Assumptions for the modification of the Base Frame for Social Surveys

Assumptions for the modification of the Base Frame for Social Surveys I. Basic information The Frame for Social Surveys (OBS) is an element of the statistical registers system in Polish official statistics which describes the demographic and social situation of the population of persons residing in Poland. It constitutes a basis for constructing statistical frames for social surveys conducted by the Central Statistical Office and supports conducting statistical analyses. Within OBS structure, there are three types of objects placed in relational tables. These objects are persons, dwellings (households) and collective accommodation places. The objects placed in OBS are described by the following characteristics: PERSONS characteristics: identification, address data, demographic and social, referring to occupational activity, DWELLINGS characteristics: identification, address data, demographic and social, concerned with occupational activity of persons living in dwellings (for example, number of persons registered for permanent stay in a dwelling, number of unemployed persons in a dwelling), COLLECTIVE ACCOMODATION PLACES characteristics: identification related to characteristics of collective accommodation places, address data. Within the project, in order to improve the quality, including OBS timeliness, tasks related to a more extensive use of administrative registers for modification and updating of the statistical frame were implemented. After the analysis, the following data sources were selected: PESEL register - identification data of persons, including their address data, the Central Register of Entities the National Register of Taxpayers (CRP-KEP) - identification data of persons, including address data Ref. Ares(2016)5791752-06/10/2016 1

The Central Register of the Insured (CRU) of the Social Insurance Institution (ZUS) data on the economic activity of persons; The Central Register of the Insured (CWU) of the National Health Fund (NFZ) identification data of persons, including address data, the New Social Insurance IT System (nsiu) of The Agricultural Social Insurance Fund (KRUS) data on the activity of persons in agriculture TERYT - data from the National Register of the Land Territory Division (including identifiers and codes of units of territorial division as well address and dwellings identifiers and codes) OBR - data from the Statistical Frame for Agricultural Surveys concerning activity of persons in agriculture Information system concerning vital records from the Civil Registry Offices data on births and deaths. Besides data from administrative sources, in order to update and verify the population in OBS, records on births and deaths will also be used (including records from administrative data sources from Civil Registry Offices). OBS updating and verification in terms of uninhabited dwellings will be performed with the use of results of statistical surveys. II. Updating of the Frame for Social Surveys OBS updating will be conducted on the basis of data obtained from administrative sources according to updating rules agreed with the CSO statisticians dealing with demographic and social statistics. The above-mentioned administrative data sources will serve as basic data sources obtained for the subjective and objective updating of the frame. For OBS updating, it is also planned to obtain information from non-administrative data sources, among others, data on addresses from electricity suppliers to natural persons within the territory of Poland. 2

Statistical surveys, especially in terms of verification and supplementation of data gathered in OBS, will constitute an important data source, for instance, as far as basic information in terms of sampling is concerned, i.e. whether a dwelling is inhabited. The subjective updating of persons will be carried out on the basis of records of births and deaths from the Civil Registry Offices and records of emigration and immigration for permanent stay from the PESEL register. The process of the objective updating will concern the following data gathered in OBS: names and surname, date and place of birth, sex, PESEL number, citizenship, marital status, type of place of work or education, insurance entitlement (excluding the confidential part of the code), permanent and temporary registered address, address of residence. Changes in the TERYT register will constitute the basis for updating of address objects, i.e. tables of dwellings. The scope of information on the dwelling stock will be updated in OBS on the basis of the TERYT register with subsequent quarterly records. In order to maintain the most recent data, updating of the address resources of the TERYT register is established prior to the commencement of a given survey. Considering the basic task of OBS, which consists of developing a sampling frame for statistical surveys, it is also necessary to establish a reference address of residence for each person. This task will be performed in relation to the analysis of compliance of permanent and temporary registered addresses and addresses of residence obtained from administrative sources, i.e. PESEL, KEP, ZUS, KRUS, NFZ and non-administrative data sources, i.e. obtained from electricity suppliers, with revised dwelling addresses from NOBC database working within the TERYT register. The manner of determining a person's reference address will consider the availability of data in specific records, with the following sequence of their use as follows: 1. temporary registered address from the PESEL register (including the declared period of stay), 2. address of residence from CRP-KEP, 3

3. address of residence from ZUS, 4. address of residence from KRUS, 5. address of residence from NFZ, 6. address of residence obtained from electricity suppliers, 7. registered address of permanent stay from the PESEL register. Furthermore, all data in OBS will be supplemented with postal codes from postal code database in order to determine exact addresses which would enable sending questionnaires to sampled persons and dwellings. In the process of OBS updating, it is planned to determine the characteristics of dwellings including persons residing there, for instance, retirees, pensioners, students, persons employed in an agricultural farm as well as the number of persons registered for permanent stay and the number of persons registered for temporary stay. These constitute the information that will be used in sampling, and, to be more specific in stratification. 1. Allocation of symbols of administrative data sources in OBS For each piece of data coming from administrative sources in the statistical Frame for Social Surveys, source was indicated by a symbol in the following manner: The symbol in OBS PESEL ZUS NFZ KEP TERYT OBR KRUS Description of the source Data from the PESEL register Data from the Central Register of the Insured Data from the Central Register of the Insured Data from the Central Register of Entities the National Register of Taxpayers Data from the NOBC records Data from the Statistical Frame for Agricultural Surveys obtained from administrative sources Data from the Agricultural Social Insurance Fund 4

2. Updating of OBS resources based on administrative data with a specification of their source Updating of data concerning persons form PESEL, KEP, NFZ: Name of variable in OBS Variable description Source PESEL PESEL number PESEL IM1 First name PESEL; KEP; NFZ; KRUS IM2 Second name PESEL; KEP; NFZ; KRUS NAZ1 Surname - first part PESEL; KEP; NFZ; KRUS NAZ2 Surname - second part PESEL; KEP; NFZ; KRUS DATAUR_DZ Date of birth - day PESEL DATAUR_M Date of birth - month PESEL DATAUR_R Date of birth - year PESEL PLEC Sex PESEL MIEJSCE_UR Place of birth PESEL, KEP STAN_C_P Marital status PESEL KRAJ_OBYWATEL_I_SYMB Country of citizenship PESEL KRAJ_UR_SYMB Country/place of birth PESEL Assumptions for the updating of resources from the above table with a specification of their source: 1. PESEL - the basic source of data in OBS. 2. Data updating based on the CRP-KEP register concerns the following fields in OBS: a. First part of the surname - if for a given PESEL number there was no surname in the PESEL register, b. First name - if for a given PESEL number there was no name in the PESEL register, c. Place of birth - if for a given PESEL number there was no place of birth in the PESEL register, d. address of residence. 3. Updating based on the CWU NFZ register concerns the following fields in OBS: 5

a. First element of surname - if for a given PESEL number there was no surname in the PESEL register and the CRP-KEP register, b. First name - if for a given PESEL number there was no name in the PESEL register and the CRP-KEP register, c. Place of birth - if for a given PESEL number there was no place of birth in the PESEL register and the CRP-KEP register, d. address of residence. 3. Updating of secondarily derived OBS data based on sources from administrative data with a specification of their source Name of the variable in OBS Variable description Source WIEK Age in completed years as at PESEL 31 December each year PRACUJACY Employed person according to ZUS, KRUS, OBR the registers PRACUJACY_GOSPROL Person insured due to KRUS, OBR employment at a family/own agricultural farm according to the registers PRACUJACY_ROL Person insured in ZUS due to ZUS, OBR employment in agriculture PRACUJACY_WIELE_PRAC Person insured due to ZUS, KRUS, OBR employment by more than one contribution payer according to the registers BEZROBOTNY Unemployed person insured in ZUS ZUS PRACUJACY_ZUS Employed person according to ZUS ZUS EMERYT_RENCISTA Retiree/ pensioner ZUS STUDENT University student ZUS, POL-on UZYTKOWNIK_GRUNTOW User of land which does not meet the definition of an agricultural farm OBR, KRUS 6

Detailed assumptions for secondarily derived variables in the above table have been presented below. Nazwa pola PRACUJACY (Ubezpieczony z tytułu pracy wg rejestrów) PRACUJACY_GOS PROL (pracujący w swoim gospodarstwie rolnym) PRACUJACY_ROL (ubezpieczony w ZUS z tytułu pracy w rolnictwie) PRACUJACY_WIE LE_PRAC (ubezpieczony z tytułu pracy przez więcej niż jednego płatnika) Tabela OSOBY Algorytm Jeśli PRACUJACY_ZUS=1 to PRACUJACY =1; (źródło ZUS) Jeśli PRACUJACY_ GOSPROL=1 lub 2) to PRACUJACY =1; (źródło przeniesione z PRACUJACY_ GOSPROL); Jeśli PRACUJACY_ROL=1 to PRACUJACY =1; (źródło ZUS) W pozostałych przypadkach PRACUJACY=0 (źródło AUT) Jeśli w danych z KRUS (ubezpieczony lub członek rodziny) istnieje taki sam PESEL i zachodzi (KRUS.spis_ludności.Płatnik=T i KRUS.spis_rolny.Status=A) to PRACUJACY_GOSPROL=1; (źródło KRUS); Jeśli w KRUS osoba nie występuje to aktualizacja na podstawie OBR. Jeśli osoba znajdzie się w OBR to PRACUJACY_GOSPROL=1; (źródło OBR); Jeśli osoba nie występuje w KRUS i OdBR to PRACUJACY_GOSPROL=0 (źródło AUT) Jeśli kod ubezpieczenia =(0310 lub 0320) to PRACUJACY_ROL = 1 (źródło ZUS); Jeśli kod ubezpieczenia (0310 lub 0320) lub osoba nie występuje w zbiorze z ZUS to PRACUJACY_ROL = 0 (źródło AUT); Jeśli występuje co najmniej 2 razy kod ubezpieczenia ze zbioru (0110,0111,0120,0125,0126,0200,0310,0320,0411,0417,0421,0424,0426,0428,0510, 0511,0512,0520,0530,0540,0543,0544,0545,0570,0572,0610,0800,1010,1012,1110,1 111,1112,1113,1114,1120,1130,1131,1132,1133,1134,1135,1140,1240,2010,2020,22 40,2241,2242) - to aktualizacja: Pracujacy_wiele_prac = 1; (źródło ZUS) Jeśli występuje tylko jeden kod ze zbioru (0110,0111,0120,0125,0126,0200,0310,0320,0411,0417,0421,0424,0426,0428,0510, 0511,0512,0520,0530,0540,0543,0544,0545,0570,0572,0610,0800,1010,1012,1110,1 111,1112,1113,1114,1120,1130,1131,1132,1133,1134,1135,1140,1240,2010,2020,22 40,2241,2242) i PRACUJACY_GOSPROL= 1 to Pracujacy_wiele_prac=1; (źródło przeniesione z PRACUJACY_GOSPROL) Jeśli występuje tylko jeden kod ze zbioru (0110,0111,0120,0125,0126,0200,0310,0320,0411,0417,0421,0424,0426,0428,0510, 0511,0512,0520,0530,0540,0543,0544,0545,0570,0572,0610,0800,1010,1012,1110,1 111,1112,1113,1114,1120,1130,1131,1132,1133,1134,1135,1140,1240,2010,2020,22 40,2241,2242) i PRACUJACY_GOSPROL 1 to Pracujacy_wiele_prac=2 (źródło ZUS) Jeśli PRACUJACY_GOSPROL=1 i brak kodu ze zbioru (0110,0111,0120,0125,0126,0200,0310,0320,0411,0417,0421,0424,0426,0428,0510, 0511,0512,0520,0530,0540,0543,0544,0545,0570,0572,0610,0800,1010,1012,1110,1 111,1112,1113,1114,1120,1130,1131,1132,1133,1134,1135,1140,1240,2010,2020,22 40,2241,2242) to Pracujacy_wiele_prac =2; (źródło przeniesione z PRACUJACY_GOSPROL) 7

Nazwa pola Algorytm W pozostałych przypadkach PRACUJACY_WIELE_PRAC=0 (źródło AUT) BEZROBOTNY (Bezrobotny ubezpieczony w ZUS przez PUP) Jeśli kod ubezpieczenia =(0911 lub 0911) to BEZROBOTNY=1; (źródło ZUS) Jeśli kod ubezpieczenia (0911 lub 0911) to BEZROBOTNY=0 (źródło ZUS) PRACUJACY_ZUS (ubezpieczony w ZUS z tytułu pracy) EMERYT_RENCIST A (emeryt/rencista) STUDENT (student) UZYTKOWNIK_GR UNTOW LICZ_OSOB_ADRE S_REF LICZ_OSOB_STAL YCH LICZ_OSOB_CZAS OWYCH WYST_OSOB_UBE ZP_ZUS WYST_OSOB_UBE ZP_KRUS WYST_PRACUJAC Y WYST_EMERYT_R ENCISTA Jeśli w zbiorze ZUS występuje co najmniej jeden z poniższych kodów ubezpieczenia ze zbioru (0110,0111,0120,0125,0126,0200,0310,0320,0411,0417,0421,0424,0426,0428,0510, 0511,0512,0520,0530,0540,0543,0544,0545,0570,0572,0610,0800,1010,1012,1110,1 111,1112,1113,1114,1120,1130,1131,1132,1133,1134,1135,1140,1240,2010,2020,22 40,2241,2242) to Pracujacy_ZUS = 1 (1=pracuje); w przeciwnym razie Pracujacy_ZUS = 0 (2=nie pracuje) (źródło ZUS) Jeśli kod ubezpieczenia =(2500,2501,2510,2511,2700,2701)to EMERYT_RENCISTA = 1 (źródło ZUS) W pozostałych przypadkach EMERYT_RENCISTA =0 (źródło AUT) Jeśli kod ubezpieczenia =1811 to STUDENT = 1 (źródło ZUS) W pozostałych przypadkach STUDENT =0 (źródło AUT) Algorytm w odrębnym załączniku Tabela MIESZKANIA Zlicz PESEL jeśli: id_mieszkania=id_mieszkania_st_pesel Zlicz PESEL jeśli: id_mieszkania=id_mieszkania_czas_pesel w którym występuje przynajmniej 1 rekord w polu PRACUJACY_ZUS=1 to WYST_OSOB_UBEZP_ZUS=1. w którym występuje przynajmniej 1 rekord w polu PRACUJACY_GOSPROL=1 lub 2 to WYST_OSOB_UBEZP_KRUS=1. w którym występuje przynajmniej 1 rekord w polu PRACUJACY =1 to WYST_PRACUJACY=1. w którym istnieje przynajmniej 1 rekord w polu EMERYT_RENCISTA=1 to WYST_EMERYT_RENCISTA=1. 8

Nazwa pola WYST_UZYT_GOS P_ROLN WYST_UZYT_GRU NTOW WYST_BEZROBOT NY Algorytm w którym występuje przynajmniej 1 rekord w polu UZYTKOWNIK_GRUNTOW=1 lub 2 to WYST_UZYT_GOSP_ROLN=1 w którym występuje przynajmniej 1 rekord w polu UZYTKOWNIK_GRUNTOW=3 lub 4 to WYST_UZYT_GRUNTOW=1 w którym występuje przynajmniej 1 rekord w polu BEZROBOTNY=1 to WYST_BEZROBOTNY=1. The process of OBS updating should include the current codes of insurance entitlement according to the classification of insurance entitlements used by the Social Insurance Institution. On the basis of the data, it will be possible to determine variables presented in the above table concerning persons economic activity and their situation on the labour market (in the table dwellings in OBS). 4. OBS updating based on current surveys in terms of births and deaths, and emigration and immigration for permanent stay The OBS will be updated on the basis of current data sources in terms of births and deaths and emigration and immigration for permanent stay, which will enable determining the population living in the country which will be subject to statistical observations. The frame will also include persons born in 2015 and immigrants who came to Poland for permanent stay, and exclude persons who died in 2015 and who emigrated for permanent stay in 2015. 5. OBS updating based on the National Official Register of the Territorial Division of the Country (TERYT) The updating based on the TERYT register will include all address data in the OBS, in the dwellings table, i.e. data on, among others, statistical regions, census enumeration areas and address and dwellings registers (including TERYT identifiers). 9

OBS data concerning dwellings which are subject to quarterly updating from TERYT is: Name of variable in OBS ID_MIESZ ID_NOBC Variable description Technical identifier of a dwelling NOBC address and building identifier (field idt_nobc in NOBC) ID_BUD_NOBC NOBC technical identifier of a building (field idt_bud in NOBC) WOJ_TERC Symbol of voivodship in the TERYT register POW_TERC Symbol of powiat in the TERYT register GMI_TERC_RODZAJ_TERC Symbol of gmina in the TERYT register REJON Statistical region identifier OBWOD Identifier of a census enumeration area with a region NAZWA_MIEJ Locality SYM_MIEJ Locality identifier in SIMC CECHA Street characteristic ULICA_B Street name KOD_U Street identifier in ULIC NR_BUD Number of a building NR_BUD_NIER Number of a building in within a real estate NR_M Dwelling (premises) number MIESZ_KONSTR A multiple dwelling: 1- yes, 2 -no SYM_RM Symbol of locality type NAZWA_RM Name of locality type SYM_MIEJ_PODS Basic locality identifier NAZWA_MIEJ_PODS Name of a basic locality SYM_RM_PODS Symbol of basic locality type NAZWA_RM_PODS Name of basic locality type (village, settlement) TYP_M Dwelling type ID_CZESCI Dwelling identifier in the case of multiple dwellings N_ZAM Reason for a dwelling being uninhabited 10

OBS data concerning collective accommodation places which are subject to quarterly updating from TERYT includes: Name of variable in OBS Variable description NOZZ_ID ID_NOBC ID_BUD_NOBC NAZWA_OZZ OBIEKTZZ_KOD WOJ_TERC POW_TERC Technical identifier of a collective accommodation place NOBC address and building identifier (field idt_nobc in NOBC) NOBC technical identifier (field idt_bub in NOBC) Name of a collective accommodation place Symbol of a collective accommodation place Voivodship symbol in the TERYT register Powiat symbol in the TERYT register GMI_TERC_RODZAJ_TERC Gmina symbol in the TERYT register REJON OBWOD NAZWA_MIEJ SYM_MIEJ CECHA ULICA_B KOD_U NR_BUD NR_BUD_NIER SYM_RM NAZWA_RM SYM_MIEJ_PODS NAZWA_MIEJ_PODS SYM_RM_PODS NAZWA_RRM_PODS Statistical region identifier Identifier of a census enumeration area within a territory Locality Name of locality in SIMC Street characteristic Street name Street identifier in ULIC Number of a building Number of a building on a real estate Symbol of locality type Name of locality type Identifier of locality type Name of a basic locality Symbol of a basic locality type Name of a basic locality type (in genitive, i.e. village, settlement) OBS data concerning dwellings and collective accommodation places which are subject to quarterly updating from spatial databases: WSPOL_X WSPOL_Y Name of variable in OBS Variable description The geographical coordinate x The geographical coordinate y 11