Table 2 –

Mean and mean differences in pain scores at various points of follow-up, the data for Figure 5

	Placebo (N = 50)	Drug (N = 50)	Difference	95% CI	p value
Baseline	6.0 (0.47)	5.9 (0.59)	0.1	−0.2, 0.3	0.6
1 mo	3.1 (0.44)	2.0 (0.55)	1.0	0.8, 1.2	<0.0001
6 mo	4.0 (0.43)	3.9 (0.55)	0.1	−0.1, 0.3	0.2

CI = confidence interval.

The difference is calculated as the mean pain score in the drug arm subtracted from the mean pain score in the placebo arm. The p values are generated from the Wald test.