Subgroup Analysis Example
{"Image DocumentName": "Subgroup Analysis Example", "Image ImageDescription": "Data: Yijkl , where i=Trt,Cntrl ; j=Old, Yng; k = GoodInit, PoorInit. Model: Yijkl = mijk + eijkl, where mijk=m+ai+bj+gk+(ab)ij+(ag)ik+(bg)jk. Subgroup Contrasts: m111 m112 m121 m122 m211 m212 m221 m222. Overall \u00bc \u00bc \u00bc \u00bc -\u00bc -\u00bc -\u00bc -\u00bc. Older \u00bd \u00bd 0 0 -\u00bd -\u00bd 0 0. Younger 0 0 \u00bd \u00bd 0 0 -\u00bd -\u00bd. GoodInit \u00bd 0 \u00bd 0 -\u00bd 0 -\u00bd 0. PoorInit 0 \u00bd 0 \u00bd 0 -\u00bd 0 -\u00bd. OldGood OldPoor YoungGood YoungPoor Need to use frequency-based weights in case of extreme imbalance \u2013 example in SAS book.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}