# Palestine - Expenditure and Consumption Survey 2009

Reference ID | Palestine-PCBS-PECS-2009-Version 1.0 |

Year | 2009 - 2010 |

Country | Palestine |

Producer(s) | Palestinian Central Bureau of Statistics - Palestinian National Authority |

Sponsor(s) | The Palestinian National Authority - PNA - Financial assistance The Core Funding Group - CFG - Financial assistance Swiss Agency for Development and Cooperation - SDC - Financial assistance |

Created on

Sep 22, 2011

Last modified

Sep 22, 2011

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201469

Sampling

Sampling Procedure

Sample and Frame:

The sampling frame consists of all enumeration areas which were enumerated in 2007, each numeration area consists of buildings and housing units with average of about 120 households in it. These enumeration areas are used as primary sampling units PSUs in the first stage of the sampling selection.

Sample Design:

The sample is a stratified cluster systematic random sample with two stages:

First stage: selection of a systematic random sample of 191 enumeration areas.

Second stage: selection of a systematic random sample of 24 households from each enumeration area selected in the first stage.

Note: in Jerusalem Governorate (J1), 13 enumeration areas were selected; then in the second phase, a group of households from each enumeration area were chosen using census-2007 method of delineation and enumeration. This method was adopted to ensure household response is to the maximum to comply with the percentage of non-response as set in the sample design.

Enumeration areas were distributed to twelve months and the sample for each quarter covers sample strata (Governorate, locality type)

Sample strata:

The population was divided by:

1- Governorate

2- Type of Locality (urban, rural, refugee camps)

Sample Size:

The calculated sample size for the Expenditure and Consumption survey 2009 is about 3,848 households, 2,654 households in West Bank and 1,194 households in Gaza Strip.

Response Rate

The survey sample consists of about 4,699 households of which 3,627 households completed the interview; whereas 2,654 households from the West Bank and 973 households in Gaza Strip. Weights were modified to account for non-response rate. The response rate in the West Bank reached 85.5% while in the Gaza Strip it reached 67%. The response rate in the Palestinian Territory reached 79.57%.

Weighting

Calculation of Households Weights:

The weight of statistical unit (sampling unit) in the sample is defined as the mathematical inverse of the selection probability. The sample of the survey is two stage stratified cluster sample, thus, the weights are calculated for each stage and the Households Weights is the multiplication of the two weights.

First stage weight:

The sample of enumeration areas is selected and the weight is called enumeration area weight (the sampling unit is enumeration area).The weight for enumeration areas from stratum h is calculated by dividing the number of enumeration areas in stratum h on the sample size of enumeration areas in stratum h.

Second stage weight:

The sample of households is selected and the weight is called household weight (the sampling unit is household). The weight of the Household from enumeration area (cluster) k is calculated by dividing the number of households in each cluster with the sample size of households within the cluster k.

The primary weight of households before modification is the multiplication of the

weights of the first and second stages.

Then we adjust the primary weights for the households to compensate for the non - response of households by calculating adjustment factor for households weights for adjustment levels (Governorate and locality type ) by using households projections by adjustment levels in 2009.

Then the final weight for the households ( FHW) is a multiplication of the adjustment factor by the primary weights for the household