Asthma prevalence was higher among opioid-dependent patients than the general population, and the prevalence is even greater amongst opioid-dependent women.

Researchers found that the prevalence of asthma among patients with opioid dependence was more than double the national rate.

Among 1966 patients with opioid dependence, 338 patients—or 17.2%—had a diagnosis of asthma. For comparison, the team used the national prevalence of asthma of 8.3% in 2016, according to the US Centers for Disease Control and Prevention (CDC).