Demographic and Health Survey and Malaria Indicator Survey 2015-16

Tanzania, 2015 - 2016

Reference ID

TZA_2015_DHS-MIS_v01_M_v01_A_IPUMS

Producer(s)

Ministry of Health, Community Development, Gender, Elderly and Children [Tanzania], Ministry of Health [Zanzibar], National Bureau of Statistics [Tanzania], Office of the Chief Government Statistician, and ICF, Minnesota Population Center

Metadata

DDI/XML JSON

Created on

Sep 19, 2018

Last modified

Sep 19, 2018

Page views

33180

Century month date of interview (W_INTDATECMC)

Data file: TZA2015-W

Overview

Valid: 0

Invalid: 0

Type: Continuous

Decimal: 0

Format:

Description

Definition

INTDATECMC (V008) reports century month code for the date on which the interview took place.

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.].

The century month codes reported in INTDATECMC are calculated using the Gregorian calculator.

concept

Concept

Name	Vocabulary
Survey dates Variables -- PERSON	IPUMS

Back to Catalog