Clinical outcomes by 2 years according to trial arm: weighted, unweighted and subgroup analyses.

Notes to table:ARR (absolute risk reduction), calculated only for whole sample. * favours probiotics † favours placebo.Weighted numbers differ from original numbers. Cell counts were rounded by spss.All sample, intention to treat.表格注释：绝对风险降低值（absolute risk reduction, ARR）仅针对全样本计算所得。* 表示益生菌组更优；† 表示安慰剂组更优。加权数值与原始数值存在差异。单元格计数已由SPSS进行四舍五入处理。所有样本均采用意向性治疗（intention to treat, ITT）分析原则。