Table 3.

Results from linear regression examining the association between FTS use and overdose risk behaviors when FTS results are positive relative to negative

	Unadjusted			Adjustedb
	Coefficienta	95% CI	p Value	Coefficienta	95% CI	p Value
Safer	0.20	0.14 to 0.25	< 0.001	− 0.00	− 0.36 to 0.36	0.998
Riskier	− 0.19	− 0.25 to − 0.13	< 0.001	− 0.27	− 0.64 to 0.11	0.171

Abbreviations: FTS, fentanyl test strip. CI; confidence interval

^aCoefficients of difference between positive and negative behaviors. Positive values indicate that FTS users perform the type of behavior more often when there is a positive FTS result compared to a negative result

^bAdjusted models include indicators for site, race/ethnicity, age, gender, drug of choice, indicator of polysubstance use, times used per day, and lifetime overdose count