对于自然死亡观察比较死亡率未必科学. 应该等所有的人死了再用survial analysis来分析
所有跟贴·加跟贴·新语丝读书论坛
送交者: HunHunSheng 于 2007-03-06, 16:19:38:
回答: here is the paper,I have not read it, though. 由 23citry 于 2007-03-06, 15:32:29:
Eventually all people will die (mortality rate=100%).
所有跟贴:
加跟贴