RT Journal A1 Rastegar DA T1 SAfety of opioids in older adults JF Archives of Internal Medicine JO Archives of Internal Medicine YR 2011 FD June 27 VO 171 IS 12 SP 1126a OP 1126 DO 10.1001/archinternmed.2011.264 UL http://dx.doi.org/10.1001/archinternmed.2011.264 AB Solomon and colleagues1 provide observational evidence that the use of opioids in older adults is associated with a number of adverse outcomes, including fracture, cardiovascular events, and all-cause mortality. While the increase in fracture and all-cause mortality seems plausible, the association with cardiovascular events is surprising. The authors acknowledge that this finding was unexpected and could be due to residual confounding. One unmeasured factor that could explain this observation is smoking. A number of studies have shown that smokers are more likely to be prescribed opioids for chronic pain.2- 3 Moreover, the association with smoking may be contributing to the observed increase in all-cause mortality and risk of fracture.4 Smoking is an important factor that needs to be taken into account when investigating these associations.