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Table 3 Intervention concealment

From: The Opioid Analgesic Reduction Study (OARS)—a comparison of opioid vs. non-opioid combination analgesics for management of post-surgical pain: a double-blind randomized clinical trial

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