Cox models with robust standard errors were used to compare the hazard of death among children under 5 years of age in project and control villages.
采用Cox稳健标准误差模型来比较项目村庄和对照村庄五岁以下儿童的死亡风险。
Cox models with robust standard errors were used to compare the hazard of death among children under 5 years of age in project and control villages.
采用Cox稳健标准误差模型来比较项目村庄和对照村庄五岁以下儿童的死亡风险。
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