Prevalence and associated factors of opioid-related disorders among patients with chronic pain: a single-center retrospective study in a Chinese tertiary hospital.

However, several well-documented associated factor reported in previous studies—specifically sex, history of psychiatric treatment, income status, and concomitant benzodiazepine use—did not reach statistical significance in our analysis [ 43 – 45 ].

also in 111,027 other papers