CiC: no visible global function definition for 'as.formula'
CiC: no visible global function definition for 'model.frame'
CiC: no visible global function definition for 'terms'
MDiD: no visible global function definition for 'as.formula'
MDiD: no visible global function definition for 'model.frame'
MDiD: no visible global function definition for 'terms'
QDiD: no visible global function definition for 'as.formula'
QDiD: no visible global function definition for 'model.frame'
QDiD: no visible global function definition for 'terms'
bounds: no visible global function definition for 'as.formula'
bounds: no visible global function definition for 'model.frame'
bounds: no visible global function definition for 'terms'
bounds: no visible global function definition for 'ecdf'
bounds: no visible global function definition for 'glm'
bounds: no visible global function definition for 'binomial'
bounds: no visible global function definition for 'fitted'
bounds: no visible global function definition for 'approxfun'
bounds: no visible global function definition for 'quantile'
bounds: no visible global function definition for 'lines'
bounds: no visible global function definition for 'abline'
ci.qte: no visible global function definition for 'as.formula'
ci.qte: no visible global function definition for 'model.frame'
ci.qte: no visible global function definition for 'terms'
ci.qtet: no visible global function definition for 'as.formula'
ci.qtet: no visible global function definition for 'model.frame'
ci.qtet: no visible global function definition for 'terms'
compute.CiC: no visible global function definition for 'as.formula'
compute.CiC: no visible global function definition for 'model.frame'
compute.CiC: no visible global function definition for 'terms'
compute.CiC: no visible global function definition for 'lm'
compute.CiC: no visible global function definition for 'coef'
compute.CiC: no visible global function definition for 'ecdf'
compute.CiC : Finv.untreated.tmin1: no visible global function
  definition for 'quantile'
compute.CiC: no visible global function definition for 'approxfun'
compute.CiC: no visible global function definition for 'quantile'
compute.CiC: no visible global function definition for 'abline'
compute.MDiD: no visible global function definition for 'as.formula'
compute.MDiD: no visible global function definition for 'model.frame'
compute.MDiD: no visible global function definition for 'terms'
compute.MDiD: no visible global function definition for 'lm'
compute.MDiD: no visible global function definition for 'coef'
compute.MDiD: no visible global function definition for 'quantile'
compute.MDiD: no visible global function definition for 'abline'
compute.QDiD: no visible global function definition for 'as.formula'
compute.QDiD: no visible global function definition for 'model.frame'
compute.QDiD: no visible global function definition for 'terms'
compute.QDiD: no visible global function definition for 'lm'
compute.QDiD: no visible global function definition for 'coef'
compute.QDiD: no visible global function definition for 'quantile'
compute.QDiD: no visible global function definition for 'ecdf'
compute.QDiD: no visible global function definition for 'abline'
compute.ci.qte: no visible global function definition for 'as.formula'
compute.ci.qte: no visible global function definition for 'model.frame'
compute.ci.qte: no visible global function definition for 'terms'
compute.ci.qte: no visible global function definition for 'quantile'
compute.ci.qte: no visible global function definition for 'fitted'
compute.ci.qte: no visible global function definition for 'glm'
compute.ci.qte: no visible global function definition for 'binomial'
compute.ci.qte : get.firpo.quantiles: no visible global function
  definition for 'optimize'
compute.ci.qtet: no visible global function definition for 'as.formula'
compute.ci.qtet: no visible global function definition for
  'model.frame'
compute.ci.qtet: no visible global function definition for 'terms'
compute.ci.qtet: no visible global function definition for 'quantile'
compute.ci.qtet: no visible global function definition for 'fitted'
compute.ci.qtet: no visible global function definition for 'glm'
compute.ci.qtet: no visible global function definition for 'binomial'
compute.ci.qtet : get.firpo.quantiles: no visible global function
  definition for 'optimize'
compute.panel.qtet: no visible global function definition for
  'as.formula'
compute.panel.qtet: no visible global function definition for
  'model.frame'
compute.panel.qtet: no visible global function definition for 'terms'
compute.panel.qtet: no visible global function definition for 'ecdf'
compute.panel.qtet: no visible global function definition for 'glm'
compute.panel.qtet: no visible global function definition for
  'binomial'
compute.panel.qtet: no visible global function definition for 'fitted'
compute.panel.qtet: no visible global function definition for
  'approxfun'
compute.panel.qtet: no visible global function definition for 'var'
compute.panel.qtet: no visible global function definition for 'nlm'
compute.panel.qtet: no visible global function definition for 'tail'
compute.panel.qtet : k: no visible global function definition for
  'dnorm'
compute.panel.qtet: no visible global function definition for 'sd'
compute.panel.qtet : cv.min: no visible global function definition for
  'nlm'
compute.panel.qtet : F.to.ecdf: no visible global function definition
  for 'approxfun'
compute.panel.qtet : quantile.alt: no visible global function
  definition for 'knots'
compute.panel.qtet: no visible global function definition for
  'quantile'
computeDiffSE: no visible global function definition for 'sd'
computeDiffSE: no visible binding for global variable 'sd'
computeSE: no visible global function definition for 'sd'
computeSE: no visible binding for global variable 'sd'
panel.qtet: no visible global function definition for 'as.formula'
panel.qtet: no visible global function definition for 'model.frame'
panel.qtet: no visible global function definition for 'terms'
plot.BoundsObj: no visible global function definition for 'median'
plot.BoundsObj: no visible global function definition for 'plot'
plot.BoundsObj: no visible global function definition for 'lines'
plot.BoundsObj: no visible global function definition for 'abline'
plot.BoundsObj: no visible global function definition for 'legend'
plot.QTE: no visible global function definition for 'median'
plot.QTE: no visible global function definition for 'plot'
plot.QTE: no visible global function definition for 'lines'
plot.QTE: no visible global function definition for 'abline'
plot.QTE: no visible global function definition for 'legend'
print.matrix1: no visible global function definition for 'write.table'
Undefined global functions or variables:
  abline approxfun as.formula binomial coef dnorm ecdf fitted glm knots
  legend lines lm median model.frame nlm optimize plot quantile sd tail
  terms var write.table
Consider adding
  importFrom("graphics", "abline", "legend", "lines", "plot")
  importFrom("stats", "approxfun", "as.formula", "binomial", "coef",
             "dnorm", "ecdf", "fitted", "glm", "knots", "lm", "median",
             "model.frame", "nlm", "optimize", "quantile", "sd", "terms",
             "var")
  importFrom("utils", "tail", "write.table")
to your NAMESPACE file.