标题: 非對稱效果的估計 [打印本页] 作者: chienhsin 时间: 2011-6-17 06:04 标题: 非對稱效果的估計 Kenny你好: 0 e; A" O2 ~. H) Y+ I' e ) ~; R& X4 r; f4 {6 G我最近在一篇文章內看到作者如此敘述他的方法: 8 l6 ]2 ^' E& u2 J4 S先說明資料結構,每一筆資料有Y A B" @6 {$ Y) C- Z
作者要估計 (A-B) 差是正值或負值時對Y的效果。 * p) j# u% U) ^* i# M+ B b( p1 B0 z/ D( g8 }we fitted a random-effects piecewise logit model on the data set using the difference between A and B as an independent variable and accounting for potentially different slopes when the A-B difference was positive versus negative. $ K, M0 w; i4 I1 p& e' X 4 M1 y& b4 i. N% S分析後,結果同時顯示了當A-B為正、A-B為負,之結果。7 H; O# g4 W# W5 H! p