The validity of the EQ-5D-3L items: an investigation with type 2 diabetes patients from six European countries

Table 1 General information about the sample

	Questionnaires distributed	Questionnaires returned	Sufficient language competence	Sufficient data^a	Participants included
England	3343	475	313	436	289
Finland	436	183	183	177	177
Germany	462	286	282	259	255
Greece	600	179	179	165	165
The Netherlands	779	400	387	364	354
Spain	625	115	115	101	101
All countries	6245	1638	1459	1502	1341

^aParticipants who answered at least two of the three socio-demographic questions, at least four of the five questions concerning secondary complications, and at least four of the five EQ-5D-3L questions.

ISSN: 1477-7525