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. 2022 Feb 17;23:160. doi: 10.1186/s13063-022-06064-8

Table 3.

Intervention concealment

Capsule number OPIOID content NON-OPIOID content Quantity for a dose Total dispensed Capsule size Color
1 Hydrocodone 5 mg/acetaminophen 300 mg Ibuprofen 400 mg 1 20 AA Brown
2 Placebo Acetaminophen 500 mg 1 20 00 White