Table 2.

Partly return to work (p-RTW) and fully return to work (f-RTW) for the Multidisciplinary Intervention group compared to the Brief Intervention group (reference group)

Months follow-up	p-RTW		f-RTW
	RR	95 % CIa	RR	95 % CIa
1	1.45	0.88–2.39	1.07	0.44–2.56
2	1.86	1.10–3.14*	1.07	0.53–2.18
3	2.24	1.28–3.91**	1.15	0.61–2.18
4	1.53	0.87–2.68	1.13	0.62–2.03
5	1.26	0.70–2.28	0.92	0.53–1.60
6	1.40	0.75–2.61	0.85	0.50–1.45
7	2.31	1.19–4.51*	1.11	0.66–1.87
8	1.90	0.97–3.72	0.98	0.59–1.64
9	1.61	0.77–3.37	0.93	0.57–1.54
10	1.67	0.77–3.61	1.18	0.72–1.95
11	1.62	0.75–3.53	1.27	0.78–2.09
12	1.60	0.74–3.46	1.10	0.67–1.81
13–23	Results not reported
24	0.85	0.42–1.71	1.25	0.75–2.06

Differences between the groups were estimated by multinomial regression analysis with “fully out of work” as reference category. Risk Ratio (RR), 95 % Confidence Interval (CI) with p values are presented

^aIndicates p value

* p value <0.05; ** p value <0.01