. 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 3.

Correlations between changes in 6MWD and changes in self-report clinical outcomes

Change (Δ) 6MWD (Baseline to Wk 12)	Pearson’s ρ (95% CI)	p-value
Δ FIQ-Total	−0.108 (−0.248, 0.036)	0.142
Δ FIQ-PI	−0.184 (−0.319, −0.040)	0.012
Δ SF36-PF	0.201 (0.059, 0.335)	0.006
FIQ Ratio	−0.089 (−0.229, 0.056)	0.229
Δ 6MWD (Baseline to Wk 36)
Δ FIQ-Total	−0.201 (−0.336, −0.056)	0.007
Δ FIQ-PI	−0.247 (−0.378, −0.105)	0.001
Δ SF36-PF	0.200 (0.056, 0.335)	0.007
FIQ Ratio	−0.203 (−0.338, −0.059)	0.006

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