Table 1.

Distribution According to OLGA Classification based on Serologic-Histologic Criteria

Serologic criteria	No stomach corpus atrophy Serol-histol	Mild corpus atrophy Serol-histol	Moderate corpus atrophy Serol-histol	Severe corpus atrophy Serol-histol
No antrum atrophy	0 – 0	2 – 0	0 – 0	5 – 0
Mild antrum atrophy	1 – 0	3 – 7	10 – 2	10 – 11
Moderate antrum atrophy	1 – 0	9 – 7	15 – 27	11 – 10
Severe antrum atrophy	0 – 0	2 – 1	3 – 6	3 – 4