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. 2022 Mar 31;89(7):1938–1947. doi: 10.1111/bcp.15318

FIGURE 4.

FIGURE 4

Comparison of urine norbuprenorphine:buprenorphine ratios of participants on low (< 8 mg) vs high (> 8 mg) BUP dose. Comparison with Mann–Whitney test, *** P = .0002