Table 2 Bivariable and multivariable GEE analyses to estimate the relationship between OAT dissatisfaction and fentanyl exposure

OAT dissatisfaction

1.20 (1.00–1.44)

1.34 (1.08–1.66)

1.30 (1.07–1.58)

1.47 (1.16–1.87)

Age (per year increase)

0.94 (0.93–0.96)

0.95 (0.94–0.97)

0.94 (0.92–0.95)

0.95 (0.93–0.96)

Male gender

0.89 (0.68–1.15)

0.86 (0.64–1.15)

White

1.12 (0.86–1.45)

1.04 (0.78–1.40)

Homelessness^a

1.87 (1.38–2.53)

1.31 (0.93–1.84)

1.94 (1.37–2.75)

1.44 (0.97–2.13)

 ≥ Daily stimulant use^a,b

1.20 (0.96–1.50)

1.20 (0.93–1.56)

Injection drug use^a

4.49 (3.47–5.82)

4.23 (3.25–5.52)

4.49 (3.37–5.99)

4.24 (3.15–5.71)

Most recent OAT = methadone

0.92 (0.71–1.20)

NA

NA