Re: [R] how to extract p-value in GenMatch function
Dear Peter, Thanks for your kind help. I got the solution now. Best Regards, Shyam From: Peter Ehlers ehl...@ucalgary.ca To: shyam basnet shyamabc2...@yahoo.com Cc: r-help@R-project.org r-help@r-project.org Sent: Monday, July 16, 2012 1:16 AM Subject: Re: [R] how to extract p-value in GenMatch function On 2012-07-15 14:37, shyam basnet wrote: Dear R-Users, I have a problem on extracting T-Stat and P-Value. I have written R-code below library(Matching) data(lalonde) attach(lalonde) names(lalonde) Y- lalonde$re78 Tr- lalonde$treat glm1- glm(Tr~age+educ+black+hisp+married+nodegr+re74+re75,family=binomial,data=lalonde) pscore.predicted- predict(glm1) rr1- Match(Y=Y,Tr=Tr,X=glm1$fitted,estimand=ATT, M=1,ties=TRUE,replace=TRUE) summary(rr1) summary(rr1) Estimate... 2624.3 AI SE.. 802.19 T-stat. 3.2714 p.val.. 0.0010702 Original number of observations.. 445 Original number of treated obs... 185 Matched number of observations... 185 Matched number of observations (unweighted). 344 In above output, I can extract Estimate and AI SE with below code: rr1$est rr1$se But the problem is I could not extract T-statistic and P-value from the above output. Could you please someone help me to resolve this problem? You could look at the code for summary.Match to see that T-stat (not surprisingly) is calculated as est/se and p.val is calculated as (1 - pnorm(abs(est/se))) * 2. summary.Match() doesn't return these values, it just prints them. Peter Ehlers Thanking you, Best Regards, Shyam Basnet SLU, Uppsala, Sweden [[alternative HTML version deleted]] [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] how to extract p-value in GenMatch function
Dear R-Users, I have a problem on extracting T-Stat and P-Value. I have written R-code below library(Matching) data(lalonde) attach(lalonde) names(lalonde) Y - lalonde$re78 Tr - lalonde$treat glm1 - glm(Tr~age+educ+black+hisp+married+nodegr+re74+re75,family=binomial,data=lalonde) pscore.predicted - predict(glm1) rr1 - Match(Y=Y,Tr=Tr,X=glm1$fitted,estimand=ATT, M=1,ties=TRUE,replace=TRUE) summary(rr1) summary(rr1) Estimate... 2624.3 AI SE.. 802.19 T-stat. 3.2714 p.val.. 0.0010702 Original number of observations.. 445 Original number of treated obs... 185 Matched number of observations... 185 Matched number of observations (unweighted). 344 In above output, I can extract Estimate and AI SE with below code: rr1$est rr1$se But the problem is I could not extract T-statistic and P-value from the above output. Could you please someone help me to resolve this problem? Thanking you, Best Regards, Shyam Basnet SLU, Uppsala, Sweden [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] how to extract p-value in GenMatch function
On 2012-07-15 14:37, shyam basnet wrote: Dear R-Users, I have a problem on extracting T-Stat and P-Value. I have written R-code below library(Matching) data(lalonde) attach(lalonde) names(lalonde) Y- lalonde$re78 Tr- lalonde$treat glm1- glm(Tr~age+educ+black+hisp+married+nodegr+re74+re75,family=binomial,data=lalonde) pscore.predicted- predict(glm1) rr1- Match(Y=Y,Tr=Tr,X=glm1$fitted,estimand=ATT, M=1,ties=TRUE,replace=TRUE) summary(rr1) summary(rr1) Estimate... 2624.3 AI SE.. 802.19 T-stat. 3.2714 p.val.. 0.0010702 Original number of observations.. 445 Original number of treated obs... 185 Matched number of observations... 185 Matched number of observations (unweighted). 344 In above output, I can extract Estimate and AI SE with below code: rr1$est rr1$se But the problem is I could not extract T-statistic and P-value from the above output. Could you please someone help me to resolve this problem? You could look at the code for summary.Match to see that T-stat (not surprisingly) is calculated as est/se and p.val is calculated as (1 - pnorm(abs(est/se))) * 2. summary.Match() doesn't return these values, it just prints them. Peter Ehlers Thanking you, Best Regards, Shyam Basnet SLU, Uppsala, Sweden [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
