Displaying 2 results from an estimated 2 matches for "matcheddata".
2012 Jun 19
2
matchit - can I weight the parameters?
...matched on Stage. Stage is the biggest influence on outcome... so I must match it as close to perfect as possible even if that means dropping some data from the 'treatment' group.
Here's some code:
match = matchit(Group ~ Stage + Age + Gender + PS, myData, method="optimal")
matchedData = match.data(match)
by (matchedData$Stage, matchedData$Group, table)
matchedData$GP: 0
1 3A 3B 4
1 6 9 10
--------------------------------------------------------------------------------------------------------
myreData$GP: 1
1 3A 3B 4
1 3 9 13
Can anyone point me to a method that...
2012 Dec 15
3
How to speed up the for loop by releasing memeory
Dear list;
How can I speed up the run of following code (illustrative)
#========================================================================
con<-vector("numeric")
for (i in 1:limit)
{
if(matched data for the ith item found) {
if(i==1) {con<-RowOfMatchedData } else
{con<-rbind(con,matchedData)}
}
}
#========================================================================
each RowOfMatchedData contains 105 variables, when "i" runs over 10^7
and the data container "con" get l...