Estimating the quality-of-life-adjusted gap time distribution of successive events subject to censoring
删失下连续事件生活质量调整间隔时间分布的估计AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要以治疗效果研究为背景,直接估计生活质量调整结局的联合和条件分布,因此选择分布方向,但因果识别条件未说明。
删失下连续事件生活质量调整间隔时间分布的估计AI 解读 ↓
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When treatment effects are studied in the context of successive or recurrent life events, separate analyses of the quality-of-life scores and of the inter-event, gap, times might lead to possibly contradictory conclusions. In an attempt to reconcile this, we propose a unitary and more comprehensive nonparametric analysis that combines the two separate analyses by introducing the quality-of-life-adjusted gap time concept. Inverse probability of censoring estimators of the quality-of-life-adjusted gap time joint and conditional distributions are proposed and are shown to be consistent and asymptotically normal. Simulations performed in a variety of scenarios indicate that the joint and conditional quality-of-life-adjusted gap time distribution estimators are virtually unbiased, with properly estimated standard errors and asymptotic normality features. An example from the International Breast Cancer Study Group Trial V illustrates the use of the proposed estimators.
条件影响函数
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存在低报的有序选择模型中的变化中变化方法
We develop a Difference-in-Differences framework for discrete, ordered outcomes subject to underreporting. Such outcomes commonly arise in self-reported surveys on socially undesirable or stigmatized behaviors, where respondents may conceal their true behavior. For a discrete Changes-in-Changes model that is shown to admit an equivalent threshold-crossing representation, we derive nonparametric bounds for the counterfactual and factual outcome distributions as well as for…