Table 1 (IMAGE) Pediatric Academic Societies Caption Mean number of ED visits and Incident Rate Ratios (IRR) for ED visits by substance exposure, using no smoke exposure as the controls. Credit Dr. Adam Johnson Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.