export(
  relative.effect,
  pscore, 
  plot.pscore,
  ps.makestrata,
  ps.match,   
  dist.plot,
  ps.balance,
  plot.stdf,
  ps.estimate,

  print.relative.effect,
  print.pscore,                          
  print.stratified.data.frame,   
  print.stratified.pscore,
  print.matched.data.frame,
  print.matched.data.frames,
  print.matched.pscore,
  print.est.data.frame,                   
  print.est.matched.data.frame,
  print.est.matched.pscore,            
  print.est.stratified.data.frame,
  print.est.stratified.pscore,
  print.bal.data.frame,                
  print.bal.matched.data.frame,
  print.bal.matched.pscore,            
  print.bal.stratified.data.frame,
  print.bal.stratified.pscore,

  print.summary.bal.data.frame, 
  print.summary.bal.matched.data.frame,
  print.summary.bal.matched.pscore,
  print.summary.bal.stratified.data.frame,
  print.summary.bal.stratified.pscore,
  print.summary.est.data.frame,
  print.summary.est.matched.data.frame,
  print.summary.est.matched.pscore,
  print.summary.est.stratified.data.frame,
  print.summary.est.stratified.pscore,
  print.summary.matched.data.frame,
  print.summary.matched.data.frames,
  print.summary.matched.pscore,
  print.summary.pscore,
  print.summary.relative.effect,
  print.summary.stratified.data.frame,
  print.summary.stratified.pscore,

  summary.bal.data.frame, 
  summary.bal.matched.data.frame,
  summary.bal.matched.pscore,
  summary.bal.stratified.data.frame,
  summary.bal.stratified.pscore,
  summary.est.data.frame,
  summary.est.matched.data.frame,
  summary.est.matched.pscore,
  summary.est.stratified.data.frame,
  summary.est.stratified.pscore,
  summary.matched.data.frame,
  summary.matched.data.frames,
  summary.matched.pscore,
  summary.pscore,
  summary.relative.effect,
  summary.stratified.data.frame,
  summary.stratified.pscore
)

S3method(print, relative.effect)
S3method(print, pscore)                          
S3method(print, stratified.data.frame) 
S3method(print, stratified.pscore)
S3method(print, matched.data.frame)
S3method(print, matched.data.frames)
S3method(print, matched.pscore)
S3method(print, est.data.frame)
S3method(print, est.matched.data.frame)
S3method(print, est.matched.pscore)
S3method(print, est.stratified.data.frame)
S3method(print, est.stratified.pscore)
S3method(print, bal.data.frame)             
S3method(print, bal.matched.data.frame)
S3method(print, bal.matched.pscore)
S3method(print, bal.stratified.data.frame)
S3method(print, bal.stratified.pscore)

S3method(print, summary.relative.effect)
S3method(print, summary.pscore)                          
S3method(print, summary.stratified.data.frame) 
S3method(print, summary.stratified.pscore)
S3method(print, summary.matched.data.frame)
S3method(print, summary.matched.data.frames)
S3method(print, summary.matched.pscore)
S3method(print, summary.est.data.frame)
S3method(print, summary.est.matched.data.frame)
S3method(print, summary.est.matched.pscore)
S3method(print, summary.est.stratified.data.frame)
S3method(print, summary.est.stratified.pscore)
S3method(print, summary.bal.data.frame)             
S3method(print, summary.bal.matched.data.frame)
S3method(print, summary.bal.matched.pscore)
S3method(print, summary.bal.stratified.data.frame)
S3method(print, summary.bal.stratified.pscore)

S3method(summary, relative.effect)
S3method(summary, pscore)                          
S3method(summary, stratified.data.frame) 
S3method(summary, stratified.pscore)
S3method(summary, matched.data.frame)
S3method(summary, matched.data.frames)
S3method(summary, matched.pscore)
S3method(summary, est.data.frame)
S3method(summary, est.matched.data.frame)
S3method(summary, est.matched.pscore)
S3method(summary, est.stratified.data.frame)
S3method(summary, est.stratified.pscore)
S3method(summary, bal.data.frame)             
S3method(summary, bal.matched.data.frame)
S3method(summary, bal.matched.pscore)
S3method(summary, bal.stratified.data.frame)
S3method(summary, bal.stratified.pscore)


S3method(ps.makestrata, pscore)
S3method(ps.makestrata, data.frame)

S3method(ps.match, pscore)
S3method(ps.match, data.frame)

S3method(dist.plot, pscore)
S3method(dist.plot, stratified.pscore)
S3method(dist.plot, stratified.data.frame)
S3method(dist.plot, matched.pscore)
S3method(dist.plot, matched.data.frame)
S3method(dist.plot, matched.data.frames)
S3method(dist.plot, data.frame)

S3method(ps.balance, stratified.pscore)
S3method(ps.balance, stratified.data.frame)
S3method(ps.balance, matched.pscore)
S3method(ps.balance, matched.data.frame)
S3method(ps.balance, matched.data.frames)
S3method(ps.balance, data.frame)

S3method(ps.estimate, data.frame)
S3method(ps.estimate, stratified.pscore)
S3method(ps.estimate, stratified.data.frame)
S3method(ps.estimate, matched.pscore)
S3method(ps.estimate, matched.data.frame)
S3method(ps.estimate, matched.data.frames)
