Table 1

Prevalence for the non-reporting of income: published studies in the health and social sciences

Author(s)	Country	Sample size	Data collection method	Non-response prevalence (%)
Wright 197513	Holland	1687	Face to face	17.3
Locander and Burton 197614		US		500	Telephone (men)	18.9–24.6^1-150
Locander and Burton 197614		US		500	Telephone (women)	23.7–35.9
Siemiatycki 197915		Canada		768	Mail	8.8
				791	Face to face	14.1
				1056	Telephone	18.9
Jordanet al198016		US		1210	Face to face	12.0
Jordanet al198016		US		303	Telephone	21.0
Hippler and Hippler 198617		Germany		2057	Face to face	24.2
Hippler and Hippler 198617		Germany		1618	Face to face	18.7
Kormendi 198818		Denmark		1421	Face to face	7.2–25.1^1-150
Kormendi 198818		Denmark		651	Telephone	12.8–33.2
Martin-Matthewset al199119	Canada	224	Face to face	8.5–38.0^1-150
Guadagnoli and Cleary 199220		US		292	Mail	12.7^†
				267		13.9
				283		22.3
de Leeuw 199221		Holland		254	Mail	14.0
				243	Face to face	17.0
				343	Telephone	18.0

↵1-150 Response rate varied by type of income question. ^†Response rate varied by patient sample.