Table 1

Associations with leaving the original job among patients who were in work when their hip or knee problem began

	Still in original job (n = 105)	Number* and HR† (95% CI)
		Left original job because of hip or knee problem (n = 74)			Left original job for another reason (n = 78)
		Unadjusted		Adjusted‡	Unadjusted		Adjusted‡
*Numbers restricted to those providing full information.
†All hazard ratios calculated relative to remaining in the original job.
‡Adjusted for all of the factors in the table.
§Duration of symptoms was analysed as a continuous variable and hazard ratios are for a ten year increase in duration.
Sex
Male	49	37	1.0	1.0	33	1.0	1.0
Female	56	37	0.9 (0.6–1.5)	0.9 (0.5–1.5)	45	1.1 (0.7–1.7)	1.3 (0.7–2.3)
Current age (years)
⩽34	5	5	1.1 (0.4–2.7)	1.6 (0.6–4.3)	5	1.1 (0.4–2.6)	1.6 (0.6–4.2)
35–44	12	9	0.9 (0.5–1.9)	1.2 (0.6–2.5)	6	0.7 (0.3–1.6)	0.9 (0.4–2.1)
45–54	29	10	0.6 (0.3–1.1)	0.7 (0.3–1.3)	14	0.7 (0.4–1.2)	0.7 (0.4–1.3)
55–65	59	50	1.0	1.0	53	1.0	1.0
Duration of symptoms§	105	74	1.5 (1.1–1.9)	1.4 (1.1–1.9)	78	1.6 (1.3–1.9)	1.6 (1.3–2.0)
Current disability
Low	67	30	1.0	1.0	42	1.0	1.0
High	38	44	1.7 (1.1–2.8)	1.6 (1.0–2.6)	36	1.3 (0.8–2.0)	1.1 (0.7–1.7)
Type of work
Sedentary	28	6	1.0	1.0	27	1.0	1.0
Non-sedentary	77	68	2.7 (1.2–6.1)	2.0 (0.8–5.0)	51	0.8 (0.5–1.3)	0.9 (0.5–1.5)
Working hours
Full-time	76	49	1.0	1.0	61	1.0	1.0
Part-time	29	25	1.2 (0.7–1.9)	1.2 (0.7–2.2)	17	0.8 (0.5–1.4)	0.8 (0.5–1.6)
Size of organisation
⩾10	89	46	1.0	1.0	62	1.0	1.0
<10	16	28	1.9 (1.2–3.0)	1.5 (0.9–2.5)	16	1.2 (0.7–2.1)	1.0 (0.5–1.8)