Page 372 - Invited Paper Session (IPS) - Volume 2

IPS280 VEUN, Thy et al.

Sampling design proposal for Household Survey
in Cambodia with provincial domain
2
Thy Veun , Erniel B. Barrios , Kevin Carl P. Santos 2
1
1 Deputy Director, National Institute of Statistics, Ministry of Planning, Phnom Penh, Cambodia
2 University of the Philippines-Diliman

Abstract
A sampling design for household surveys with provinces as domain is deemed
necessary because the estimates of households/person characteristics at
granulated levels rather than the national and regional levels are increasingly
becoming important. In this paper, a new sampling design for the household
survey in Cambodia with provincial domain is proposed. In this sampling
design, a further stratification within each province using the number of
households in each village is introduced in addition to the sampling designs
that have been used in the current practices of the household surveys in
Cambodia. In this stratification, each provincial frame, which contains the list
of villages, of Cambodia is stratified into five strata, and three methods are
used to determine the strata boundaries for each province. These methods are
(i) the generalized Lavallée and Hidiroglou (1988) method with Kozak
algorithm, (ii) the cumulated root frequency method of Dalenius and Hodges
(1959), and (iii) the geometric stratification of Gunning and Horgan (2004).
Three levels of required precision (1%, 3%, and 5% CV) are used in conjunction
with Neyman allocation to determine the sample size in each stratum and its
associated boundaries. Only four among the nine sets of samples from the
said stratification with the lowest sample size are finally proposed. The results
show that the required sample size in each province and in the whole country
is greatly reduced when compared with the case when no further stratification
within each province is done. Similarly, the results from the assessment on the
performance of the new proposed design using the sample data from the 2014
Cambodia Socio-Economics Survey are also found to be acceptable within a
precision level.

Keywords
Stratification; generalized Lavallée and Hidiroglou method with Kozak
algorithm; cumulated square root method; geometric stratification; stratum
boundary

1. Introduction
A sampling design for household surveys with provinces as domain is
deemed necessary because the estimates of households/person
characteristics at granulated levels rather than the national and regional levels
359 | I S I W S C 2 0 1 9