KIDDOBCDC_ET_ALL (B18_x) is a 5-digit numeric variable.

## Description

KIDDOBCDC_ET_ALL (B18_x) reports the century day code for the child's date of birth, according to the Ethiopian calendar. This variable is only available for Ethiopian samples.

Century day codes (CDC) 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. They are similar to century month codes (CMC), but century day codes provide additional detail.

According to the DHS Program's "Calculating the Age of Children More Precisely" documentation,

While KIDDOBCDC_ET_ALL is calculated basically the same way as INTDATECDC_ALL, using the number of days since 1900, KIDDOBCDC_ET_ALL uses the number of days since 1900 in the Ethiopian calendar. This corresponds to September 12, 1907 in the Gregorian calendar.

For more information about the calculation of century month codes, see INTDATECMC (V008).

## Comparability

KIDDOBCDC_ET_ALL (B18_x) has no comparability problems.

All standard date variables in the Ethiopian DHS samples are given in the Ethiopian calendar. The Ethiopian year consists of 365 days, divided into 12 months of 30 days and one month of 5 days (6 days in a leap year). According to the Gregorian calendar, in a non-leap year, the Ethiopian year begins September 11 and ends the following September 10. The 13th month of the Ethiopian calendar falls in early September. In general, the Ethiopian calendar is 92 months behind the Gregorian calendar.

Comparability - Standard DHS

KIDDOBCDC_ET_ALL (B18_x) is included as a standard recode variable beginning in Phase VII (for Ethiopian samples).

## Universe

- Ethiopia 2016: Women age 15-49 with at least one birth.