635 (n = 221) 
## 
## NOTE: The above average outcomes are biased estimates of
##       the expected outcomes conditional on subgroups. 
##       Use &#39;validate.subgroup()&#39; to obtain unbiased estimates.
## 
## ---------------------------------------------------
## 
## Benefit score quantiles (f(X) for 1 vs 0): 
##       0%      25%      50%      75%     100% 
## -14.3195  -3.7348  -0.6998   2.0439  13.0446 
## 
## ---------------------------------------------------
## 
## Summary of individual treatm