ageadjust.direct: no visible global function definition for ‘qgamma’
ageadjust.indirect: no visible global function definition for ‘qnorm’
binom.approx: no visible global function definition for ‘qnorm’
binom.exact: no visible global function definition for ‘binom.test’
binom.wilson: no visible global function definition for ‘qnorm’
colorbrewer.display: no visible global function definition for
  ‘matplot’
colorbrewer.display: no visible global function definition for ‘rect’
colorbrewer.display: no visible global function definition for ‘points’
colorbrewer.display: no visible global function definition for ‘rgb’
colorbrewer.display: no visible global function definition for ‘text’
colorbrewer.display: no visible global function definition for ‘abline’
colorbrewer.display: no visible global function definition for ‘axis’
colorbrewer.display: no visible global function definition for ‘title’
colorbrewer.palette: no visible global function definition for ‘rgb’
colors.matrix: no visible global function definition for ‘colors’
colors.plot: no visible global function definition for ‘matplot’
colors.plot: no visible global function definition for ‘title’
colors.plot: no visible global function definition for ‘points’
colors.plot: no visible global function definition for ‘colors’
colors.plot: no visible global function definition for ‘axis’
epicurve.dates: no visible global function definition for ‘barplot’
epicurve.dates: no visible global function definition for ‘axis’
epicurve.hours: no visible global function definition for ‘barplot’
epicurve.hours: no visible global function definition for ‘axis’
epicurve.months: no visible global function definition for ‘barplot’
epicurve.months: no visible global function definition for ‘axis’
epicurve.table: no visible global function definition for ‘barplot’
epicurve.table: no visible global function definition for ‘axis’
epicurve.weeks: no visible global function definition for ‘barplot’
epicurve.weeks: no visible global function definition for ‘axis’
expand.table: no visible global function definition for ‘ftable’
oddsratio.fisher: no visible global function definition for
  ‘fisher.test’
oddsratio.small: no visible global function definition for ‘qnorm’
oddsratio.wald: no visible global function definition for ‘qnorm’
or.midp : mue: no visible global function definition for ‘fisher.test’
or.midp : midp: no visible global function definition for ‘fisher.test’
or.midp: no visible global function definition for ‘uniroot’
ormidp.test: no visible global function definition for ‘fisher.test’
pois.approx: no visible global function definition for ‘qnorm’
pois.byar: no visible global function definition for ‘qnorm’
pois.daly : cipois: no visible global function definition for ‘qgamma’
pois.exact : f1: no visible global function definition for ‘ppois’
pois.exact : f2: no visible global function definition for ‘ppois’
pois.exact : f2: no visible global function definition for ‘dpois’
pois.exact: no visible global function definition for ‘uniroot’
rate2by2.test: no visible global function definition for ‘dbinom’
rate2by2.test: no visible global function definition for ‘pbinom’
rate2by2.test: no visible global function definition for ‘pnorm’
rate2by2.test: no visible global function definition for ‘pchisq’
rateratio.midp: no visible global function definition for ‘uniroot’
rateratio.midp : <anonymous>: no visible global function definition for
  ‘dbinom’
rateratio.midp : <anonymous>: no visible global function definition for
  ‘pbinom’
rateratio.wald: no visible global function definition for ‘qnorm’
riskratio.boot: no visible global function definition for ‘qnorm’
riskratio.boot : rr.boot: no visible global function definition for
  ‘rbinom’
riskratio.boot : rr.boot: no visible global function definition for
  ‘quantile’
riskratio.small: no visible global function definition for ‘qnorm’
riskratio.wald: no visible global function definition for ‘qnorm’
tab2by2.test: no visible global function definition for ‘fisher.test’
tab2by2.test: no visible global function definition for ‘chisq.test’
Undefined global functions or variables:
  abline axis barplot binom.test chisq.test colors dbinom dpois
  fisher.test ftable matplot pbinom pchisq pnorm points ppois qgamma
  qnorm quantile rbinom rect rgb text title uniroot
Consider adding
  importFrom("grDevices", "colors", "rgb")
  importFrom("graphics", "abline", "axis", "barplot", "matplot",
             "points", "rect", "text", "title")
  importFrom("stats", "binom.test", "chisq.test", "dbinom", "dpois",
             "fisher.test", "ftable", "pbinom", "pchisq", "pnorm",
             "ppois", "qgamma", "qnorm", "quantile", "rbinom", "uniroot")
to your NAMESPACE file.