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. Author manuscript; available in PMC: 2021 Oct 4.
Published in final edited form as: Surgery. 2020 Jun 4;168(2):244–252. doi: 10.1016/j.surg.2020.04.013

Table III.

Adjusted ORs for refill within 90 days after discharge and for initial fill

Outcome: Refill Outcome: Initial fill


OR (95% CI) P value OR (95% CI) P value
Cost-sharing (ref: No LIS, no premium or copay subsidy)
 LIS with full subsidy 1.39 (1.19–1.69) < .001 1.29 (1.10–1.51) .002
 LIS with partial subsidy 1.18 (0.88–1.55) .282 0.98 (0.74–1.30) .896
Preoperative opioid use (ref: Naïve)
 Intermittent 1.93 (1.79–2.08) < .001 1.10 (1.01–1.20) .023
 Chronic 11.93 (10.30–13.83) < .001 1.34 (1.19–1.51) < .001
Surgery Type (ref: Hip replacement)
 Knee replacement 3.39 (3.12–3.72) < .001 1.30 (1.18–1.43) < .001
 Spine surgery 1.33 (1.15–1.54) < .001 0.90 (0.77–1.05) .169
 Shoulder surgery 1.10 (0.95–1.27) .205 1.14 (0.97–1.35) .110
Initial opioid prescription size* 1.01 (1.00–1.01) .009
Age (Ref: 65–69)
 70–74 0.88 (0.81–0.96) .003 0.85 (0.77–0.94) .001
 75–79 0.74 (0.68–0.82) < .001 0.76 (0.68–0.84) < .001
 80–84 0.66 (0.58–0.75) < .001 0.57 (0.50–0.65) < .001
 85+ 0.52 (0.43–0.64) < .001 0.54 (0.44–0.66) < .001
Race (Ref: White)
 Black 1.31 (1.08–1.58) .006 0.82 (0.68–0.98) .033
 Others 0.88 (0.70–1.10) .251 0.90 (0.71–1.14) .384
 Unknown 0.94 (0.66–1.32) .707 1.09 (0.71–1.65) .702
Sex (ref: Male)
 Female 1.26 (1.17–1.35) < .001 1.08 (1.00–1.17) .055
Charlson comorbidity index (ref: CCI = 0)
 1–2 1.04 (0.97–1.13) .261 1.01 (0.93–1.10) .749
 3–4 1.01 (0.90–1.15) .823 0.91 (0.80–1.03) .141
 5+ 0.87 (0.72–1.05) .147 0.86 (0.71–1.04) .121
Tobacco use (ref: Not use) 1.10 (0.99–1.22) .080 0.94 (0.84–1.04) .235
Mental health disorder
 Anxiety 1.22 (1.04–1.44) .018
 Depression 1.15 (0.99–1.33) .072
 Adjustment disorder 1.50 (0.76–2.94) .238
 Disruptive disorder 0.42 (0.19–0.93) .032
 Personality disorder 0.40 (0.10–1.56) .187
 Psychosis 0.68 (0.37–1.27) .225 0.70 (0.39–1.24) .217
 Other mental health disorder 1.39 (0.84–2.30) .194
Pain disorder
 Arthritis pain 0.92 (0.84–1.01) .083 0.92 (0.83–1.02) .123
 Back pain 1.07 (0.97–1.17) .177
 Neck pain 0.82 (0.72–0.93) .002 0.85 (0.74–0.96) .012
 Other pain 1.11 (1.00–1.23) .057 0.94 (0.84–1.05) .276

CCI, Charlson comorbidity index.

*

In 10 tablets of 5 mg oxycodone; including prescriptions filled between 14 d.