Third Stage Unit (TSU), Segments Segments (street/block in urban areas and a village in rural areas) were the third stage unit. The field teams determined the TSU sampling frame for each SSU together with respective up to date number of households in each TSU with the assistance of respective ward/village tract authority. Two segments (clusters) per sample ward/village tract were then selected with PPS Systematic Sampling. Selection probability of TSU can be obtained as follows. Probabilty (TSU) = 2 * Total updated number of households in segment Total updated number of households in SSU Households For the selection of households from each sample segment (TSU), it was imperative that an exhaustive household listing operation be carried out in each segment. All the households in respective sample segment were listed with RHR using sample survey listing forms. 10 sample households were selected using circular systematic random sampling by the field supervisor who assigned sample households to the interviewers. Selection probability of households can be obtained as follows. 10 Probabilty (Household) = Total updated number of households listed in segment ICTs in Myanmar: 2016 99