Adjust 'ic' coverage data

Make adjustments to vaccination coverage to ensure reported coverages preserve the ratio of multi-dose vaccines and that coverage is >0% and <100%.

ic_adjust(
  X,
  ratio_adj = FALSE,
  numerator = "DTP3",
  denominator = "DTP1",
  coverage_adj = TRUE
)

ic_ratio(X, numerator = "DTP3", denominator = "DTP1")

Arguments

X	Object of class ic.df to adjust
ratio_adj	Logical. Should multi-dose vaccine coverages be adjusted by their ratio when coverage > 100%? Default is FALSE.
numerator	Character vector of vaccine identifiers (with dose numbers) to calculate the ratio adjustment. Default is 'DTP3'.
denominator	Character vector of vaccine identifiers (with dose numbers) to calculate the ratio adjustment. Default is 'DTP1'.
coverage_adj	Logical. Should coverage percentage be changed to be >0% and <100%? Default is TRUE.

Details

This function provides minimal adjustments to immunisation data to ensure that the coverages are suitable for statistical modelling. Ratio adjustments help to ensure that multi-dose vaccines report a coverage that is less-than-or-equal-to the coverage of the first dose.

Coverage adjustment accounts for inaccurate target populations that result is coverages of >100%. By maintaining a coverage between 0 and 100% a logistic transformation can be used in the statistical model.

See also

ic_data