Table 3 Mean improvements in functional status and pain from baseline to 12 weeks and 26 weeks respectively.

Outcome	Mean (SD) improvement		Effect of the graded activity intervention (95% CI)
	Graded activity	Usual care
Functional status (n = 110)
12 weeks (n = 101)	11.5 (5.6)	11.0 (5.3)	1.78 (−0.06 to 3.57)
26 weeks (n = 91)	7.9 (5.9)	7.5 (6.5)	1.99 (−0.33 to 4.32)
Pain (n = 110)
12 weeks (n = 99)	5.3 (2.2)	4.9 (2.2)	0.43 (−0.31 to 1.16)
26 weeks (n = 92)	3.7 (2.5)	3.2 (2.5)	1.03 (0.05 to 2.01)

*Adjusted for the baseline value of the outcome measure, prior intervention, and gender.