Page 206 - Contributed Paper Session (CPS) - Volume 7

CPS2062 Nurul Fatihah M. et al.
2. Methodology

Determine Carry out Clean and Produce
sample size survey validate data result

Step 1: Determining the sample size
The process of determining the sample size is required to represent
overall population at the analysis level. The sample size has been
considered the following elements:
-Findings from previous HES report
-Level of sampling design; and
-Desired error
Procedures for estimating the sample size is calculated independently
in each stratum (urban and rural). Simple Random Sampling Method (SRS)
is used to take into account the design effect from the previous
investigation, response rate and level of study. The optimum sample size
was estimated at the level of EBs with regard to homogeneity characteristic
variables and the costs involved.
Sample size calculation for sub population j, is calculated as in
1
Equation 2.1:

1 = 0 ; j = 1, 2, 3, …, k
1+ 0 (2.1)

where;
the number of element units in the population;
and can be calculated as:
0
2
(1 − )

0 = (2.2)
2
where;
level of confidence
labour force participation rate
desired error.
To satisfy the assumptions in the Stratified Sampling, Equation 2.3 was
used where the design effect (D.E.) factor is taken into account:

. . = (2.3)

Sample size taking into account D.E. for sub population j, is given as in
2
Equation 2.4:
2 = 1 × . . (2.4)

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