Demographic and Health Surveys Methodology - Measure DHS

More documents

Recommendations

Info

Based on the two recode files mentioned above, DHS creates and distributes files in flat or rectangularformats with SPSS, SAS and STATA data definitions for several units of analysis. Of course, hierarchicaldata files are also distributed for users familiar with ISSA or CSPro. The data can be downloaded fromthe DHS Web site or can be requested by mail. The following table shows the files available along withthe names that they are given for the Colombia 2000 Measure/DHS+ survey.File TypesUnit of AnalysisHouseholdWomenMenChildrenCouplesHierarchical Rectangular FlatCOHR41COIR41COMR41COHR41RTCOIR41RTCOMR41RTCOKR41RTCOCR41RTCOHR41FLCOIR41FLCOMR41FLCOKR41FLCOCR41FLIn general, the first two digits of the file name correspond to the country code. The next two digitsidentify the unit of analysis (HR–Household, IR–Women, MR–Male, KR–Children, and CR–couples).The fourth digit identifies the DHS phase. The fifth digit identifies the data release number (when a newversion of the country recode file is created a new release number is assigned). Finally, the last two digitsidentify whether it is a rectangular (RT) or flat (FL) file; for the hierarchical file they are left blank.Variables in the recode file begin with one or two letters followed by one, two, or three digits and in somecases followed by a letter. Following is a list describing the general variable name conventions.• HVxxx - Household standard variables- HAxx - Anthropometry and anemia for women- HCxx - Anthropometry and anemia for children- SHxxx - Household, country-specific.• Vxxx - Women standard variables- Bxx - Birth history- Mxx - Pregnancy, postnatal care, and breastfeeding- Hxx - Immunization and health- HWxx - Anthropometry for children of eligible women- MMxx - Maternal mortality (optional)- DVxx - Domestic violence (optional)- Sxxx - Women, country-specific• MVxxx - Men standard variables- SMxx - Men, country-specificGuide to DHS Statistics 9 September 2003
In this list “xx” represent digits, and the last one could be a letter. There are a handful of variables that donot fully adhere to this scheme (BORD, BIDX, MIDX, HWIDX, etc.), but at least the first letter willindicate where it belongs. The “xx” in the household, women, and men country-specific variablescorrespond to the actual question number in the country questionnaire. The maternal mortality (MMxx)and domestic violence (DVxx) variables will only be present if the modules were applied in the country.If the calendar was used in the country, variables VCOL and VCAL will be present. These variables arepart of a repeating record. VCOL is the calendar column number and VCAL is a string of 80 characterscontaining the actual calendar information.Missing Values and Other Special CodesIn DHS, a missing value is defined as a variable that should have a response, but because of interviewerrors the question was not asked. For example, questions 111 and 112 must be answered by women withno education or only primary school education. If the interviewer incorrectly marked question 110 assecondary school or higher when in fact the respondent only completed primary school, questions 111 and112 do not get asked. The general rule for DHS data processing is that “UNDER NOCIRCUMSTANCES AN ANSWER SHOULD BE MADE UP;” instead a missing value will be assigned.The data will be kept as missing in the data file and no imputation for this kind of questions is assigned.As will be discussed below, only the seven dates related to women’s chronological events are imputed.Missing values in general are codes 9, 99, 999, 9999, etc. depending on the variable number of digits.There are however some important background variables where the missing code is not accepted:• Geographical variables such as Urban/rural (HV025, V025, MV025, V102, MV102), regions(HV024, V024, V101, MV101), and in general any other variable whose value can be established bythe sample design• Level of education for women and men in the individual questionnaire (V106, MV106)• Current use of contraception for women (V312)• Current marital status of women (V501)• Variables related to the woman’s birth history (V201 to V210, B0, B4, B5, B9).It is possible that earlier phases of DHS may have missing values in some of these variables.Another special code used for data cleaning purposes is code “Inconsistent.” This code is generally usedby people in the secondary editing group, when a value or code is not plausible. For example, dates forvaccinations recorded as having occurred before the birth of the child. The value is not missing but is notpossible. The secondary editing group is instructed to find out what piece of information is wrong (day,month, or year) and assign code “Inconsistent” to it. This of course is done after checking for clues thatcould lead to correct the problem.Inconsistent codes are 7, 97, 997, etc., depending on the variable number of digits.Codes 8, 98, 998 are assigned to “don’t know” responses. These codes are normally pre-coded in thequestionnaires, but they are consistently used throughout the recode file.Finally, BLANKS in a variable represent not applicable for the respondent either because the questionwas not asked in a particular country or because the question was not asked of this respondent due to theflow or skip pattern of the questionnaire.Guide to DHS Statistics 10 September 2003
Page 1 and 2: Guide to DHS statisticsDemographic
Page 3 and 4: GUIDE TO DHS STATISTICSShea Oscar R
Page 5 and 6: Preferred Method of Contraception f
Page 7 and 8: ForewordDHS surveys collect a wealt
Page 9 and 10: MODEL QUESTIONNAIRESThe basic appro
Page 11 and 12: The Guidelines for the Main Survey
Page 13 and 14: The figure on the previous page ill
Page 15: Before using an exported DHS data f
Page 19 and 20: At data entry time, contrary to the
Page 21 and 22: CalculationInitial sample weights a
Page 23 and 24: DHS uses century month codes extens
Page 25 and 26: AgeTotal ChildrenTotal ChildrenSmoo
Page 27 and 28: All Women Ever-Married Women All Wo
Page 29 and 30: it is not possible to merge the hou
Page 31 and 32: ename = (HVIDX$01, HV101$01, HV102$
Page 33 and 34: III. Guide to Individual Statistics
Page 35 and 36: Births in the month of interview ar
Page 37 and 38: Statistics: Total Fertility RateDef
Page 39 and 40: Statistics: Crude Birth RateDefinit
Page 41 and 42: CHILDREN EVER BORN AND LIVINGStatis
Page 43 and 44: BIRTH INTERVALSStatistics: Percent
Page 45 and 46: AGE AT FIRST BIRTHStatistics: Perce
Page 47 and 48: TEENAGE PREGNANCY AND MOTHERHOODSta
Page 49 and 50: 4. Traditional methods: The number
Page 51 and 52: CURRENT USE OF CONTRACEPTIVE METHOD
Page 53 and 54: Changes over TimeThe list of specif
Page 55 and 56: Median: Women with a missing value
Page 57 and 58: KNOWLEDGE OF THE FERTILE PERIODStat
Page 59 and 60: Statistics: Median Age at Contracep
Page 61 and 62: INFORMED CHOICEStatistics:A. Percen
Page 63 and 64: B. In the standard recode file, the
Page 65 and 66: REASONS FOR DISCONTINUING CONTRACEP
Page 67 and 68:
FUTURE USE OF CONTRACEPTIONStatisti
Page 69 and 70:
PREFERRED METHOD OF CONTRACEPTION F
Page 71 and 72:
CONTACT OF NONUSERS WITH FAMILY PLA
Page 73 and 74:
ATTITUDES TOWARD FAMILY PLANNINGSta
Page 75 and 76:
NUMBER OF CO-WIVESStatistics: Perce
Page 77 and 78:
MEDIAN AGE AT FIRST MARRIAGEDefinit
Page 79 and 80:
Statistics: Median Age at First Sex
Page 81 and 82:
B. Denominator: Number of all birth
Page 83 and 84:
Notes and ConsiderationsAssumptions
Page 85 and 86:
FERTILITY PREFERENCESNEED FOR FAMIL
Page 87 and 88:
ii. Say they do not know whether th
Page 89 and 90:
NEED FOR FAMILY PLANNING—NOT CURR
Page 91 and 92:
5. Unmet need for spacing.a) Includ
Page 93 and 94:
AssumptionsWomen who are not curren
Page 95 and 96:
1. Higher age group: A woman’s ag
Page 97 and 98:
INFANT AND CHILD MORTALITYEARLY CHI
Page 99 and 100:
Statistics: Neonatal Mortality Rate
Page 101 and 102:
MORTALITY RATE CALCULATIONNeonatal
Page 103 and 104:
Statistics: Perinatal Mortality Rat
Page 105 and 106:
HIGH-RISK FERTILITY BEHAVIOR RISK R
Page 107 and 108:
MATERNAL AND CHILD HEALTHANTENATAL
Page 109 and 110:
Handling of Missing Values“Don’
Page 111 and 112:
ANTENATAL CAREPrenatal tetanus toxo
Page 113 and 114:
DELIVERY CAREStatistics: Percent Di
Page 115 and 116:
POSTNATAL CAREStatistics: Percent D
Page 117 and 118:
Calculation5. All vaccinations—ch
Page 119 and 120:
CHILD MORBIDITY PREVALENCE AND TREA
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
CHILDHOOD MORBIDITY PREVENTION: DIA
Page 127 and 128:
WOMEN’S USE OF SMOKING TOBACCOSta
Page 129 and 130:
Handling of Missing ValuesExcluded
Page 131 and 132:
Decisions on AlternativesAn alterna
Page 133 and 134:
Respondents with missing reports fo
Page 135 and 136:
C. Denominators:Calculation1. Numbe
Page 137 and 138:
C. Denominators:Calculation1. Numbe
Page 139 and 140:
B. Numerators:1. Number of days bre
Page 141 and 142:
MICRONUTRIENT INTAKE AMONG CHILDREN
Page 143 and 144:
MICRONUTRIENT INTAKE AMONG WOMENSta
Page 145 and 146:
CHILDREN’S AND WOMEN’S NUTRITIO
Page 147 and 148:
CHILDREN’S AND WOMEN’S NUTRITIO
Page 149 and 150:
ReferencesCenters for Disease Contr
Page 151 and 152:
CalculationA. The assignment of ant
Page 153 and 154:
ReferencesNational Center for Healt
Page 155 and 156:
Changes Over TimeIn phases of the D
Page 157 and 158:
HIV/AIDS/STDSHIV/AIDS PREVENTION KN
Page 159 and 160:
CONDOM USE AT LAST SEXStatistics: P
Page 161 and 162:
. Denominator (exposure): [Example
Page 163 and 164:
ADULT MORTALITY (DIRECT METHOD)Stat
Page 165 and 166:
ADULT MORTALITY (INDIRECT METHOD)St
Page 167:
Another important issue is location
show all

Demographic and Health Surveys Methodology - Measure DHS

Create successful ePaper yourself

Delete template?

Save as template?