The relationships between site of abdominal pain and the organs involved; A prospective observational study - Site of abdominal pain and diagnosis

The positive likelihood ratios between right subcostal and liver and biliary tract (LB), right subcostal and musculoskeletal, epigastric and esophagus, stomach, and duodenum (ESD), right or left flank and urinary tract, left flank and dermatological, mid-lower and intestinal ranged from 2.17 to 4.14. The positive likelihood ratios between epigastric and urinary tract, mid-lower and LB, periumbilical and urinary tract, generalized abdomen and ESD ranged from 0.17 to 0.25.