Table 5. Correlations between changes in LOAD, HCPI, CBPI (PSS, PIS and QOL and PVF and activity parameters for the longitudinal cohort.

Measure		LOAD	HCPI	CBPI PSS	CBPI PIS	CBPI QOL
LOAD	rs	1.000	0.735	0.495	0.524	−0.454
	Sig.		<0.01	<0.01	<0.01	<0.01
	n	80	80	80	80	80
HCPI	rs	0.735	1.000	0.462	0.561	−0.435
	Sig.	<0.01		<0.01	<0.01	<0.01
	n	80	80	80	80	80
CBPI PSS	rs	0.495	0.462	1.000	0.608	−0.366
	Sig.	<0.01	<0.01		<0.01	<0.01
	n	80	80	80	80	80
CBPI PIS	rs	0.524	0.561	0.608	1.000	−0.268
	Sig.	<0.01	<0.01	<0.01		0.016
	n	80	80	80	80	80
PVF	rs	−0.146	−0.174	−0.168	−0.116	0.199
	Sig.	0.199	0.125	0.139	0.310	0.078
	n	79	79	79	79	79
TWC	rs	−0.062	0.034	−0.004	0.056	0.030
	Sig.	0.611	0.783	0.972	0.646	0.804
	n	69	69	69	69	69
Q1A	rs	−0.047	−0.002	0.006	−0.140	0.000
	Sig.	0.704	0.987	0.960	0.250	1.000
	n	69	69	69	69	69
Q2A	rs	−0.208	−0.085	−0.123	−0.042	0.008
	Sig.	0.086	0.485	0.314	0.733	0.951
	n	69	69	69	69	69
Q3A	rs	−0.065	−0.021	−0.084	−0.002	0.095
	Sig.	0.596	0.866	0.494	0.985	0.438
	n	69	69	69	69	69
Q4A	rs	0.031	0.017	0.228	−0.014	−0.032
	Sig.	0.798	0.891	0.059	0.912	0.794
	n	69	69	69	69	69

r_s = Spearman’s Rank Correlation Coefficient, n = sample size for correlation.

Significance is set at p≤0.05 (2-tailed).