AIDLTCMC is a 4-digit variable.

9997 = Don’t know
9999 = NIU (not in universe)

Description

AIDLTCMC (V860C) reports the century month code (CMC) of the woman’s most recent test for HIV/AIDS.

The related variable AIDLTYR reports the year of the woman’s most recent test for HIV/AIDS.

The related variable AIDLTMO reports the month of the woman’s most recent test for HIV/AIDS.

Century month codes (CMC) are particularly useful for checking the consistency of dates, calculating intervals between events, and imputing dates when the information for an event is missing or partially complete.

Century month codes (CMC) are calculated by multiplying by 12 the difference between the year of an event and 1900. The year 1900 was chosen as the reference period because all of the DHS-relevant events occurred during the twentieth or twenty-first centuries. The month of the event is added to the previous result.

For example, the CMC for June 2002 is:

In other words, 1,230 months have elapsed between January 1900 and June 2002. Starting with CMC figures, one can calculate the month and year using the following formulas:

For more information, visit The DHS Program website to find the latest Guide to DHS Statistics.

Comparability

Apart from universe differences, AIDLTCMC (V860C) has no comparability issues.

Comparability - Standard DHS

AIDLTCMC (V860C) is first included in the standard DHS questionnaire in Phase VIII.

Universe