Table 2 Weighted percentage of Past Year Heroin, illicitly manufactured fentanyl (IMF), and either heroin or IMF use. **Bonferroni corrected confidence interval. Setting significant level of α = 0.05 and accounting for 43 comparisons, the corrected significant level (α) is equal to 0.05/43 = 0.0011 and we constructed 99.88% confidence intervals. The absolute difference formula: NMURx prevalence minus NSDUH prevalence

Past year

0.39

(0.30, 0.52)

0.60

(0.54, 0.67)

0.21

(0.09, 0.32)

0.24

(0.18, 0.33)

0.74

(0.67, 0.81)

0.49

(0.39, 0.60)

0.52

(0.40, 0.69)

1.05

(0.97, 1.14)

0.53

(0.38, 0.67)

 Past

 Month

0.26

(0.19, 0.38)

0.29

(0.25, 0.33)

0.02

(-0.08, 0.12)

0.10

(0.07, 0.16)

0.41

(0.36, 0.47)

0.31

(0.24, 0.38)

0.32

(0.23, 0.43)

0.57

(0.51, 0.64)

0.25

(0.14, 0.36)

 2–12

 months

0.13

(0.09, 0.19)

0.32

(0.27, 0.37)

0.19

(0.12, 0.25)

0.14

(0.08, 0.22)

0.32

(0.28, 0.37)

0.19

(0.11, 0.26)

0.20

(0.14, 0.3)

0.48

(0.42, 0.55)

0.28

(0.18, 0.37)