Sampling Procedure
The sample design for the DTS 2023 was based on a Master Sample (MS) that was originally designed for the Quality Labour Force Survey (QLFS). This Master Sample is shared by the QLFS, General Household Survey (GHS), Living Conditions Survey (LCS), Domestic Tourism Survey (DTS), Income and Expenditure Survey (IES), and Victims of Crime Survey (VOCS).
The Master Sample used a two-staged, stratified design with probability-proportional-to-size (PPS) sampling of PSUs from within strata, and systematic sampling of dwelling units (DUs) from the sampled primary sampling units (PSUs). A self-weighting design at provincial level was used. Stratification was done in two stages: Primary stratification was defined by metropolitan and non-metropolitan geographic area type. During secondary stratification, the Census 2001 data were summarised at PSU level. The following variables were used for secondary stratification: household size, education, occupancy status, gender, industry, and income.
Weighting
Sampling weights were constructed for the 12 reference months. These included both full sample and replicate weights for each of the 12 reference months. The full sample and replicate weights were calibrated using the population control totals for the cells defined by the cross-classification Age-Group x Population-Group x Gender at the national level, and broad Age-Groups at the province level. These are the same population control totals that are used for constructing the calibrated weights for the Quarterly Labour Force Survey and the other household surveys.
