Table 1

Patient characteristics.^a

	Total study group		Western patients		Non-Western patients

	n = 986	%	n = 614	%	n = 369	%
Age in years^b
0–12	9	0.9	2	0.3	7	1.9
18–29	185	18.9	77	12.6	107	29.2
30–49	383	39.2	205	33.7	177	48.4
50–65	231	23.6	164	26.9	66	18.0
>65	170	17.4	161	26.4	9	2.5
Monthly net income (€)
<499	52	7.0	30	6.6	22	7.6
499–861	235	31.6	137	30.2	97	33.7
862–1224	249	33.5	141	31.1	108	37.5
1225–1587	122	16.4	84	18.5	38	13.2
1588–1951	57	7.7	41	9.0	16	5.6
>1951	28	3.8	21	4.6	7	2.4
Education
Primary school not completed	46	4.7	19	3.2	27	8.0
Primary school completed	285	28.9	175	29.3	110	32.5
Lower professional^c and secondary education	209	22.3	144	24.1	65	19.2
Medium professional^c and secondary education	134	14.3	85	14.2	49	14.5
Higher secondary education	52	5.5	25	4.2	26	7.7
Higher professional education and university	111	11.8	81	13.5	29	8.6
Other	102	10.9	69	11.5	32	9.5
Self-perceived proficiency in Dutch
Poor or speaks no Dutch	88	9.5	12	2.2	7.6	20.8
Average	148	16.0	29	5.2	119	32.5
Good	687	74.4	514	92.6	171	46.7
Sex
Male	365	37.2	223	36.5	142	38.8
Female	615	62.8	388	63.5	224	61.2

↵a Missing data (not registered or refusal of information by patients): ethnicity (Western versus non-Western) n = 3, age n = 8, income n = 243, education n = 47 language proficiency n = 63, sex n = 6.
↵b The age band 13–17 years was not studied.
↵c Lower/higher professional education (technical education and vocational education) and lower/higher secondary education.