
Keywords: خونریزی بالای دستگاه گوارش; Upper Gastrointestinal Hemorrhage; Lower Gastrointestinal Hemorrhage; Stroke; Myocardial Infarction; ACS; acute coronary syndrome; CI; confidence interval; GIB; gastrointestinal bleeding; HR; hazard ratio; LDA; low-dose aspirin; NSAIDs; nonsteroidal anti-