Leiyu Shi

Leiyu Shi


Research Focus & Metrics

Academic Career Length

34Years (1993-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2012 in Scientifica
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Journal Article
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LSLeiyu Shi
Leiyu Shi
Primary care serves as the cornerstone in a strong healthcare system. However, it has long been overlooked in the United States (USA), and an imbalance between specialty and primary care exists. The objective of this focused review paper is to identify research evidence on the value of primary care both in the USA and internationally, focusing on the importance of effective primary care services in delivering quality healthcare, improving health outcomes, and reducing disparities. Literature searches were performed in PubMed as well as “snowballing” based on the bibliographies of the retrieved articles. The areas reviewed included primary care definitions, primary care measurement, primary care practice, primary care and health, primary care and quality, primary care and cost, primary care and equity, primary care and health centers, and primary care and healthcare reform. In both developed and developing countries, primary care has been demonstrated to be associated with enhanced access to healthcare services, better health outcomes, and a decrease in hospitalization and use of emergency department visits. Primary care can also help counteract the negative impact of poor economic conditions on health.

1 February 2005 in Journal of General Internal Medicine
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Journal Article
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LSLeiyu Shi
Leiyu Shi
GSGregory D. Stevens
Gregory D. Stevens

11 September 2017 in Journal of Medical Internet Research
Verified
Journal Article
Open access
YHY Alicia Hong
Y Alicia Hong
ZZZi Zhou
Zi Zhou
YFYa Fang
Ya Fang
LSLeiyu Shi
Leiyu Shi
Journal of Medical Internet Research - International Scientific Journal for Medical Research, Information and Communication on the Internet

9 February 2018 in BMC Health Services Research
Verified
Journal Article
Open access
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JLJiajia Li
Jiajia Li
LSLeiyu Shi
Leiyu Shi
HLHailun Liang
Hailun Liang
GDGan Ding
Gan Ding
LXLingzhong Xu
Lingzhong Xu
Despite economic growth and improved health outcomes over the past few decades, China still experiences striking urban-rural health inequalities. Urban and rural residents distinguished by the hukou system may experience profound disparities because of institutional effect. The aim of this study is to estimate trends in urban-rural disparities in self-care, outpatient care, and inpatient care utilization from a perspective of the hukou system. Data were extracted from the seven latest waves of the China Health and Nutrition Survey (CHNS). We used the hukou system to distinguish between urban and rural residents. Chi-square tests were performed to examine urban-rural gaps in self-care, outpatient care, and inpatient care utilization. Multinomial logistic regression was employed to confirm these disparities and to explore whether the urban-rural gaps have narrowed or widened from 1993 to 2011 once known determinants of utilization are taken into account according to Andersen/Aday’s Health Behaviour Model. The urban-rural disparities were evident after controlling for confounding variables: urban adults were 3.24 (p < 0.05), 2.23 (p < 0.1), and 4.77 (p < 0.01) times more likely to choose self-care vs. no care, outpatient care vs. no care, and inpatient care vs. no care than their rural counterparts, respectively. The results showed upward trends in self-care, outpatient care, and inpatient care utilization from 2004 to 2011. The urban-rural gaps in health care utilization gradually narrowed during the period of 1993–2011. The hukou distinctions of self-care, outpatient care, and inpatient care in 2011 were only 33.3%, 35.5%, and 9.6% of that in 1993, respectively. Although rural residents were underutilizing health care when compared to their urban counterparts, the significant decrements in urban-rural disparities reflect the positive effect of the on-going health system reform in China. To maintain an equitable distribution of health care utilization, policy makers need to be aware of challenges due to aging problems and health expenditure increment.

1 August 2001 in American Journal of Public Health
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Journal Article
Closed access
LSLeiyu Shi
Leiyu Shi
BSBarbara Starfield
Barbara Starfield
Objectives. This study assessed whether income inequality and primary care physician supply have a different effect on mortality among Blacks compared with Whites. Methods. We conducted a multivariate ecologic analysis of 1990 data from 273 US metropolitan areas. Results. Both income inequality and primary care physician supply were significantly associated with White mortality (P < .01). After the inclusion of the socioeconomic status covariates, the effect of income inequality on Black mortality remained significant (P < .01), but the effect of primary care physician supply was no longer significant (P > .10), particularly in areas with high income inequality. Conclusions. Improvement in population health requires addressing socioeconomic determinants of health, including income inequality and primary care availability and access.

1 December 2009 in Ethnicity & Health
Verified
Journal Article
Closed access
LSLeiyu Shi
Leiyu Shi
LLLydie A. Lebrun
Lydie A. Lebrun
JTJenna Tsai
Jenna Tsai
Objective. The number of individuals with limited English proficiency in the USA is large and rapidly growing. Consequently, addressing language barriers in access to medical care is becoming increasingly important. Previous studies have reported that individuals with limited English proficiency have more difficulty gaining access to care, compared to English-proficient individuals. We assessed the impact of English language proficiency on access to medical care, accounting for health and socioeconomic status, using nationally representative data. Design. Cross-sectional data from the 2006 National Health Interview Survey (n=29,868). The main outcome measures of interest were self-reported delayed medical care, forgone needed care, and visits to a health care professional. Results. In unadjusted analyses, individuals with limited English proficiency were more likely to forgo needed medical care and less likely to have a health care visit, compared to individuals who were proficient in English. There was no significant association between language proficiency and reports of delayed care. After accounting for individuals’ health and socioeconomic status, only the relationship between limited English proficiency and health care visits remained statistically significant. Most associations between language proficiency and access to care did not differ across various racial/ethnic groups. Conclusion. Results indicate that the choice of access measure may influence conclusions about language barriers in health care. Given the growing proportion of US residents with limited English proficiency, health care settings need to better address potential language barriers.