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. 2019 Apr 30;11(1):73–78. doi: 10.1016/j.jcot.2019.04.027

Table 2.

Comparison of quality outcomes between preoperative non-chronic and chronic THA opioid users, as well as between preoperative chronic THA opioid users who went on to change opioid use status 6 months following surgery.

Quality Metrics Preoperative
Postoperative (6-months)
Non-chronic opioid users (n = 202) Chronic opioid users (n = 54) p-value Users cured of chronic use (n = 41) Persistent chronic users (n = 13) p-value
Discharge disposition (%) 0.779 0.080
 HHS 178 (88.1) 45 (83.3) 35 (85.4) 10 (76.9)
 Home with self-care 3 (1.5) 1 (1.9) 0 1 (7.7)
 SNF 17 (8.4) 7 (13.0) 6 (14.6) 1 (7.7)
 Inpatient rehabilitation 4 (2.0) 1 (1.9) 0 1 (7.7)
Mean LOS, days (SD) 2.4 (1.3) 2.4 (1.2) 0.998 2.2 (0.9) 3.1 (1.6) 0.010
Mean VBP costs (SD) 4955.1 (3952.8) 5501.1 (4573.1) 0.384 5434.4 (4400.9) 5711.5 (5138.2) 0.850
30-day readmission (%) 2 (1.0) 3 (5.6) 0.031 1 (2.4) 2 (15.4) 0.076
90-day readmission (%) 6 (3.0) 5 (9.3) 0.043 2 (4.9) 3 (23.1) 0.049
6-month readmission (%) 13 (6.4) 8 (14.8) 0.046 4 (9.8) 4 (30.8) 0.063
# ER visits (%) 11 (5.4) 2 (3.7) 0.605 1 (2.4) 1 (7.7) 0.233
Avg Office visits (SD) 2.1 (1.7) 2.4 (1.5) 0.239 2.5 (1.4) 2.0 (1.7) 0.286

ER – Emergency room; - HHS - Home with healthcare services LOS – Length of stay; SD – Standard deviation; SNF - Skilled nursing facility; VBP – Value-Based Purchasing.