探讨解决四格表确切概率计算出现大数溢出错误的方法

The Method of Solving Large Number Overflow Error in Fourfold Table Fisher's Exact Test Calculation

目的:解决Fisher确切概率计算中大数溢出的问题。方法:尝试使用Perl语言编写计算程序。结果:编写的程序运行结果正确,没有出现溢出问题。结论:通过Perl程序可以较好地实现四格表确切概率计算。

Objective： To solve the problem of large number overflow in Fisher＇s Exact Test. Methods： Try to write program by Perl. Results. The Perl program runs well and avoids large number overflow error. Conclusions. Fourfold Table Fisher＇s Exact Test calculation can be well realized by Perl program.