Jinkyung Ha

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Several authors have indicated that incorrectly classified cause of death for prostate cancer survivors may have played a role in the observed recent peak and decline of prostate cancer mortality. Motivated by the suggestion we studied a competing risks model where other cause of death may be misattributed as a death of interest. We first consider a naïve(More)
Thus, although the free flow of information is touted as a means of promoting patient autonomy, the crowded landscape of biased health care information on the Internet creates an environment in which it may bemore difficult for patients to make informed health care decisions. An important first step toward ameliorating these risks would be to clearly(More)
RESEARCH DESIGN AND METHODSdWe performed a cross-sectional analysis of 5,991 respondents $53 years of age from the 2006 wave of the Health and Retirement Study. All respondents self-reported physical function limitations and comorbidities (chronic diseases and geriatric conditions). Respondents with prediabetes reported no diabetes and had a measured(More)
OBJECTIVE To describe the prevalence of physical function limitations among a nationally representative sample of adults with prediabetes. RESEARCH DESIGN AND METHODS We performed a cross-sectional analysis of 5,991 respondents≥53 years of age from the 2006 wave of the Health and Retirement Study. All respondents self-reported physical function(More)
Misclassified causes of failures are a common phenomenon in competing risks survival data such as cancer mortality. We propose new estimating equations for a semiparametric proportional hazards (PH) model with misattributed causes of failures. Unlike other methods, the estimator does not require any parametric assumptions on baseline cause-specific hazard(More)
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