Demographic and Health Survey 2016 - IPUMS Subset

South Africa, 2016

Reference ID

ZAF_2016_DHS_v01_M_v01_A_IPUMS

Producer(s)

National Department of Health (NDoH) [South Africa], Statistics South Africa (Stats SA), South African Medical Research Council (SAMRC), and ICF., Minnesota Population Center

Metadata

DDI/XML JSON

Created on

Jan 16, 2021

Last modified

Jan 16, 2021

Page views

64000

Respondent's date of birth, in century months (C_DOBCMC)

Data file: ZAF2016-C.dat

Overview

Type: Continuous

Decimal: 0

Start: 273

End: 276

Width: 4

Range: -

Format: Numeric

Description

Definition

DOBCMC (V011) reports the century month code (CMC) for the woman's date of birth.

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.

CMC = (Year - 1900) * 12 + Month

For example, the CMC for June 2002 is:

CMC = (2002 - 1900) * 12 + 6 = 1230

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:

Year = int( ( CMC - 1 )/12 ) + 1900
[int(x) is the integer part of x]
Month = CMC - ( ( Year - 1900 ) * 12 )

The information above is based on "Online Guide to DHS Statistics" (Rutstein and Rojas, 2006) [URL omitted from DDI.].

concept

Concept

var_concept.title	Vocabulary
Core demographic Variables -- TOPICS	IPUMS

Imputation and derivation

Derivation

DOBCMC (V011) is a 4-digit variable.

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