Homogeneity showed that random effect model should be selecte d to calculate the pooling relative risk(RR)and its corresponding9%confide nce interval(9%CI).
Homogeneity showed that random effect model should be selecte d to calculate the pooling relative risk(RR)and its corresponding9%confide nce interval(9%CI).
根据资料一致性检验,采用随机效应模型(D-L法)计算合并相对危险度(RR)及其9%的可信区间(9%CI)。