The log-rank test statistic is very broadly used in biology. Unfortunately, P-values based on the popular chi-square approximation are often inaccurate and can be misleading.

中文翻译：

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癌症数据分析中对数秩近似的不准确性。

对数秩检验统计量在生物学中应用非常广泛。不幸的是，基于流行的卡方近似的 P 值通常不准确并且可能具有误导性。