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临床研究统计思维之数据预处理(3)
数据预处理是临床研究中 “磨刀不误砍柴工” 的关键环节,其核心是通过清洗、转换、整合等操作,将原始数据转化为高质量、可分析的格式。过程中需兼顾统计合理性与临床意义,同时严格记录操作流程,为后续的特征筛选、模型构建奠定可靠基础。
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