Table 4.

Interobserver agreement on histopathologic features of AH among 5 pathologists

Histologic feature	K value (95% CI)	Strength of agreement	P value
Fibrosis stage (None/Portal fibrosis/Expansive periportal fibrosis/Bridging fibrosis/Cirrhosis)	0.42 (0.31–0.51)	Moderate	<0.001
Lobular fibrosis (None/Zonal 3/Zonal 3+2/Panlobular fibrosis)	0.31 (0.19–0.45)	Fair	<0.001
Pericellular fibrosis (Absent/Present)	0.41 (0.26–0.63)	Moderate	<0.001
Steatosis (None/<5%/5–33%/33–66%/>66%)	0.43 (0.31–0.57)	Moderate	<0.001
Bilirubinostatis (None/Hepatocellular/Canalicular or ductular/Both)	0.52 (0.36–0.72)	Moderate	<0.001
Ballooning (None/Occasional/Marked)	0.37 (0.26–0.50)	Fair	<0.001
Mallory bodies (None/Occasional/Marked)	0.44 (0.30–0.58)	Moderate	<0.001
Megamitochondria (Absent/Present)	0.20 (0.03–0.46)	Slight	<0.001
Polymorphonuclear leukocyte infiltration (None/Mild/Severe)	0.52 (0.40–0.68)	Moderate	<0.001