Association of serum pepsinogen with degree of gastric mucosal atrophy in an asymptomatic population

Figure 1 Operating characteristics curve analysis of pepsinogen I and pepsinogen I/pepsinogen II ratio for the low-risk group. The Operative Link for Gastritis Assessment (OLGA) I and II groups were combined as the low-risk group and compared with the OLGA-0 group. PG: Pepsinogen; PGR: Pepsinogen I/pepsinogen II ratio; OLGA: Operative Link for Gastritis Assessment.

Figure 2 Operating characteristics curve analysis of pepsinogen I and pepsinogen I/pepsinogen II ratio for the high-risk group. The Operative Link for Gastritis Assessment (OLGA) III and IV groups were combined as the high-risk group and compared with OLGA 0, I, and II groups. PG: Pepsinogen; PGR: Pepsinogen I/pepsinogen II ratio; OLGA: Operative Link for Gastritis Assessment.