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5 results for “from:Qian An”

Stratified bootstrap question
Qian An · Mar 25, 2005 · r-help

Dear experts, I am asking for help with a question regarding to stratified bootstrap. My dataset is a longitudinal dataset (3 measurements per person at year 1, 4 and 7) composed of multiple clinic centers and multiple participants within each...

Stratified Bootstrap question
Qian An · Apr 1, 2005 · r-help

Dear Tim, Thank you so much for addressing all my questions. This really makes sense. I talked with my advisor yesterday about how to do bootstrapping for my scenario: random clinic + random subject within clinic. She suggested that only clinic...

Stratified Bootstrap question
Qian An · Apr 7, 2005 · r-help

Dear Tim, Thank you very much for taking time giving me advices on my questions. I talked with my professor about this bootstrapping question whether to resample clinic or resample clinic + resample patients within clinic. I was told that the...

Stratified Bootstrap question
Qian An · Mar 30, 2005 · r-help

Dear Tim, Thank you very much for your information. I will try to play with S+ as you suggested. At the same time, I would like to share our idea with you about the stratified bootstrapping for my scenario. I...

Stratified Bootstrap question
Qian An · Mar 30, 2005 · r-help

Dear Tim, Thank you so much for your help. My random mixed model is as follows: b.lme <- lme(sbp ~ age + gender, data=bdat, random=~1/clinic/id, na.action=na.omit) When doing bootstrap with stratum clinic, a patient...

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