Any anti-hypertensive medications — is_any_antiHTN

This function checks if a given medication for a CHMS respondent belongs to any anti-hypertensive drug class. The identification is based on the Anatomical Therapeutic Chemical (ATC) code of the medication and the time when the medication was last taken.

Usage

is_any_antiHTN_med(MEUCATC, NPI_25B)

Arguments

MEUCATC: A character vector representing the Anatomical Therapeutic Chemical (ATC) code of the medication.
NPI_25B: An integer representing the CHMS response for the time when the medication was last taken. 1 = Today, 2 = Yesterday, 3 = Within the last week, 4 = Within the last month, 5 = More than a month ago, 6 = Never taken

Value

A numeric, 1 if medication is in any anti-hypertensive drug class and 0 if it is not.

Details

This function first identifies any anti-hypertensive drugs based on their ATC codes using the regular expression "C02-3" and "CO7-9" which matches ATC codes that start with "C02", "C03", "C07", "C08", and "C09". Specific sub-codes 'C07AA07', 'C07AA12', 'C07AG02', 'C03BA08', 'C03CA01', and 'C02KX01' are excluded from the class. If the ATC code matches the pattern and is not in the exclusion list, and the medication was taken within the last month (NPI_25B <= 4), the medication is considered an anti-hypertensive drug, and the function returns TRUE. Otherwise, it returns FALSE.

Examples


# Let's say the ATC code is "C07AB02" and the time last taken was within last month (4).

is_any_antiHTN_med("C07AB02", 4) # Should return 1 (TRUE)
#> [1] 1