Methodology

Methodology

POLPAN – the longest ongoing social science panel study in Central and Eastern Europe – is focused on describing social structure and its change in Poland. It is conducted in five year waves beginning with 1988.

In 1988, the survey was conducted among a national sample representing Poland’s adult population (aged 21-65), with N = 5,817. In 1993, this sample was randomly reduced and 2,259 respondents took part in the study. Researchers tried to reach them in each of the consecutive five-year waves. To ensure an adequate age balance, additional subsamples involving young cohorts have been supplemented later. So far, 7 waves of the POLPAN study have been conducted.

Information on the particular waves of POLPAN:

2018

Period of Data Collection: April 2018 to June 2018 (part 1, main), July 2018 to December 2018 (part 2, additional)
Data Collector: Centre of Sociological Research at the Institute of Philosophy and Sociology of the Polish Academy of Sciences
Sample: 

  1. respondents aged 26-96 (that is, born in the years 1922-1992) who (a) participated in POLPAN in 2013, or (b) were included into the study in 2008, but did not participated in it in 2013,
  2. new respondents sampled based on a PESEL (Powszechny Elektroniczny System Ewidencji Ludności, Universal Electronic System for Registration of the Population) sampling frame, aged 21-25 (born between 1993 and 1997).
Total Number of Completed Interviews:  2,161 (including 1,875 interviews with panel respondents and 286 with new respondents)
Mode of Data Collection: Oral survey with standardized questionnaire

 

Implementation of the POLPAN 2018 survey according to the particular versions of the questionnaire:

 

 

 

 

 

 

POLPAN 2018: Histories of participation in the survey:

 

2013

Data Collection Period:

April – November, 2013* (the main phase )

February – September, 2013 (supplementary phase): interviews with the respondents who (1) have been interviewed  in 1987/88 only, (2) were residing abroad, (3) were unavailable during the main phase of the survey.

* In exceptional cases interviews were conducted later as well

Data Collection Institution: Centre of Sociological Research at the Institute of Philosophy and Sociology of the Polish Academy of Sciences
Sample:

POLPAN 2013 comprises three panel samples and a renewal sample of young.

  • The first panel sample contains all 2008 POLPAN respondents who agreed to be re-contacted. The realized sample (n = 1244) comprises people aged 26-91 in 2013 (born between 1922 and 1987). RR (Response Rate) = 83%
  • The second panel sample contains respondents of at least one POLPAN wave fielded btw. 1988–2003, and who had dropped out either in 1993, 1998 or in 2003. The realized sample (n = 455) comprises people aged 36-93 years in 2013. RR = 50%.
  • The third panel sample includes 1988 respondents (2,422 people) who were part of the intended sample for POLPAN 1993, but who were not interviewed either in 1993, or in any subsequent POLPAN wave. We reached 584 of these people using at least one survey technique: postal survey or F2F interview (199 respondents took part only in the postal survey, 90 participated only in the F2F interview, and 295 took part in both surveys). RR = 42%.
  • The renewal sample covers young people aged 21 to 25 in 2013, i.e., born between 1988 and 1992. New respondents were selected from the PESEL register (The Universal Electronic System for Registration of the Population), applying a simple random sampling method for selection. The realized sample = 497; RR = 69%.

The total number of  interviews completed is 2,780.
Mode of Data Collection: Mix-mode: (1) face-to-face interviews (PAPI), (2) mail questionnaire (when conducting a face-to-face interview was not possible).

In addition, the CATI method or email questionnaire were used in 17 cases, but ultimately this data was not included in the dataset.

POLPAN 2013: Histories of participation in the survey:

Picture 2 ENG

 

 

 

2008

Period of Data Collection: April 2008 to June 2008 (Part 1), November 2008 to December 2008 (Part 2)
Data Collector: Centre of Sociological Research at the Institute of Philosophy and Sociology of the Polish Academy of Sciences
Sample:

  1. respondents (born between 1922 and 1982) who completed the interview in the study POLPAN 2003,
  2. new respondents sampled based on a PESEL (Powszechny Elektroniczny System Ewidencji Ludności, Universal Electronic System for Registration of the Population) sampling frame, aged 21-25 (born between 1983 and 1987).
Total Number of Completed Interviews:  1,805
Mode of Data Collection: Oral survey with standardized questionnaire

2003

Period of Data Collection: November 2003 to May 2004
Data Collector: Centre of Sociological Research at the Institute of Philosophy and Sociology of the Polish Academy of Sciences
Sample:

  1. respondents (born between 1922 and 1977) who completed the interview in the study POLPAN 1998,
  2. new respondents sampled based on a PESEL (Powszechny Elektroniczny System Ewidencji Ludności, Universal Electronic System for Registration of the Population) sampling frame, aged 21-25 (born between 1978 and 1982).
Total Number of Completed Interviews:  1,699
Mode of Data Collection: Oral survey with standardized questionnaire

1998

Period of Data Collection: September 1998 to October 1998
Data Collector: Centre of Sociological Research at the Institute of Philosophy and Sociology of the Polish Academy of Sciences
Sample:

  1. respondents (born between 1922 and 1966) who completed the interview in the previous wave (POLPAN panel sample 1993),
  2. new respondents sampled based on a PESEL (Powszechny Elektroniczny System Ewidencji Ludności, Universal Electronic System for Registration of the Population) sampling frame, aged 21-30 (born between 1968 and 1977).
Total Number of Completed Interviews:  2,135
Mode of Data Collection: Oral survey with standardized questionnaire

1993

Period of Data Collection: May 1993 to December 1993
Data Collector: Centre of Sociological Research at the Institute of Philosophy and Sociology of the Polish Academy of Sciences
Sample: Randomly sampled persons born between 1922 and 1966 who were interviewed in POLPAN 1988 (POLPAN panel sample) and those who were part of a reserve sample of POLPAN 1988.
Total Number of Completed Interviews:  2,259
Mode of Data Collection: Oral survey with standardized questionnaire

1988

Period of Data Collection: November 1987 to January 1988
Data Collector: Department of Field Research [Zakład Realizacji Badań] at the Institute of Philosophy and Sociology of the Polish Academy of Sciences
Sampling Procedure: Random sample of people aged 21-65 sampled by the Public Opinion Research Center (CBOS), Warsaw from its own sampling frame which was a randomly stratified (according to region and rural-urban) sampled units (815) of voting areas (1986 CBOS sampling frame) in which households were selected. Information about people aged 12 or more living in these households were collected by CBOS interviewers. This was the sampling frame for sampling POLPAN1988 respondents: Issued names: 6,000 (main sample); issued names: 3,167 (reserve sample). Taking into consideration that the size of the place of living and its administrative status are highly correlated with the tendency to making use of respondents from reserve sample, in each of the voivodship in some of its places different size reserve sample was issued. The proportion of the reserve sample to the main sample was depending on the size of the place of living and its administrative status. In places were reaching respondent was difficult, proportion of reserve sample to main sample was higher than in places where it was easier. Respondents who did not agree to complete the interview stay members of substitution sample.
Total Number of Completed Interviews:  5,817
Mode of Data Collection: Oral survey with standardized questionnaire