Re: [R] exclusion rules for propensity score matchng (pattern rec)

2005-04-05 Thread Frank E Harrell Jr
[EMAIL PROTECTED] wrote: Dear R-list, i have 6 different sets of samples. Each sample has about 5000 observations, with each observation comprised of 150 baseline covariates (X), 125 of which are dichotomous. Roughly 20% of the observations in each sample are treatment and the rest are control

Re: [R] exclusion rules for propensity score matchng (pattern rec)

2005-04-05 Thread Alexis J. Diamond
hi, thanks for the reply to my query about exclusion rules for propensity score matching. Exclusion can be based on the non-overlap regions from the propensity. It should not be done in the individual covariate space. i want a rule inspired by non-overlap in propensity score space, but that

Re: [R] exclusion rules for propensity score matchng (pattern rec)

2005-04-05 Thread Frank E Harrell Jr
Alexis J. Diamond wrote: hi, thanks for the reply to my query about exclusion rules for propensity score matching. Exclusion can be based on the non-overlap regions from the propensity. It should not be done in the individual covariate space. i want a rule inspired by non-overlap in propensity

[R] exclusion rules for propensity score matchng (pattern rec)

2005-04-04 Thread adiamond
Dear R-list, i have 6 different sets of samples. Each sample has about 5000 observations, with each observation comprised of 150 baseline covariates (X), 125 of which are dichotomous. Roughly 20% of the observations in each sample are treatment and the rest are control units. i am doing