Conclusion For large and complicated data, propensity score methods had more flexibility in p...
结论对于大量、关系复杂的数据，应用倾向指数方法具有较大的灵活性。
Around 7 p. m., visitors were leaving the hospital in large number.
下午7时左右，大批来院访客离开医院。
Around 7 p. m., visitors were leaving the hospital in large number.
下午7时左右，大批来院访客离开医院。
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