Activity level		Hazard ratio*	Pvalue†
At rest:
	50 % reduction in pain	0.83 (0.60 to 1.15)	0.271
	75 % reduction in pain	0.84 (0.60 to 1.16)	0.279
	Complete pain relief	0.93 (0.66 to 1.30)	0.654
With activity:
	50 % reduction in pain	1.18 (0.85 to 1.63)	0.330
	75 % reduction in pain	1.49 (1.05 to 2.12)	0.027