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我正在尝试在 matlab 中进行生存分析,并想计算几条曲线之间的对数秩测试分数。我在这里找到了一个可能的代码来进行日志排名。但根据它的描述,它只能在两组之间进行对数秩检验。如果我有 3 条或更多曲线怎么办?