Table 3.

Analysis of inter-observer agreement for cytological grading systems.

	HP	Fisher's system	Robinson system	Dabbs' system	Khan's system	Taniguchi's system	Mouriquand's system	Howell's system
Inter-observer agreement	69/72	61/72	60/72	58/72	57/72	58/72	55/72	54/72
	95.8%	84.7%	83.3%	80.5%	79.1%	80.5%	76.3%	75%
Kappa value	0.921	0.616	0.708	0.56	0.615	0.618	0.561	0.499
	Almost perfect	substantial	substantial	moderate	substantial	substantial	moderate	moderate