. Author manuscript; available in PMC: 2018 Mar 1.

Published in final edited form as: Am J Phys Med Rehabil. 2016 Oct;95(10):738–745. doi: 10.1097/PHM.0000000000000485

Table 2.

Longitudinal changes in 6MWD and self-report clinical outcomes

Measurement	Baseline	Wk 12	Wk 36	Mean change Baseline – Wk 36	p value
6MWD (m)	482.9 (80.5)	510.8 (84.4)	517.7 (80.9)	34.4 (65.2)	<0.001
FIQ-Total (0–100)^†	66.4 (12.6)	54.4 (18.4)	53.0 (20.6)	−13.8 (18.7)	<0.001
FIQ-PI (0–10)^†	5.4 (1.6)	3.9 (2.0)	3.8 (2.4)	−1.6 (2.3)	<0.001
SF36-PF (0–100)^‡	41.5 (19.2)	51.4 (21.5)	52.2 (22.8)	11.4 (20.3)	<0.001

Values are the means (standard deviation) unless otherwise indicated. Mean change is from baseline to week 36.

^†

Higher score indicates a worse state of health.

^‡

Lower score indicates a worse state of health.

Abbreviations: 6MWD = six-minute walk distance; Mean change = change from baseline to week 36; FIQ = Fibromyalgia Impact Questionnaire (PI, physical impairment); SF36-PF = Short Form 36 (Physical Function).