R check showing unresolved notes

[schuemie]

I see:

* checking R code for possible problems ... [14s/14s] NOTE
computeStandardizedDifference: no visible binding for global variable
  ‘cohortDefinitionId’
filterByRowId: no visible binding for global variable ‘rowId’
tidyCovariateData: no visible binding for global variable ‘covariateId’
tidyCovariateData: no visible binding for global variable
  ‘covariateValue’
tidyCovariateData: no visible binding for global variable ‘maxValue’
tidyCovariateData: no visible binding for global variable ‘nDistinct’
tidyCovariateData: no visible binding for global variable ‘timeId’
tidyCovariateData: no visible binding for global variable ‘analysisId’
Undefined global functions or variables:
  analysisId cohortDefinitionId covariateId covariateValue maxValue
  nDistinct rowId timeId

Should be easy to fix these