and prescription medications after the implementation of the ACA for people living under 200% poverty, unmarried adults, and people of color. While the race was not a substantial barrier post-ACA, living in poverty and being unmarried remained the biggest predictors of cost barriers to services. Cost barriers for all services increased post ACA for adults with private coverage, and among older adults for prescription and dental services.

Conclusions: While the ACA was largely successful in reducing the number of uninsured adults in the U.S., remaining barriers suggest the need to strengthen the ACA and reduce cost barriers to healthcare services for everyone.

Understanding the consequences of educational inequalities on periodontitis: Mendelian randomization study

AIM

Higher educational attainment is associated with a lower risk of periodontitis, but the extent to which this association is causal and mediated by intermediate factors is unclear.

METHODS AND MATERIALS

Using summary data from genetic association studies from up to 1.1 million participants of European descent, univariable and multivariable Mendelian randomization analyses were performed to infer the total effect of educational attainment on periodontitis and to estimate the degree to which income, smoking, alcohol consumption, and body mass index mediate the association.

RESULTS

The odds ratio of periodontitis per one standard deviation increment in genetically predicted education was 0.78 (95% CI: 0.68-0.89). The proportions mediated of the total effect of genetically predicted education on periodontitis were 64%, 35%, 15%, and 46% for income, smoking, alcohol consumption, and body mass index, respectively.

CONCLUSIONS

Using a genetic instrumental variable approach, this study triangulated evidence from existing observational epidemiological studies and suggested that higher educational attainment lowers periodontitis risk. Measures to reduce the burden of educational disparities in periodontitis risk may tackle downstream risk factors, particularly income, smoking, and obesity.

Health education services utilization and its determinants among migrants: a cross-sectional study in urban-rural fringe areas of Beijing, China

Background

Domestic migration poses a challenge for China as migrants have little access to preventive healthcare services and are vulnerable to certain risks and diseases. This research sought to unveil and explore the determinant factors associated with health education utilization as a key aspect in basic public health services for migrants in Beijing, China.

Methods

A sample of 863 inter-provincial migrants, 18 years old and above, was selected by three-stage stratified cluster sampling method in urban-rural fringe areas of Beijing during 2016 to 2017. Face-to-face structured interviews were conducted in the questionnaire survey. The effects of the explanatory variables on health education utilization from predisposing, enabling, health behaviors and need variables were used to demonstrate by Anderson health service utilization model.

Results

The study revealed that 61.6% migrants desired to receive health education, while only 53.8% of them received in the past year. There were differences in the utilization and needs of health education among the migrants in different ages and genders. Many migrants desired to gain access to various types of health education information from the internet. Chi-square independence test lists such major determinant factors in migrants whole health education as age, “Hukou” registration system, marital status, education level, long-term residence plan in Beijing, one or more children in Beijing, employment status, housing source, average daily working time, exercises, health knowledge, smoking, self-rated health. The binary logistic regression indicates that the migrants with younger age, high education level, one or more children in Beijing, exercises and good self-rated health were more likely to receive whole health education. The results also show that average daily working time of enabling variables and exercise of health behavior variables were the strong and consistent determinants of three types of health education utilization, including communicable, non-communicable and occupational diseases.

Conclusion

Gaps exist between the needs and utilization in health education and more attention should be given to the migrants with heavy workload and low education level. Feasible policies and measures, such as multiple health information channels, should be vigorously implemented to ensure equitable and easy access to health education for migrants.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12875-021-01368-1.

Inequality in Health Services for Internal Migrants in China: A National Cross-Sectional Study on the Role of Fund Location of Social Health Insurance

On-the-spot settlements of medical bills for internal migrants enrolled with a social health insurance program outside of their residential location have been encouraged by the Chinese government, with the intention to improve equality in healthcare services. This study compared the use of health services between the internal migrants who had local health insurance coverage and those who did not. Data (n = 144,956) were obtained from the 2017 China Migrants Dynamic Survey. Use of health services was assessed by two indicators: visits to physicians when needed and registration (shown as health records) for essential public health services. Multi-level logistic regression models were established to estimate the effect size of fund location on the use of health services after controlling for variations in other variables. The respondents who enrolled with a social health insurance scheme locally were more likely to visit physicians when needed (adjusted odds ratio (AOR) = 1.18, 95% CI = 1.06–1.30) and to have a health record (AOR = 1.47, 95% CI = 1.30–1.65) compared with those who enrolled outside of their residential location: a gap of 3.5 percentage points (95% CI: 1.3%–5.8%) and 6.1 percentage point (95% CI: 4.3%–7.8%), respectively. The gaps were larger in the rural-to-urban migrants than those in the urban-to-urban migrants (AOR = 1.17, 95% CI = 0.93–1.48 for visiting physicians when needed; AOR = 0.71, 95% CI = 0.54–0.93 for having a health record). The on-the-spot medical bill settlement system has yet to fully achieve its proposed potential as inequalities in both medical and public health services remain between the internal migrants with and without local health insurance coverage. Further studies are needed to investigate how on-the-spot settlements of medical bills are implemented through coordination across multiple insurance funds.

Health Care Disparities in Race-Ethnic Minority Communities and Populations: Does the Availability of Health Care Providers Play a Role?

OBJECTIVES

To examine disparities in use and access to different health care providers by community and individual race-ethnicity and to test provider supply as a potential mediator.

DATA SOURCES

National secondary data from 2014 Medical Expenditure Panel Survey, 5-year estimates (2010-2014) from American Community Survey, and 2014 InfoUSA.

STUDY DESIGN

Multiple logistic regression models examined the association of community and individual race-ethnicity with reported health care visits and access. Mediation analyses tested the role of provider supply.

DATA EXTRACTION METHODS

Individual-level survey data were linked to race-ethnic composition and health business counts of the respondent's primary care service area (PCSA).

PRINCIPAL FINDINGS

Minority PCSAs are significantly and independently associated with lower odds of having a visit to a physician assistant/nurse practitioner, dentist, or other health professionals and having a usual care provider (all p < 0.05). Few significant associations were observed for integrated PCSAs or for health provider supply. A modest mediation effect for provider supply was observed for travel time to usual care provider and visit to other health professionals.

CONCLUSIONS

Use of a range of health services is lower in minority communities and individuals. However, provider supply was not an important explanatory factor of these disparities.

HRSA-funded Health Centers Are an Important Source of Care and Reduce Unmet Needs in Primary Care Services

BACKGROUND

Evidence indicates the unmet need for primary care services including medical, mental health, and dental care is greater among uninsured and Medicaid beneficiaries than privately insured individuals, many of whom use Health Resources and Services Administration-funded health centers (HRSA HCs).

OBJECTIVE

We examined differences in rates of unmet need between low-income uninsured and Medicaid patients of HRSA HCs and safety-net clinics in general or private physicians.

RESEARCH DESIGN

We used logistic regression models to compare the predicted probabilities of unmet need for uninsured and Medicaid individuals whose usual source of care is HRSA HCs versus clinics in general or private physicians.

SAMPLE

We used a nationally representative survey of low income, adult patients who identified HRSA HCs as their usual source of care. We used the National Health Interview Survey to independently identify low-income individuals whose usual source of care was clinics (National Health Interview Survey clinics) or physicians (National Health Interview Survey physicians) in the general population.

MEASURES

Dependent variables were unmet need and delay in medical care, and unmet need for prescription medications, mental health, and dental care. The primary independent variable of interest was the usual source of care. We controlled for potential confounders.

RESULTS

We found the probability of unmet need for medical and dental care to be lower among HRSA HC patients than individuals whose usual source of care were not HRSA HCs.

CONCLUSIONS

HRSA HC patients have lower probabilities of unmet need for medical and dental care. This is likely because HRSA HCs provide accessible, affordable, and comprehensive primary care services. Expanding capacity of these organizations will help reduce unmet need and its consequences.

Barriers to Medicaid participation among Florida dentists

BACKGROUND

Finding dentists who treat Medicaid-enrolled children is a struggle for many parents. The purpose of this study was to identify non-reimbursement factors that influence the decision by dentists about whether or not to participate in the Medicaid program in Florida.

METHODS

Data from a mailed survey was analyzed using a logistic regression model to test the association of Medicaid participation with the Perceived Barriers and Social Responsibility variables.

RESULTS

General and pediatric dentists (n=882) who identified themselves as either Medicaid (14%) or Non-Medicaid (86%) participants responded. Five items emerged as significant predictors of Medicaid participation, with a final concordance index of 0.905. Two previously unreported barriers to participation in Medicaid emerged: 1) dentists' perception of social stigma from other dentists for participating in Medicaid, and 2) the lack of specialists to whom Medicaid patients can be referred.

CONCLUSIONS

This study provides new information about non-reimbursement barriers to Medicaid participation.

Potentially preventable dental care in operating rooms for children enrolled in Medicaid

BACKGROUND

In this study, the authors examined the prevalence and cost of care for children enrolled in Medicaid for potentially preventable dental conditions who receive surgical care in hospital operating rooms (ORs) or ambulatory surgery centers (ASCs).

METHODS

The authors analyzed Medicaid data from 8 states to find cases in which children aged 1 to 20 years received surgical care in ORs or ASCs in 2010 and 2011 for potentially preventable diagnoses, as defined with diagnostic codes.

RESULTS

For 6 states with complete data, there were 26,373 cases in 2011 in which children received OR or ASC surgical care for potentially preventable conditions. These cases represent approximately 0.5% of all children enrolled in Medicaid in these states and approximately 1% of children enrolled in Medicaid who received any dental care. There were $68 million in total Medicaid payments for these cases, with an average of $2,581 per case. Diagnostic codes indicated that 98% of cases were related to treatment of dental caries. More than two-thirds of the cases (71%) were children aged 1 to 5 years.

CONCLUSIONS

Extrapolation to the United States suggests that approximately $450 million in additional expenditures occurred in 2011 because of OR or ASC surgical care for potentially preventable pediatric dental conditions, primarily related to early childhood caries.

PRACTICAL IMPLICATIONS

Strategies to improve prevention of early childhood caries, including community- and family-based education, and to increase access to timely and early dental care for low-income children could reduce the burdens and costs of these dental problems.

Associations of Provider-to-Population Ratios and Population Health by County-Level Rurality

PURPOSE

To explore the relationship between provider-to-population ratios, rurality and population health in the United States using counties as the unit of analysis.

METHOD

Population ratios for registered nurses (RNs), primary care physicians, and dentists were included in multivariable regression analyses. Population health indices assessed were premature death rate, self-rated health, teen birth rate, and mammography screening rate.

FINDINGS

County levels of health and health care providers per capita declined as rurality increased. In adjusted regression models, the highest RN-to-population ratio was associated with significantly better health measures in most urban/rural categories, with the magnitude of these associations generally increasing as rurality increased. In the smallest rural counties, the highest RN-to-population quartile was associated with 1,655 fewer years of potential life lost (YPLL), 2% lower rates of poor or fair health, 11/1,000 fewer teen births, and 6% more mammography screening relative to the lowest quartile. For primary care physicians, more significant associations were found in medium and small rural counties where the highest quartile was associated with 1,482 fewer YPLL, 3% lower rates of poor or fair health, 7/1,000 fewer teen births, and 4% more mammography screening. The highest quartile of dentist-to-population ratio was generally associated with lower rates of premature death and poor or fair health in urban, large-, and medium-sized rural counties, but not in small rural counties.

CONCLUSIONS

The consistency of the results by provider type suggests that the supply of health care professionals, particularly in rural areas, positively impacts the health of the population.