Self-Controlled Case Series Analysis With Event-Dependent Observation Periods
观察期依赖事件时的自控病例系列分析
The self-controlled case series method may be used to study the association between a time-varying exposure and a health event. It is based only on cases, and it controls for fixed confounders. Exposure and event histories are collected for each case over a predefined observation period. The method requires that observation periods should be independent of event times. This requirement is violated when events increase the mortality rate, since censoring of the observation…