Interestingly, use of both drugs together was associated with improved ORR [odds ratio (OR) =2.8], and use of opioids without statins was associated with worse ORR (OR =0.34), though these results did not reach statistical significance (P=0.06).
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Survival and response outcomes in patients with recurrent/metastatic head and neck cancer treated with opioids and statins: an exploratory pilot study.
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Opioid use without statin use trended toward worse ORR, again not quite statistically significant at P=0.06, suggesting that statins may somehow negate the negative impact of opioids.
OS had a similar trend as PFS in these groups, that also did not quite reach significance (HR =1.618 with 95% CI of 0.937 to 2.794, P=0.08), with a post-hoc power analysis indicating 79.5% power to detect a difference in 5-year survival of this magnitude with alpha of 0.05 ( Figure 3 ).