因为你从诊断日期开始计算生存期，即使死于不做筛查时的同一原因并且同一天，但看起来生存期更长了。
Because you measure survival from the date of diagnosis, even if the person dies of the same cause on the same day they would have without screening, it looks like survival was longer.
研究人员对这些孩子从出生到临床诊断为ASD或到KPSC健康计划终止时或到任何原因的死亡日期或者以2012年12月31日为截止日期，进行了回顾性的研究。
The researchers tracked the children retrospectively from birth until the date of clinical ASD diagnosis, last date of KPSC health plan membership, death date to any cause or December 31st, 2012.
“一般研究完成日期就诊”或“CSED就诊”指的是为所有受试者安排在CSED之后的30天内的诊断。
The "Common Study End Date visit" or "CSED visit" is a visit scheduled for all subjects within 30 days after the CSED.
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