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. 2020 Aug 31;216:108265. doi: 10.1016/j.drugalcdep.2020.108265

Table 3.

Opioid overdose-risk behaviors as a function of time.

Baseline Month 12 Statistical Test from Pre-Post Regression
Escalating Opioid Dosage, n, % 38 (86.4 %) 7 (15.9 %) X2(1) = 47.14, p < 0.0001
Injecting Opioid, n, % 39 (88.6 %) 27 (61.4 %) X2(1) = 15.87, p < 0.0001
Benzodiazepines Co-Use, n, % 14 (31.8 %) 7 (16.3 %) X2(1) = 4.45, p = 0.0349
Alcohol Co-Use, n, % 12 (27.3 %) 5 (11.4 %) X2(1) = 12.72, p = 0.0004
Other Drug Co-Use, n, % 34 (77.3 %) 30 (68.2 %) X2(1) = 2.60, p = 0.11
Testing Opioid before Usea, n, % 13 (29.5 %) 13 (29.5 %) X2(1) = 0.13, p = 0.72
Following Abstinence with Same Level of Use, n, % 12 (27.3 %) 4 (9.3 %) X2(1) = 19.47, p < 0.0001
Enrolled in Methadone or Suboxone Treatmenta, n, % 0 (0.0 %) 14 (31.8 %) --b
>4 Alcoholic Drinks/Day, n, % 5 (11.4 %) 0 (0 %) --b
Total Score (0–14), mean (SD) 6.2 (2.8) 2.4 (2.1) X2(1) = 85.50, p < 0.0001
a

Item represents protective factor, rather than risk factor.

b

Analysis could not be conducted due to extreme values.