Hui Jie Wong

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The growth of managed care has prompted questions about the effects of health maintenance organizations (HMOs) on consumers. This Issue Brief reports the results from a large national study of the privately insured population. No detectable difference was found between HMOs and other types of insurance in the use of three costly services--inpatient care,(More)
BACKGROUND Childhood malnutrition is a multi-dimensional problem. An increase in household income is not sufficient to reduce childhood malnutrition if children are deprived of food security, education, access to water, sanitation and health services. The aim of this study is to identify the characteristics of malnourished children below five years of age(More)
This study analyzes the effects of health maintenance organizations (HMOs) on the use of health services by the privately insured, nonelderly population. After controlling for population and location differences, HMOs increase physician visits, nonphysician practitioner visits, and total ambulatory visits by modest but significant margins, while shifting(More)
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