1. Date of download: 6/3/2016 From: Surgery Versus Nonsurgical Treatment of Lumbar Spinal Stenosis: A Randomized Trial Ann Intern Med. 2015;162(7):465-473. doi:10.7326/M14-1420 Study flow diagram. PT = physical therapy. Figure Legend: Copyright © American College of Physicians. All rights reserved.American College of Physicians

2. Date of download: 6/3/2016 From: Surgery Versus Nonsurgical Treatment of Lumbar Spinal Stenosis: A Randomized Trial Ann Intern Med. 2015;162(7):465-473. doi:10.7326/M14-1420 Adjusted means for physical function over time in the surgery and PT groups. Adjusted means and 95% CIs of the physical function scale of the SF-36 for the surgery and PT groups over time from linear mixed-effects models (adjusted for sex, surgeon, and baseline age). The SF-36 scale ranges from 0 to 100, with lower scores indicating more severe symptoms. PT = physical therapy; SF-36 = Short Form-36. Figure Legend: Copyright © American College of Physicians. All rights reserved.American College of Physicians

3. Date of download: 6/3/2016 From: Surgery Versus Nonsurgical Treatment of Lumbar Spinal Stenosis: A Randomized Trial Ann Intern Med. 2015;162(7):465-473. doi:10.7326/M14-1420 Physical function over time, by treatment received. The SF-36 scale ranges from 0 to 100, with lower scores indicating more severe symptoms. PT = physical therapy; SF-36 = Short Form-36. Figure Legend: Copyright © American College of Physicians. All rights reserved.American College of Physicians

4. Date of download: 6/3/2016 From: Surgery Versus Nonsurgical Treatment of Lumbar Spinal Stenosis: A Randomized Trial Ann Intern Med. 2015;162(7):465-473. doi:10.7326/M14-1420 Adjusted means for physical function over time using intention-to-treat analyses, by treatment and sex. Adjusted means of the physical function scale of the SF-36 for the surgery (solid lines) and PT (dotted lines) groups by sex over time from linear mixed-effects models (adjusted for surgeon and baseline age). Sex-by- group-by-time interaction (P = 0.066), group-by-time interaction for men (P = 0.10), and group-by-time interaction for women (P = 0.50). The SF-36 scale ranges from 0 to 100, with lower scores indicating more severe symptoms. PT = physical therapy; SF-36 = Short Form-36. Figure Legend: Copyright © American College of Physicians. All rights reserved.American College of Physicians