The Effects of Bariatric Surgery Weight Loss on Knee Pain in Patients with Osteoarthritis of the Knee

Table 1

Statistical analysis of KOOS and WOMAC scores comparing values at baseline and 6 months. Values listed are the change in scores over a 6-month period.

KOOS and WOMAC scores: baseline to 6-month comparison
	Mean	Q1	Median	Q3	Signed rank 𝑃 value
WOMAC pain	−4.83	−7.29	−5.2	−3.12	<0.0001
WOMAC stiffness	−2.33	−4.17	−3.13	0	0.0001
WOMAC physical function	−17.76	−28.13	−17.71	−8.34	<0.0001
KOOS symptoms	8.64	0	8	12	0.0003
KOOS pain	17.78	4.44	17.78	31.11	<0.0001
KOOS daily living	13.43	5.29	11.76	24.7	<0.0001
KOOS sports	15.76	0	12	32	0.001
KOOS QOL	15.8	5	15	30	<0.0001

Q1: 1st quartile, Q3: 3rd quartile, QOL: quality of life. For all categories n = 24. Values listed above are measured as differences in WOMAC/KOOS scores subtracted from baseline.