Egypt 1995 Appendix B
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APPENDIX B SAMPLE DESIGN APPENDIX B SAMPLE DESIGN The major objective of the Egypt Demographic and Health Survey was to provide estimates with acceptable precision for important population characteristics such as fertility, infant and child mortality, and contraceptive prevalence and for key maternal and child health and nutrition indicators. In addition, women's status measures were desired for a subsample of the women interviewed in the EDHS-95, and two govemorates in Upper Egypt were to be oversampled for a panel study of the reasons for nonuse of family planning in Egypt. B.1 Sample Design The sample selection for the EDHS-95 was designed to obtain estimates of the required population, health and women's status indicators for the country as a whole and for six major administrative regions (the Urban Govemorates, urban Lower Egypt, rural Lower Egypt, urban Upper Egypt, rural Upper Egypt, and the Frontier Govemorates~). Further, the sample selection for the EDHS- 95 allows for estimates of most key variables, with the exception of fertility and mortality rates and women's status indicators, at the governorate level in the Urban Govemorates, Lower Egypt, and Upper Egypt. In the latter region, the design also called for Assuit and Souhag govemorates to be oversampled in order to provide sufficient cases for the panel study of the reasons for nonuse of family planning in those areas. As a result of the oversampling, it is possible to obtain reasonably precise estimates of fertility rates for these two govemorates in addition to the other variables. However, the size of the samples in these two governorates is not large enough to provide child mortality estimates. Finally, in the Frontier Govemorates, the sample size for individual govemorates is not sufficiently large to allow for separate governorate-level estimates. However, separate estimates are possible for the western Frontier Govemorates (Matrouh and New Valley) and the eastern Frontier Govemorates (North Sinai, South Sinai and Red Sea). In order to meet the objectives of the EDHS-95 sample, the target sample was set at 14,000 interviews with ever-married women age 15-49. It was estimated that 16,000 households had to be selected for the EDHS-95 sample in order to yield the desired number of interviews. Table B.1 presents the distribution of the target sample and the overall sampling fractions by govemorate. B.2 Sample Frame For each governorate, a list of shiakhas and towns served as the initial sample frame for urban areas, and a list of villages constituted the frame for the rural areas. The lists, which were based on the administrative units from the 1986 census, were compiled from the frames that were used for the EDHS- 92 survey. The lists were updated to take into account newly defined shiakhas or villages (created either by division, grouping or reclassification of units). B.3 Sample Selection A total of 467 primary sampling units (PSUs) were selected with probability proportional to the size of the unit. As Table B.1 shows, 204 of these units were in urban areas and 263 in rural areas. i The Frontier Governorates were not included in the 1988 and 1992 DHS surveys. 225 Before implementing this selection, the list of shiakhas or villages were arranged in serpentine order from the northwest comer of the governorate to the southeast comer. Shiakhas or villages with less than 2,500 population were generally grouped with contiguous shiakhas or villages until the minimum size was obtained. A list of the selected PSUs allocated according to govemorate and sector (urban/rural) is shown in Table B.2. Figures B.I.I-B.1.4 show the geographical distribution of the sample. Following the selection of the shiakhas and villages, detailed maps were obtained for the selected units. The map for each unit was divided into a number of parts (with equal size). In the case of most PSUs, one part was then selected systematically with equal probability. A quick count was carried out to divide the part into standard segments of about 100 households. Two segments were then selected systematically with equal probability. For shiakhas or villages in which there were 4,000 or more households (approximately 20,000 population), the selection procedures were modified slightly. Two parts were selected from these large units. A quick count was carried out to divide each part into segments of around 100 households, and one segment was selected from each part. A household listing operation was implemented in each of 934 segments selected for the EDHS-95 sample. Based on the household listing, the household selection was implemented in such manner as to obtain a self-weighting sample within each governorate. However, the number of households selected from each governorate is disproportional to the govemorate's share of the national population. As a result, the EDHS-95 sample is not self-weighting at the national level. Finally, a systematic subsample of one-third of the household sample was selected for the women's status survey in 24 of the 26 govemorates. In Assuit and Souhag governorates (which were targeted for a special panel study), all of the selected households were included in the women's status subsample. B.4 Results of the Sample Implementation Results of the sample implementation for the EDHS-95 survey are shown in Table B.3. The household and women's response rates exceeded 98 percent in all areas. 226 Table B.1 Sample parameters Distribution of the target number of household and individual interviews and of primary sampling units and the overall sampling fractions by govemorate and sector (urban/rural) Primary Target sample sampling units Overall sampling Govemorate Households Women Urban Rural fraction Urban Governorates Cairo 1434 1100 37 111244 Alexandna 652 500 17 1/1415 PoX Said 587 450 15 1/176 Suez 587 450 15 1/133 Lower Egypt Damietta 498 450 4 11 1/310 Dakahlia 664 600 5 15 1/ 1336 Sharkia 664 600 5 15 1/1157 Kalyubia 608 550 8 10 1/1209 Kafr El-Sheikh 498 450 4 11 1/693 Gharbia 608 550 6 12 1/968 Menoufia 553 500 3 14 1/785 Behera 608 550 4 14 1/1000 Ismailia 498 450 7 8 1/259 Upper Egypt Giza 58 550 10 8 1/1529 Beni Suef 48 450 4 11 1/644 Faynum 48 450 3 12 1/541 Menya 48 450 3 12 1/1304 Assiut 160 1500 14 36 1/243 Souhag 160 1500 11 39 1/266 Qena 48 450 4 I 1 11883 Aswan 48 450 6 9 11322 Frontier Governorates Matrouh 330 298 5 5 1/58 New Valley 223 202 3 4 1164 North Sinai 309 279 5 4 1/66 South Sinai 55 50 1 1 1/165 Red Sea 189 171 5 1 1/118 Total 15,774 14,000 204 263 227 Table B.2 Primary sampling units by govemorate, EDHS 1995 URBAN GOVERNORATES Cairo Kafr EI-Shorafaa EI-Nozha EI-Zahraa and Masaken EI-Helmia Helmia EI-Naam EI-Ezab EI-Mataria EI-Gharbia Arab Abo Tawila EI-Khazandara Sherif EI-Ezab El-Zawia EI-Hamra EI-Balad Masakan EI-Zawia EI-Hamraa E1-Amiria Hadayek EI-Kobba Masaken EI-Amiria EI-Ganoubia E1-Zaiton El-Gharbia Masaken EI-Amiria EI-Shamalia EI-Tawfik Ei-Manteka EI-Thamena Masaken EI-Mohandesin E1-Teraa EI-Boulakia Roud EI-Farag El-Baled Mohamed Mazhar Koloud Bek Khan EI-Khalily El-Sheikh Abdalla EI-Meadsa EI-Tonsy EI-Sebalen Athar EI-Naby Ain EI-Sira EI-Basatin EI-Gharbia Dar EI-Salam Tufa E1-Heet(EI-Balad) EI-Maasra EI-Balad Helwan EI-Balad Sheiakha Thama 15 May Alexandria Abou kir E1-Gharbia EI-Kerdahy EI-Manshia EI-Baharia Sidi Beshr Kebly EI-Aksa and Bakous Dana EI-Gadida and Ezbat EI.WasUmia Dana EI-Gadida and Ezbat El-Wastania Abou EI-Nawatir El-Ibrahimia Kebly and EI-Hadra Bahary Ezbet EI-Gamea EI-Bab EI-Gadid Shark Embrouzo and Moharam Bek EI-Atarin Gharb EI-Dekhila EI-Werdian Shark Tabia Saleh Gheet E1-Enab Gharb P~tS~d EI-Galaa EI-Galaa EI-Saraya EI-Manaakh EI-Manaakh EI-Manaakh Adli EI-Abassy El-Arab Ibrahim Hassanin Mostafa Hamza Port Fouad and EI-Dalm EI-Gomrokia E1-Kabouty EI-Kabouty EI-Kab and Bahr EI-Bakar Suez Fisal Fisal Fisal EI-Ganaen EI-Marekab - Oyon Mousa Kesm Thaleth Kesm Thaleth Kesm Thaleth Kesm Thaleth Kesm Thaleth Kesm Rabia Kesm Rabia Atteka Kesm Awal and EI-Dalra EI-Gomrokia Kesm Thani 228 LOWER EGYPT Damietta Urban Ezbet El-Borg Kesm Thaleth Kafr Saad EI-Rouda Rural Kafr Soliman EI-Bahari Meet Abou Ghalcb E1-Rekabia Shat Gheet EI-Nasara Shat EI-Shoaraa Awlad Hamam Shat EI-Khaiata Shat Ezbet EI-Lahm Kafr El-Arab Abou Gerida EI-Zeetra Dakahlla Urban EI-Mataria Dekemes Sandoub Talkha M~t Ghamr and Dakdous Rural EI-Domain(EI-Ghazaer) Kafr EI-Hag Shcrbiny EI-Hwta Manshat ~-Gamal Negir and Meet Shadad Meet EI.Sarem EI-Badala Kafr Demima EI-Kadeim Kafr EI-Tawela Shensha and EI-Gharaka EI-Mokataa and EI.Hswa Tanboul EI-Kobra and Kafr Tanboul EI-Kadeim Kom EI-Nour and Kafr EI-Dalil Sentemay Damas Sharkla Urban Fakous AbouKebir EI-Nahal El-Siadein Belbees Rural Smakein EI-Gharb San EI-Hagar EI-Bahria Manshat Nabhan Ncgom Safour Kofor Negm Awlad Mousa EI-Asadia El-Shanbat and Kafr Abo Gabal Behna Bay Mlames Sanhout EI-Berk Enshas EI-Raml EI-Sanaf¢in, Kafr EI-Sharwa and Bani Hussein Kafr Abrash and Kafr EI-Sharbia Kalyubia Urban EI-Manshia Shebin EI-Kanater Kaliob Shoubra EI-Khima Bigam Damanhour Shoubra Bahtim Bahtim 229 Rural Kafr Ezzab Ghomm Shablnga Kafr Mansour EI-Deir Kafr EI-Deir Nawa Abo Zaabel Meet Halfa Tanan Basous Kafr El-Sheikh Urban BalUm Fouah Riad Kafr El-Sheikh Ali Mostafa EI-Zawawi Rural EI-HadadL Ezabha and Abo Ahmed Manshat Abass and EI-Khwaled Abo Mostafa Ketah El-Hamoul and EI-Zawia EI-Shotout Defda Maseir Abioka Ezzab Abo Mandour Sendlon Nashrt Gharbia Urban Kotour Naser HablbYoussef EI-Sengawy El-Santa Wabour EI-Nour Ali Agha Ru~ EI-Hadad EI-Ema and Kafr Mahlet Maseir EI-Segaeia EI-Kratia Kafr EI-Bastawisy