Regional Expertise
Regional Expertise
Research Spotlight
Karen Eggleston
Beatriz Magaloni
Scott Rozelle
Kiyoteru Tsutsui
Bringing Evidence-Based Policy Change to Rural China
Almost Parity: Understanding the India-Pakistan Conventional Military Balance
The Prevalence and Correlates of Vision Impairment and Glasses Ownership among Ethnic Minority and Han Schoolchildren in Rural China
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Purpose: To determine the prevalence of visual impairment and glasses ownership among Han Chinese and Hui minority junior high school children in Ningxia Hui Autonomous Region, China.
Design: Population-based cross-sectional study.
Methods: Vision screening was conducted on 20,376 children (age 12–15 years) in all 124 rural junior high schools in Ningxia. Personal and family characteristics, glasses ownership, and academic performance were assessed through a survey questionnaire and standardized mathematics test, respectively.
Results: The prevalence of visual acuity (VA) ≤6/12 in either eye was significantly higher among Han (54.5%) than Hui (45.2%) children (P<0.001), and was significantly positively associated with age, female sex, Han ethnicity, parental outmigration for work, shorter time spent outside during recess, shorter time spent watching television and higher time spent studying. Among children with VA≤6/12 in both eyes, only 56.8% of Han and 41.5% of Hui children had glasses (P<0.001). Glasses ownership was significantly associated with worse vision, greater family wealth, female sex, higher test scores, age, parental outmigration for work, understanding of myopia and glasses, higher time spent studying and Han ethnicity.
Conclusion: One of the first of its kind, this report on Han and Hui ethnic schoolchildren confirms a high prevalence of visual impairment among both populations, but slightly higher among the Han. Both groups, especially the Hui, have low rates of glasses ownership. Future interventions and policies designed to improve glasses usage should focus on populations with lower incomes and seek to correct erroneous beliefs about the safety of glasses and efficacy of traditional eye exercises.
Early Childhood Development and Parental Training Interventions in Rural China: A Systematic Review and Meta-Analysis
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Pandemic Spikes and Broken Spears: Indigenous Resilience after the Conquest of Mexico
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It is well-established that the Conquest of the Americas by Europeans led to catastrophic declines in indigenous populations. However, less is known about the conditions under which indigenous communities were able to overcome the onslaught of disease and violence that they faced. Drawing upon a rich set of sources, including Aztec tribute rolls and early Conquest censuses (chiefly the Suma de Visita} (1548)), we develop a new disaggregated dataset on pre-Conquest economic, epidemiological and political conditions both in 11,888 potential settlement locations in the historic core of Mexico and in 1,093 actual Conquest-era city-settlements. Of these 1,093 settlements, we show that 36% had disappeared entirely by 1790. Yet, despite being subject to Conquest-era violence, subsequent coercion and multiple pandemics that led average populations in those settlements to fall from 2,377 to 128 by 1646, 13% would still end the colonial era larger than they started. We show that both indigenous settlement survival durations and population levels through the colonial period are robustly predicted, not just by Spanish settler choices or by their diseases, but also by the extent to which indigenous communities could themselves leverage non-replicable and non-expropriable resources and skills from the pre-Hispanic period that would prove complementary to global trade. Thus indigenous opportunities and agency played important roles in shaping their own resilience.
Consultation Length, Process Quality and Diagnosis Quality of Primary Care in Rural China: A Cross-Sectional Standardized Patient Study
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POMEPS Studies 43: Digital Activism and Authoritarian Adaptation in the Middle East
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Grassland Ecological Compensation Policy in China Improves Grassland Quality and Increases Herders’ Income
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Many countries have undertaken large and high-profile payment-for-ecosystem-services (PES) programs to sustain the use of their natural resources. Nevertheless, few studies have comprehensively examined the impacts of existing PES programs. Grassland Ecological Compensation Policy (GECP) is one of the few pastorally focused PES programs with large investments and long duration, which aim to improve grassland quality and increase herder income. Here we present empirical evidence of the effects of GECP on grassland quality and herder income. Through a thorough and in-depth econometric analysis of remote sensing and household survey data, we find that, although GECP improves grassland quality (albeit to only a small extent) and has a large positive effect on income, it exacerbates existing income inequality among herders within their local communities. The analysis demonstrates that the program has induced herders to change their livestock production behavior. Heterogeneity analysis emphasizes the importance of making sure the programs are flexible and are adapted to local resource circumstances.
A Generalizable Data Assembly Algorithm for Infectious Disease Outbreaks
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Democracies Linked To Greater Universal Health Coverage Compared With Autocracies, Even In An Economic Recession
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Is Deliberation an Antidote to Extreme Partisan Polarization? Reflections on “America in One Room”
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Spatial Models of Giant Pandas Under Current and Future Conditions Reveal Extinction Risks
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In addition to habitat loss and fragmentation, demographic processes—the vagaries of births, deaths and sex ratio fluctuations—pose substantial threats to wild giant panda populations. Additionally, climate change and plans for the Giant Panda National Park may influence (in opposing directions) the extinction risk for wild giant pandas. The Fourth National Giant Panda Census showed pandas living in 33 isolated populations. An estimated 259 animals live in 25 of these groups, ~14% of the total population. We used individual-based models to simulate time series of these small populations for 100 years. We analysed the spatial pattern of their risk of extinction under current conditions and multiple climate change models. Furthermore, we consider the impact of the proposed Giant Panda National Park. Results showed that 15 populations face a risk >90%, and for 3 other populations the risk is >50%. Of the 15 most at-risk populations, national parks can protect only 3. Under the Representative Concentration Pathway 8.5 climate change scenario, the 33 populations will probably further divide into 56 populations. Some 41 of them will face a risk >50% and 35 face a risk >90%. Although national parks will probably connect some fragmented habitats, 26 populations will be outside national park planning. Our study gives practical advice for conservation policies and management and has implications for the conservation of other species in the world that live in isolated, fragmented habitats.
COVID-19 in the California State Prison System: an Observational Study of Decarceration, Ongoing Risks, and Risk Factors
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In the Forest of No Joy: The Congo-Océan Railroad and the Tragedy of French Colonialism
Opinion: Global spyware such as Pegasus is a threat to democracy. Here’s how to stop it.
The Wisdom and Efficacy of Engagement: Objectives, Assumptions, and Impacts
Chapter from Engaging China:Fifty Years of Sino-American Relations, Anne F. Thurston, ed. Columbia University Press
Cleaner air has contributed one-fifth of US maize and soybean yield gains since 1999
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COVID-19 Related Immunization Disruptions in Rajasthan, India
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