Table 1. Response rates at follow-up according to characteristics assessed at baseline.

Characteristic	Completed baseline questionnaire		Completed follow-up questionnaire		Response rate (%)
	Nurses	Office workers	Nurses	Office workers	Nurses	Office workers
Sex
Male	45	64	41	56	91.1	87.5
Female	201	118	177	109	88.1	92.4
Age (years)
20–39	80	90	67	80	83.8	88.9
30–39	115	63	105	60	91.3	95.2
40–59	51	29	46	25	90.2	86.2
Occupational activities
Work with hands above shoulderheight >1 hour	106	73	95	66	89.6	90.4
Lifting weights of ≥25 kg by hand	61	13	52	11	85.2	84.6
Psychosocial aspects of work
Incentives	71	54	63	48	88.7	88.9
Time pressure	222	135	196	124	88.3	91.9
Lack of choice	61	34	54	32	88.5	94.1
Lack of support	58	49	50	40	86.2	81.6
Job dissatisfaction	72	48	67	42	93.1	87.5
Perceived job insecurity	135	121	123	109	91.1	90.1
Mental health
Good	62	44	51	41	82.3	93.2
Intermediate	89	54	84	46	94.4	85.2
Poor	95	84	83	78	87.4	92.9
Number of distressing somatic symptoms in past week
0	106	85	94	79	88.7	92.9
1	51	44	48	36	94.1	81.8
≥2	89	53	76	50	85.4	94.3
Neck/shoulder pain in past month at baseline
No	169	105	150	95	88.8	90.5
Yes	77	77	68	70	88.3	90.9
All subjects	246	182	218	165	88.6	90.7