Table 2

Description of the study sample stratified by nationality (participants of the rehabilitation patient survey of the German Statutory Pension Insurance Scheme conducted between 2007 and 2011, n=274 513)

	Nationality										Total (n=274 517)
	German (n=262 363)		Turkish (n=2301)		Former Yugoslavian (n=2429)		Portugal/Spain/Italy/Greece (n=2180)		Other (n=5244)		Total (n=274 517)
Age in years (mean; SD)
	53.4	10.1	47.9	9.4	53.3	8.9	52.2	8.8	52.1	9.0	53.3	10.1
Sex (n, %)
Male	1 29 023	49.2	1450	63.0	1299	53.5	1407	64.5	2860	54.6	136 039	49.6
Female	1 33 340	50.8	851	37.0	1130	46.5	773	35.5	2380	45.4	138 474	50.4
Marriage status (n, %)
Single/divorced/widowed	72 288	28.2	288	12.5	488	20.2	436	20.1	1222	23.6	74 722	27.8
Married	1 84 423	71.8	2008	87.5	1932	79.8	1737	79.9	3953	76.4	194 053	72.2
Education (n, %)
Low (Reference)	1 12 714	43.0	1590	69.1	1284	52.9	1522	69.8	1716	32.7	118 826	43.3
Intermediate	83 757	31.9	291	12.6	544	22.4	273	12.5	1279	24.4	86 144	31.4
High	39 002	14.9	111	4.8	257	10.6	144	6.6	1238	23.6	40 752	14.8
Other/unknown	26 878	10.2	309	13.4	344	14.2	241	11.1	1007	19.2	28 779	10.5
Occupational position (n, %)
Skilled labour	1 76 520	68.8	917	39.9	1126	46.5	1016	46.8	2910	56.3	182 489	67.9
Semiskilled/unskilled labour	33 950	13.2	1157	50.4	1051	43.4	960	44.2	1668	32.3	38 786	14.4
Trainee/not employed	46 051	18.0	222	9.7	243	10.0	196	9.0	594	11.5	47 306	17.6
Time absent from work in the last 12 months (n, %)
None	39 414	15.3	304	13.3	271	11.2	250	11.6	774	15.0	41 013	15.2
<3 months	1 19 975	46.6	940	41.2	1087	45.0	1052	48.6	2402	46.5	125 456	46.6
3–6 months	27 013	10.5	366	16.1	387	16.0	305	14.1	671	13.0	28 742	10.7
6+ months	30 947	12.0	474	20.8	445	18.4	362	16.7	819	15.9	33 047	12.3
Not employed	39 909	15.5	195	8.6	225	9.3	194	9.0	495	9.6	41 018	15.2
Diagnosis at rehabilitation entry (n, %)
Skeletal system	1 10 906	42.3	1243	54.0	1325	54.5	1100	50.5	2447	46.7	117 021	42.6
Neoplasms	50 821	19.4	168	7.3	333	13.7	300	13.8	711	13.6	52 333	19.1
Circulatory system	35 177	13.4	309	13.4	276	11.4	284	13.0	726	13.8	36 772	13.4
Respiratory system	9029	3.4	69	3.0	46	1.9	70	3.2	183	3.5	9397	3.4
Other	56 430	21.5	512	22.3	449	18.5	426	19.5	1177	22.4	58 994	21.5
Type of rehabilitation (n, %)
Hospital follow-up	97 036	37.0	786	34.2	760	31.3	733	33.6	1906	36.3	101 221	36.9
Not hospital follow-up	1 65 327	63.0	1515	65.8	1669	68.7	1447	66.4	3338	63.7	173 296	63.1
Assistance received in completing questionnaire (n, %)
No	2 48 571	95.5	998	44.0	1503	62.8	1180	54.7	3901	75.0	256 153	94.1
Yes	11 720	4.5	1272	56.0	890	37.2	979	45.3	1301	25.0	16 162	5.9