Parameters | Baseline estimate | Standard error | Probability distribution^{*} | Data source |
---|---|---|---|---|

Outpatient UATU | ||||

RR of a failed outpatient UATU hysteroscopy | 0.412 | 0.09 | Lognormal | Clark et al.31 and chart review |

Outpatient hysteroscopy costs, $^{†} | 152 | 14 | γ (126.8, 1.2) | OCCI |

Physician costs for diagnostic hysteroscopy procedure, $^{†} | 105 | Fixed | Schedule of Benefits | |

Costs of surgical procedure in UATU^{‡} | $600 | $150 | γ (16.0, 37.5) | Expert opinion |

Further uterine assessment | ||||

Probability | 0.605 | β (121.0, 79.0) | Chart review | |

Cost of further uterine assessment, $^{†} | 690 | Weighted average | Chart review, OCCI, Schedule of Benefits | |

Diagnosis obtained^{§} | 78 | 6 | γ (161.0, 0.48) | Chart review |

Reordered uterine assessment | ||||

Probability of receiving reordered uterine assessment | 0.19 | β (23.0, 98.0) | Chart review | |

Cost, $^{†} | 599 | Weighted average | Chart review, OCCI, Schedule of Benefits | |

Time to diagnosis^{§} | 147 | 19 | γ (59.0, 2.0) | Chart review |

Surgical treatment | ||||

Probability (p)^{1}^{*} | .522 | β (12.0, 11.0) | Chart review | |

Probability (p)^{2}^{*} | 0.408 | β (40.0, 58.0) | Chart review | |

Probability (p)^{3}^{*} | 0.443 | β (35.0, 44.0) | Chart review | |

Hospital costs, $^{†} | 3514 | Weighted average | Chart review, OCCI | |

Surgeon, assistant and anesthesiologist costs, $^{†} | 1038 | Weighted average | Chart review, Schedule of Benefits | |

Time to treatment (t)^{1}^{§} | 151 | 30 | γ (25.0, 6.0) | Chart review |

Time to treatment (t)^{2}^{§} | 90 | 15 | γ (38.0, 2.0) | Chart review |

Time to treatment (t)^{3}^{§} | 152 | 17 | γ (77.0, 2.0) | Chart review |

Note: OCCI = Ontario Case Costing Initiative, RR = relative risk, UATU = uterine assessment and treatment unit.

↵* Probability distributions are presented as γ (shape, scale), β (α, β), and lognormal (lower limit, upper limit);

*p*represents the respective probabilities in Figure 1.^{1–3}↵† Costs were adjusted to 2018 Canadian dollars.

↵‡ The estimated mean cost of surgical disposables in the UATU. We set the uncertainty around the value at an assumed standard error of 25% of the mean and a γ distribution.

↵§ Time is presented in days;

*t*represents the respective time in Figure 1.^{1–3}