Table 6:

Correlation of PPST with outcome measures at 6 and 12 months

Outcome	PPST 1–4		PPST 5–9		PPST total		PPST 1–4		PPST 5–9		PPST total
	6 months								12 months
	M(IQR)	p-value	M(IQR)	p-value	M(IQR)	p-value		p-value	M(IQR)	p-value	M(IQR)	p-value
CPSP (Yes)	1(0,2)	0.03	1(0,2)	0.19	2(1,4)	0.04	1(0,2)	0.20	1(0,3)	0.02*	2(1,4)	0.04
CPSP (No)	0(0,2)		0(0,2)		1(0,3)		1(0,3)		0(0,1)		1(0,3)
	SCC	p-value	SCC	p-value	SCC	p-value	SCC	p-value	SCC	p-value	SCC	p-value
FDI	0.350	<0.001*	0.266	0.008*	0.351	<0.001*	0.247	0.047	0.328	0.008*	0.347	0.005*
PedsQL total	−0.440	<0.001*	−0.226	0.028	−0.378	<0.001*	−0.167	0.200	−0.319	0.011*	−0.249	0.051
PedsQL physical	−0.368	<0.001*	−0.267	0.009*	−0.357	<0.001*	−0.274	0.031*	−0.405	0.001*	−0.393	0.002*
PedsQL psychosocial	−0.495	<0.001*	−0.380	<0.001*	−0.481	<0.001*	−0.434	<0.001*	−0.407	0.001*	−0.466	<0.001*

CPSP: chronic postsurgical pain, PPST: pediatric pain screening tool, FDI: Functional disability index, PedsQL: pediatric quality of life measure. SCC: Spearman Correlation Coefficient; M(IQR): Median (Interquartile range)

^*p v alue less than 0.025 was considered to be significant