Table 2. Interobserver and intraobserver reliability.

Reliability
	Interobserver	Intraobserver
PCC (P value)	0.967 (< 0.001)	0.735 (< 0.001)
ICC (P value)	0.967 (< 0.001)	0.687 (< 0.001)

^PCC= Pearson's correlation coefficient

^ICC= intraclass correlation coefficient