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Instrumental variable regression estimated outcomes of orthopedic surgery patients, comparing IV acetaminophen recipients to IV opioid monotherapy recipients
| Outcome | Model estimate (95% CI) | P value |
|---|---|---|
| Length of stay (days) | −0.51 (−0.58 to −0.44) | <0.0001 |
| Hospitalization cost (US $) | −634.8 (−1032.5 to −237.1) | 0.0018 |
| Morphine equivalent dose (mg) | −1.9 (−3.0 to −0.75) | 0.0011 |
CI confidence interval, IV intravenous
