2011 | nr 1 (ang) Medical, Psychological, Sociological and Economic Aspects of Ageing in Poland. PolSenior | 7--12
Basic Indices Concerning the Implementation of Survey
The level of sample execution was different in relation to the size of the town and urban vs. rural location (from 78% in cities >500 tys. to 102-104% in villages and small towns), and province (from 80-84% in Mazowiecki and Dolnośląski to 115%-137% in Podlaski, Lubelski and świętokrzyski province). Warsaw (66%) was the most difficult place in the whole country to recruit respondents. Differences in the level of sample execution in relation to gender (males 97%; females 93%) and age of the examined subjects (from 84%-90% in youngest and oldest to 109% in the cohort of 70 to74 years of age) were much smaller. Thirty seven percent of all randomly chosen subjects (n= 15574) were finally recruited to the PolSenior Project. The response rate counted as percentage of those subjects who were examined to the number of all who were randomly selected with correct addresses was equal to 43% (in females 42%, in males 43%). It differed significantly between provinces (from 32% to 61%) and in relation to size of town and urban vs. rural location (from 27% to 59%), with similar trends as observed at the level of sample execution analysis. The response rate estimated as percentage of all subjects who were actually eligible for nurses at their homes was equal to 49%. Those who refused to participate did so because they were not interested in the subject of the study or they were not able to see any benefits. The other reasons for refusal were: mistrust and fear, lack of time, and the fact that respondents claimed that they knew the current status of their health. In a special substudy we followed up and examined subjects who refused and compared them to those who took part in the survey (altogether 330 subjects). The characteristics of the subjects who refused did not differ in terms of socio- demographic features, but they presented slightly worse self assessment of their health, economic position and some parameters assessing everyday functioning. (original abstract)
- V. Lorant, S. Demarest, P.-J. Miermans and H. Van Oyen (2007), Survey error in measuring socio-economic risk factors of health status: a comparison of a survey and a census, International Journal Of Epidemiology, vol. 36, s. 1292-1299.