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

Table 3

Pearson correlation analysis.

Parameter		Weight change at 6; months	Weight change at 12; months
KOOS symptoms	Correlation coefficient	0.14768	0.07676
	Sig (two tailed)	0.5229	0.7621
	𝑛	21	18
KOOS pain	Correlation coefficient	−0.0697	−0.15328
	Sig (two tailed)	0.764	0.5437
	𝑛	21	18
KOOS daily living	Correlation coefficient	0.14679	−0.10796
	Sig (two tailed)	0.5255	0.9436
	𝑛	21	18
KOOS sports	Correlation coefficient	−0.162554	−0.38754
	Sig (two tailed)	0.4815	0.1121
	𝑛	21	18
KOOS quality of life	Correlation coefficient	0.22804	0.19418
	Sig (two tailed)	0.3201	0.4401
	𝑛	21	18
WOMAC pain	Correlation coefficient	−0.06586	0.11497
	Sig (two tailed)	0.7767	0.6496
	𝑛	21	18
WOMAC stiffness	Correlation coefficient	−0.025	0.1714
	Sig (two tailed)	0.9144	0.4965
	𝑛	21	18
WOMAC physical function	Correlation coefficient	−0.12644	−0.12462
	Sig (two tailed)	0.585	0.6222
	𝑛	21	18

Row one for each parameter shows the pearson correlation Coefficient. Row two is Rho > r under HO: Rho = 0. There was 𝑛=21 at 6 months and 𝑛=18 at 12 months.