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A stratified two-stage sample design was used for the AMICS. The primary sampling units
(PSUs) are the enumeration areas (EAs), which are segments with well-defined boundaries
delineated by the CSO within each administrative unit for the purposes of census enumeration.
The EAs have an average of about 185 households each, which is a reasonable size for
conducting a new listing of households. The sampling frame has a total of 21,194 EAs covering
the territory of Afghanistan. The frame was based on a quick count of the households and
population in each EA that the CSO had previously conducted in preparation for the census.
For the calculation of the sample size, the key indicator used was the rate of fully immunized
children from 12 to 23 months.
The urban and rural areas within each region were identified as the main sampling strata and
the sample was selected in two stages. Within each stratum, a specified number of EAs were
selected systematically with probability proportional to size as the first stage. After a household
listing was carried out within the selected EAs, a systematic sample of 30 households was
drawn in each sample EA as the second stage. The selection of 30 households per sample EA
was based on the consideration of the high costs of transportation, logistics for the fieldwork,
and cost-effective cluster size.
Sample Coverage
Table 2.1 shows the number of households, women, men, and children under five by results of
the household, women's, men's and under-5's interviews, and household, women's, men's and
under-5's response rates.
Table 2.1: Results of household, women's, men's and under-5 interviews
Number of households, women, men, and children under 5 by results of the household, women's, men's and under-5's interviews, and household,
women's, men's and under-5's response rates, Afghanistan, 2010-2011
Households
Residence
Urban Rural Central
Central
Highlands
East
Region
Sampled 3,681 9,787 2,763 1,203 1,591 1,949 1,831 1,352 1,314 1,465 13,468
Visited 3,634 9,680 2,717 1,174 1,586 1,932 1,819 1,340 1,309 1,437 13,314
Interviewed 3,545 9,571 2,626 1,164 1,571 1,922 1,811 1,309 1,280 1,433 13,116
Household response rate 97.6 98.9 96.7 99.1 99.1 99.5 99.6 97.7 97.8 99.7 98.5
Women
Eligible 5,962 16,091 4,650 1,907 2,320 2,935 3,265 2,251 2,809 1,916 22,053
Interviewed 5,740 15,550 4,423 1,781 2,276 2,904 3,222 2,228 2,597 1,859 21,290
Women's response rate 96.3 96.6 95.1 93.4 98.1 98.9 98.7 99.0 92.5 97.0 96.5
Women's overall response
rate 93.9 95.5 91.9 92.6 97.2 98.4 98.2 96.7 90.4 96.8 95.1
Children under 5
Eligible 3,633 11,694 2,795 1,402 1,834 2,112 2,165 1,469 2,302 1,248 15,327
Mothers/caretakers
interviewed 3,529 11,343 2,703 1,321 1,814 2,104 2,134 1,450 2,131 1,215 14,872
Under-5's response rate 97.1 97.0 96.7 94.2 98.9 99.6 98.6 98.7 92.6 97.4 97.0
Under-5's overall response
rate 94.8 95.9 93.5 93.4 98.0 99.1 98.1 96.4 90.5 97.1 95.6
North
North
East
South
South
East
West
Total
7