送交者: HunHunSheng 于 2008-11-04, 12:59:17:

• 有可能是不锻炼活得最长. (无内容) - 湘女 (0 bytes) 2008-11-04, 14:06:59 (271504)
• 两个卵分两组， 一次抛一个。 - Latino2 (18 bytes) 2008-11-04, 14:05:19 (271501)
  • 看成两个卵二姐，正想这抛丸关猪天蓬什么事。 (无内容) - steven (0 bytes) 2008-11-04, 14:58:20 (271538)
• how do you remove the bias that favor the 2nd group? (无内容) - chouqilozi (0 bytes) 2008-11-04, 13:11:56 (271480)
  • What bias? (无内容) - HunHunSheng (0 bytes) 2008-11-04, 13:15:19 (271482)
    • the fact that the 2nd group are survivors of more years than the 1st group. (无内容) - chouqilozi (0 bytes) 2008-11-04, 13:18:29 (271483)
      • Then delete anyone from the study who died before 50 (无内容) - HunHunSheng (0 bytes) 2008-11-04, 13:26:02 (271486)
        • yes, this is fine, I overlooked that they are identical twins. (无内容) - chouqilozi (0 bytes) 2008-11-04, 13:31:20 (271489)
        • Or consider those in 2nd group who died before 40 - HunHunSheng (52 bytes) 2008-11-04, 13:27:26 (271487)

加跟贴