将年龄、性别和种族进行调整后，研究人员对术后六个月的体重减轻情况进行了比较。
After adjusting for age, gender and race, researchers compared weight loss six months after surgery.
他们同时发现，年龄，种族，和体重指数是这些儿童感染相关性死亡的重要预测因子。
They also found that age, ethnicity and body mass index (BMI) were significant predictors of infection-related mortality in these children.
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