days lost from school
... 全人群策略 population strategy 缺课天数 days lost from school 缺勤天数 days lost from work ...
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·2,447,543篇论文数据，部分数据来源于NoteExpress
健康教育组在发作次数和缺课天数方面明显少于对照组（P<0.01）。
The attack frequency and absent days in the health education group were less than those in the control group (P<0.01).
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