One of the earliest attempts to analyze a statistical problem involving censored data was Bernoulli's 1766 analysis of smallpox morbidity and mortality data to demonstrate the efficacy of vaccination.
分析涉及删失数据的统计问题的最早尝试之一是丹尼尔伯努利 1766年对天花发病率和死亡率数据的分析，以证明疫苗接种的效果。