Table 2b.

Secondary Outcomes, Differences between Groups, and Changes over Time*

	Secondary Randomized Outcome Comparison
Variable	Placebo Acupuncture (N=109)	True Acupuncture (N=104)	p-value
BPI Average Pain
Mean at baseline	5.70 (5.34, 6.06)	5.69 (5.29, 6.09)	0.454
at 12 weeks	3.93 (3.52, 4.34)	4.03 (3.58, 4.48)	0.703
at 26 weeks	4.69 (4.23, 5.15)	4.54 (4.03, 5.04)	0.780
Mean Individual change
at 12 weeks	−1.73 (−2.22, −1.24)	−1.48 (−2.01, −0.95)	0.427
at 26 weeks	−1.05 (−1.57, −0.53)	−0.96 (−1.60, −0.31)	0.774
Mean % change
at 12 weeks	−24% (−33%, −15%)	−24% (−34%, −15%)	0.522
at 26 weeks	−13% (−25%, −1%)	−15% (−26%, −3%)	0.718
SF-36 Physical Subscale
Mean baseline score	32.1 (30.5, 33.7)	31.7 (30.2, 33.3)	0.201
Mean score at 12 weeks	36.9 (34.8, 38.9)	35.4 (33.5, 37.3)	0.609
Mean change at 12 weeks	4.30 (2.61, 6.00)	3.01 (1.09, 4.93)	0.353
Mean % change at 12 weeks	16.1% (10.2%, 22.1%)	12.8% (6.0%, 19.6%)	0.312
SF-36 Mental subscale
Mean baseline score	49.7 (47.2, 52.2)	46.2 (43.8, 48.5)	0.029
Mean score at 12 weeks	53.9 (51.8, 56.0)	52.0 (49.5, 54.6)	0.169
Mean change at 12 weeks	3.33 (1.30, 5.24)	5.01 (2.88, 7.15)	0.848
Mean % change at 12 weeks	10.5% (5.5%, 15.5%)	14.8 (9.00%, 20.6%)	0.999
6 Minute Walk Test (in feet)
Mean baseline score	1126 (1070, 1182)	1032 (970, 1094)	0.027
Mean score at 12 weeks	1147 (1086, 1209)	1119 (1046, 1195)	0.562
Mean change at 12 weeks	38.5 (−7.04, 84.0)	55.5 (1.10, 109.1)	0.633
Mean % change at 12 weeks	8% (−1%, 17%)	9% (2%, 16%)	0.847
Patient Global Assessment
≥ “Slightly better” at 12 weeks	79 (72.5%)	78 (75%)	0.676
≥ “Slightly better” at 26 weeks	52 (62.7%)	52 (69.3%)	0.738
≥ “Better” at 12 weeks	44 (40.4%)	36 (34.6%)	0.386
≥ “Better” at 26 weeks	27 (32.5%)	24 (32%)	0.772
≥ “Much better” at 12 weeks	17 (15.6%)	11 (10.6%)	0.278
≥ “Much better” at 26 weeks	12 (14.5%)	9 (12%)	0.564

Abbreviation: BMI=body mass index; Yrs=Years; BPI=Brief Pain Inventory, Min=minutes