cprd_uniform_hba1c_values: Transforms hba1c values to mmol/mol
Description
This function converts hba1c and fructosamine values to comon mmol/mol values
conversions: mmol/L, mg/dL, fructosamine
Assumes doctor miscoding for values < 20 after previous transformations
Usage
cprd_uniform_hba1c_values(df)
Arguments
df
a dataframe of hba1c test scores
Value
dataframe with all hba1c values recoded to mmol/mol
Details
The input dataframe must include the data2, data3 and enttype columns and the enttype must equal
either 275 (HbA1C) or 356 (Fructosamine)