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. Author manuscript; available in PMC: 2011 Sep 20.
Published in final edited form as: J Ethn Subst Abuse. 2010;9(2):106–114. doi: 10.1080/15332641003772587

Table 3.

Adverse events, drug use and attrition during 28 day buprenorphine administration in Caucasian, African-American and Hispanic participants

Race/ Ethnic Group Caucasian
n = 558A
African-
American
n = 93B
Hispanic
n = 73C
p-value
Total Adverse Events,Mean # of events ± SD 5.2 ± 4.0 2.9 ± 2.0 4.9 ± 3.0 < 0.001
Adverse Events Definitely Not Study Drug Related, Mean # of events ± SD 3.7 ± 3.3 1.5 ± 1.4 3.8 ± 3.0 < 0.001
Opioid-positive Urine Test at Randomization, n(%) 144 (36.7%) 18 (31.0%) 20 (41.7%) 0.520
Any Drug-positive Urine Test at Randomization, n(%) 260 (66.3%) 37 (63.8%) 33 (68.8%) 0.862
Attrition during Buprenorphine administration, n(%) 165 (29.6%) 33 (35.5%) 25 (34.3%) 0.415
Buprenorphine dose at randomization, mean score ± SD 20.4 ± 5.2 18.8 ± 5.9 21.2 ± 5.1 0.045
A

At randomization, the sample size is reduced to 392 for Urine test, 393 for buprenorphine dose.

B

At Randomization, the sample size is reduced to 58 for Urine test, 60 for buprenorphine dose.

C

At randomization, the sample size is reduced to 48 for Urine test, and buprenorphine dose.