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Table 3 Unadjusted and adjusted outcomes of regression modelling

From: Associations between pre-surgical daily opioid use and short-term outcomes following knee or hip arthroplasty: a prospective, exploratory cohort study

 Unadjusted Odds Ratio or Rate Ratio (95% CI)Adjusted Odds Ratio or Rate Ratio (95% CI)
Opioid userP-valueOpioid userP-value
Length of stay1.09 (0.98 to 1.21)0.1201.05 (0.94 to 1.17)0.365
Acute complications1.75 (1.02 to 3.00)0.0421.66 (0.94 to 2.94)0.082
Referral to inpatient rehabilitation1.95 (0.97 to 3.93)0.0631.86 (0.80 to 4.28)0.147
Complications or readmissions to 12 weeks1.21 (0.75 to 1.96)0.4291.05 (0.64 to 1.73)0.845
Oxford score 12 weeks, % in lower quartile*1.02 (0.56 to 1.83)0.9500.96 (0.51 to 1.80)0.897
EQVAS 12 weeks, % in lower quartile**1.53 (0.88 to 2.66)0.1341.41 (0.77 to 2.57)0.264
Ongoing opioid use at 12 -weeks5.06 (2.86 to 8.93)<  0.0015.38 (2.89 to 9.99)<  0.001