Table 3 Results of the controlled interrupted time series analysis of opioid prescribing rates adjusted for gabapentinoid prescribing in Scotland

Difference in intercept, β₄

220.83 (215.85, 225.81)

2.51

<0.01

Difference in pre-intervention trend, β₅

1.31 (1.07, 1.54)

0.12

<0.01

Difference in change in level, β₆

−9.09 (−16.69, −1.49)

3.84

0.02

Difference in change in trend, β₇

−3.09 (−3.54, −2.64)

0.23

<0.01

Difference in post-intervention trend, β₅₊₇

−1.78 (−2.13, −1.43)

0.17

<0.01

Adjusted relative change, %^a

−24.85 (−28.13, −21.61)

n/a

n/a

Durbin-Watson statistic

1.53

n/a

n/a