Sampling Procedure
Sampling Design
In spite of a number of limitations, the list of Enumeration Areas (EA's) prepared for the 1991 Population Census, along with maps and data on households and population is the only available sampling frame to be used. The sampling design and procedure for selection of the first stage unit (fsu) were as follows:
a) Basically, a stratified multi-stage sampling design was adopted. Each district was a sub-stratum with further sub-stratification as district town, other urban areas and rural areas. There were 102 total strata. There was no further sub-stratification.
b) In those districts where information of Enumeration Areas (EA's) with mapping exercise had been completed during 1991 Population Census, there was two stage design with EA's as the first-stage units (fsu) and with households as the second or ultimate stage units. In other districts, a three stage sampling design was adopted with a parish as the fsu. LC 1 as second stage unit (ssu) and a household as the third or ultimate stage unit.
c) During UNHS 1996/97, all fsu's was selected afresh and practice of selecting common fsu's from earlier surveys was dispensed with. Fsu's from all the strata was selected with probability proportional to the number of households without replacement.
d) The total number of fsu's selected in Uganda as a whole was 624.
For districts without Census Maps fsu was a parish. LC 1's in the selected parishes was listed at the field stage and two LC 1's per parish was selected on the basis of simple random sampling without replacement. All the households in the selected LC 1's or EA's where two stage sampling was used and listed. 10 households selected in the basis of simple random sampling and surveyed for both socio-economic and labour force components. Community survey was done in all the LC 1's selected in three stage sampling and one LC 1 per EA in two stage sampling after listing and selecting one LC 1 on the basis of simple random sampling.