Table 3. Inter-observer and intra-observer correlation index.

Measurement	Inter-observer	Intra-observer 1	Intra-observer 2
Co-Go	0.93	0.89	0.94
Cr-Go	0.92	0.97	0.99
GA	0.89	0.97	0.97
Go-Go	0.92	0.97	0.99
Co-Pg	0.93	0.85	0.97