deming: no visible global function definition for ‘terms’
deming: no visible global function definition for ‘model.extract’
deming: no visible global function definition for ‘model.response’
deming: no visible global function definition for ‘model.weights’
deming: no visible global function definition for ‘model.matrix’
deming: no visible global function definition for ‘qnorm’
deming.fit1: no visible global function definition for ‘lm.wfit’
deming.fit1: no visible global function definition for ‘optimize’
deming.fit2: no visible global function definition for ‘optimize’
pbreg: no visible global function definition for ‘terms’
pbreg: no visible global function definition for ‘model.matrix’
pbreg: no visible global function definition for ‘model.response’
pbreg: no visible global function definition for ‘model.weights’
pbreg : bfun: no visible global function definition for ‘rbinom’
pbreg: no visible global function definition for ‘var’
pbreg.fit : wtmed: no visible global function definition for ‘approx’
pbreg.fit: no visible global function definition for ‘median’
pbreg.fit: no visible global function definition for ‘qnorm’
pbreg.fit: no visible global function definition for ‘approx’
print.deming: no visible global function definition for ‘naprint’
print.pbreg: no visible global function definition for ‘naprint’
print.thielsen: no visible global function definition for ‘naprint’
theilsen.fit : wtmed: no visible global function definition for
  ‘approx’
theilsen.fit: no visible global function definition for ‘median’
theilsen.fit: no visible binding for global variable ‘mad’
theilsen.fit: no visible global function definition for ‘qnorm’
theilsen.fit: no visible global function definition for ‘approx’
thielsen: no visible global function definition for ‘terms’
thielsen: no visible global function definition for ‘model.matrix’
thielsen: no visible global function definition for ‘model.response’
thielsen: no visible global function definition for ‘model.weights’
thielsen : wild: no visible global function definition for ‘rbinom’
thielsen: no visible global function definition for ‘var’
Undefined global functions or variables:
  approx lm.wfit mad median model.extract model.matrix model.response
  model.weights naprint optimize qnorm rbinom terms var
Consider adding
  importFrom("stats", "approx", "lm.wfit", "mad", "median",
             "model.extract", "model.matrix", "model.response",
             "model.weights", "naprint", "optimize", "qnorm", "rbinom",
             "terms", "var")
to your NAMESPACE file.