Table 5.

Interobserver agreement (Kappa value)*.

Inter-observer agreement	Nugent's method		BV by Hay's
	BV	Normal	Grade I	Grade III
Between PB and RC	0.82	0.75	0.91	0.88
Between PB and SG	0.67	0.63	0.72	0.76

*Intermediate scores in Nugent's and grade II in Hay's and Ison's classification have been excluded for calculating interobserver agreement.