Table 5. Previous studies showing significant association between H. pylori infection and PPU.

H. pylori: Helicobacter pylori; PPU: perforated peptic ulcer

Study	Year	Prevalence of H. pylori infection in PPU, %	Association
Ugochukwu et al. [8]	2013	65-70	Significant
Dogra et al. [9]	2014	92	Significant
John B et al. [10]	2017	47	Significant
Sebastian et al. [12]	2001	83.3	Significant