“…Fourteen studies 15 , 16 , 17 , 18 , 19 , 21 , 22 , 25 , 26 , 27 , 29 , 30 , 31 , 33 (12 RCTs 15 , 16 , 17 , 18 , 19 , 21 , 22 , 25 , 26 , 27 , 30 , 31 and 2 retrospective studies 29 , 33 ) addressed the adverse effects and dropout associated with pharmacologic interventions (eTable 4 in the Supplement ). No study reported harms of opioids compared with other opioids or other opioid dosing.…”