Dependent Variable | Coefficient | Estimate (95% CI)^{a} |
---|---|---|

≥1 prescription fills for codeine after tonsillectomy | Intercept | 32.3 (31.6 to 33.0) |

Month^{b} | −0.3 (−0.3 to −0.2) | |

Post^{b} | −13.3 (−14.5 to −12.1) | |

Monthsafter^{b} | 0.1 (0.1 to 0.2) | |

≥1 prescription fills for an alternative opioid after tonsillectomy | Intercept | 35.1 (33.2 to 37.0) |

Month^{b} | 0.2 (0.1 to 0.3) | |

Post^{b} | −1.2 (−3.5 to 1.0) | |

Monthsafter^{b} | −0.2 (−0.3 to −0.1) |

↵a Coefficients from regressions were multiplied by 100 and are expressed as percentage point changes.

↵b The coefficient for month represents the absolute percentage point change per month over the study period; the coefficient for post represents the immediate level change after the investigation ended; and the coefficient for monthsafter represents the slope change after the investigation ended.