The population-based oncological health care study OVIS – recruitment of the patients and analysis of the non-participants

Table 1 Case numbers of the cohorts in the study

	Melanoma		Breast cancer		Prostate cancer
	N	%	N	%	N	%
Basic population (cohort A)	1,503	100	5,248	100	4,738	100
non eligible patients (cohort B)	741	49.3	2,882	54.9	2,512	53.0
eligible patients (cohort C)	762	50.7	2,366	45.1	2,226	47.0
Participants (cohort F)	608	40.5 * [79.8]	1,927	36.7 * [81.4]	1,750	36.9 * [78.6]
Non-respondents (cohort E)	154	10.2 [20.2]	439	8.4 [18.6]	476	10.0 [21.4]
Non-participants (cohort D)	895	59.5	3,321	63.3	2,988	63.1

* The value without parenthesis describes the study size (Percentage of the participants to the basic population). The value with parenthesis describes the recruiting efficiency proportion (Percentage of the participants to the eligible patients)

ISSN: 1471-2407