Introduction Sample frame Sample size Stratification
IV.1 Introduction
The sampling design of the ALCS 2013-14 was developed to produce results that are statistically reliable for most of the indicators at national and provincial level. In addition, the aim of the sampling design was to have representative estimates by season according to the Shamsi calendar used in Afghanistan, 65 in order to capture seasonal fluctuations in a number of key indicators. The design developed for the 2013-14 survey round was a stratified, two-stage cluster approach. The sample distribution is sufficiently close to the national urban-rural distribution that separate analysis for these populations is justified.IV.2 Sample frame
The pre-census household listing that was conducted by CSO in 2003-05, updated in 2009 was used as the sampling frame. For three provinces, the sampling frame consisted of the Socio-Demographic and Economic Survey SDES household listings: Bamyan data collected in 2010, Ghor and Daykundi both with data collected in 2012. Prior to the fieldwork, the selected EAs – urban and rural – were visited for a mapping update of the households, on the basis of which the second sampling stage was implemented. The sampling frame that was used for the Kuchi population was the 2003-04 National Multi-sectoral Assessment of Kuchi NMAK-2004. Although far from perfect given the rate of settlement of Kuchis in recent years and ongoing discussion about the definition of Kuchi, this is the best frame available for this part of Afghanistan’s population.IV.3 Sample size
Analysis of previous NRVA rounds showed that a sample size of around 21 thousand households with a cluster size of ten households would produce sufficiently reliable estimates for most variables. Consequently, this sample size was maintained as the standard the 2013-14 ALCS.IV.4 Stratification
The sample was stratified into 35 analytical domains: one for each of the 34 provinces of Afghanistan and one for the Kuchi population. For an optimal sample allocation across the provinces, a balance was obtained between proportional allocation and equal-size allocation with a Kish power allocation of I = 0.25. This assured sufficient weight for provinces with small populations, while improving the comparability of results across the provinces. Since the provincial sub-samples were equally distributed over 12 survey months, the four seasons also become separate analytical domains. The Kuchi stratum was only divided into the 2013-14 Shamsi calendar 1392 winter and 2014 1393 summer season in view of the practical difficulty of locating migrating communities in spring and autumn. 65 For conversion of Shamsi season dates, see Annex VII. 269IV.5 Cluster size and number of clusters
Parts
» ALCS 2013 14 Main Report English 20151222
» Introduction Stakeholder involvement ALCS 2013 14 Main Report English 20151222
» Questionnaire design ALCS 2013 14 Main Report English 20151222
» Pilot training and pilot survey Training and selection of field staff
» Sampling design ALCS 2013 14 Main Report English 20151222
» Field operations ALCS 2013 14 Main Report English 20151222
» Analysis ALCS 2013 14 Main Report English 20151222
» Comparability of results ALCS 2013 14 Main Report English 20151222
» Data limitations Reporting ALCS 2013 14 Main Report English 20151222
» Sex ratio Population structure
» Household structure Household composition
» Marital status distribution Marriage patterns
» The marriage age gap Polygamy
» Afghanistan’s migration context
» Internal recent migrants The stock of internal recent migrants
» Immigrants and immigration International migration
» The migration balance ALCS 2013 14 Main Report English 20151222
» Origins and destinations of returnees
» Living conditions of returnees
» Introduction ALCS 2013 14 Main Report English 20151222
» Labour force participation ALCS 2013 14 Main Report English 20151222
» Overview of employment, underemployment and unemployment
» Comparison over time percent
» Characteristics of the employed and underemployed
» percent ALCS 2013 14 Main Report English 20151222
» Characteristics of labour migrants
» Migrants’ labour market performance
» Prevalence of child labour and their conditions of work
» Causes and consequences of child labour
» Household chores and child labour
» Irrigated land Farming and horticulture
» Rain-fed land Farming and horticulture
» Farming input Farming and horticulture
» Horticulture Farming and horticulture
» Sale of animals and animal products Livestock production factors
» Introduction Introduction ALCS 2013 14 Main Report English 20151222
» Measuring poverty trends using survey to survey imputation Growth and distribution
» Demographic characteristics Household head characteristics
» Characteristics of children in the household
» Conclusion ALCS 2013 14 Main Report English 20151222
» Distribution by residence Distribution by region and province
» Characterisation by asset ownership Characterisation by demographics
» Harvest and lean season’s differences
» Sources of food items by main income source Sources of food items by season
» Coping with shocks ALCS 2013 14 Main Report English 20151222
» Educational attendance in residence and gender perspective
» Developments in educational attendance
» Transitions in the education career
» School-life expectancy Population not attending education
» percent Educational attainment ALCS 2013 14 Main Report English 20151222
» Literacy ALCS 2013 14 Main Report English 20151222
» Sex Gender equity indicators percent percent percent
» Developments in literacy levels
» Sex Introduction ALCS 2013 14 Main Report English 20151222
» Access to health services and care-seeking behaviour
» Maternal health ALCS 2013 14 Main Report English 20151222
» percent percent percent ALCS 2013 14 Main Report English 20151222
» Breastfeeding ALCS 2013 14 Main Report English 20151222
» Head of household In the ALCS 2013-
» Educational attainment The gender education gap
» Women in the labour force percent
» Decision making ALCS 2013 14 Main Report English 20151222
» Seclusion ALCS 2013 14 Main Report English 20151222
» Women and development ALCS 2013 14 Main Report English 20151222
» Tenancy and dwelling characteristics
» Other household amenities percent
» percent CSO staff ICON Steering Committee
» Technical Advisory Committee Chapter authors
» Relationship to head of household Marital status 1 = Married
» Introduction Sample frame Sample size Stratification
» Cluster size and number of clusters Sampling stages and selection process
» Sample design implementation ALCS 2013 14 Main Report English 20151222
» Resident population Calculation of sampling weights and post-stratification
» Weights variables The values of the final household sample weight hw
» Data ALCS 2013 14 Main Report English 20151222
» Model development ALCS 2013 14 Main Report English 20151222
» Model selection: cross-validation ALCS 2013 14 Main Report English 20151222
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