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. 2019 Mar 27;154(6):558–561. doi: 10.1001/jamasurg.2019.0155

Table. Participant Characteristics and Outcomes by Group.

Postoperative Opioid Disposal No. (%) P Value
Usual Care Educational Pamphlet Activated Charcoal Bag
No. 63 75 70
Self-reported opioid disposal 4-6 wk after surgical procedure 18 (28.6) 25 (33.3) 40 (57.1) .001
Preoperative characteristics
Age, mean (SD), y 46.92 (14.91) 46.00 (15.22) 45.10 (15.13) .79
Female sex 40 (63.5) 54 (72.0) 45 (64.3) .49
White race/ethnicity 52 (82.5) 70 (93.3) 61 (87.1) .15
Surgical service
Gynecology 4 (6.4) 8 (10.7) 9 (12.9) .44
Plastic 13 (20.6) 14 (18.7) 10 (14.3)
Orthopedic 22 (34.9) 28 (37.3) 24 (34.2)
Oncology 7 (11.1) 12 (16.0) 11 (15.7)
Otolaryngology 8 (12.7) 8 (10.7) 3 (4.3)
Other 9 (14.3) 5 (6.7) 13 (18.6)
Insurance type
Private only 45 (71.4) 56 (74.7) 48 (68.6) .86
Medicaid or Medicare only 9 (14.3) 7 (9.3) 10 (14.3)
Other 9 (14.3) 12 (16.0) 12 (17.1)
Disposal method
No. 18 25 40 <.001
In home
Garbage 2 (11.1) 1 (4.0) 0
Garbage after mixing with unpalatable substance 2 (11.1) 5 (20.0) 2 (5.0)
Activated charcoal bag 0 0 35 (87.5)
Flushed down the toilet 3 (16.7) 5 (20.0) 2 (5.0)
Out of home
Law enforcement 5 (27.8) 5 (20.0) 0
Authorized pharmacy or hospital 4 (22.2) 6 (24.0) 1 (2.5)
Take-back drive 0 1 (4.0) 0
Othera 2 (11.1) 2 (8.0) 0
a

Including “I don't know” (n = 3) and “Pharmacy gave me bag to mix with and throw away” (n = 1).