| 1. | We included randomized controlled trials , quasi - randomized controlled trials ( that is , studies assigning patients to treatment arms by birthday or date of admission ) , nonrandomized cohort studies , and studies that used a historical cohort 我们采纳了随机化对照试验、半随机化对照试验(就是说研究中对治疗分配采取了病人生日或入院日期的区分方法) 、非随机化队列研究、和历史性队列研究。 |