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Table 3 Model parameters for probabilities and costs

From: A cost-minimisation analysis of performing point-of-care ultrasonography on patients with vaginal bleeding in early pregnancy in general practice: a decision analytical model

Parameters

Ranges

References

Probabilities

Usual practice

Referral from GP to private gynaecologist

[0.00 – 1.00]

Questionnaire

Completion at private gynaecologist

[0.92 – 1.00]

[23]

Referral from private gynaecologist to hospital

[0.00 – 0.08]

[23]

Referral from GP to hospital

[0.00 – 1.00]

Questionnaire

Intervention

Completion at GP

[0.40 – 0.98]

Questionnaire

Referral from GP

[0.02 – 0.60]

Questionnaire

Referral from GP to private gynaecologist

[0.00 – 1.00]

Questionnaire

Completion at private gynaecologist

[0.92 – 1.00]

[23]

Referral from private gynaecologist to hospital

[0.00 – 0.08]

[23]

Referral from GP to hospital

[0.00 – 1.00]

Questionnaire

Costs

General practitioner

Cost of ultrasonography scanner

[1.30 – 13.77]

[24]

Cost of consultation without ultrasonography

[19.02 – 19.25]

[39, 40]

Cost of ultrasonography training

[3.35 – 5.81]

[31, 42]

Cost of utensils

[0.34 – 0.56]

Expert opinion

Private gynaecologist

  

Cost of consultation

[96.78 – 97.99]

[27, 41]

Hospital

  

Cost of consultation

[164.26 – 164.79]

[25]

Patient-related parameters

Patients

Consultation time

General practitioner without ultrasonography

[5-15]

[24]

General practitioner with ultrasonography

[13-26]

[24]

Private gynaecologist

[13-26]

[24]

Hospital

[13-26]

[24]

Transportation distance

General practitioner

[0.2—42]

Unpublished registry data

Private gynaecologist

[0.2—100]

[37]

Hospital

[0.2 – 100]

[37]

Transportation time

  

General practitioner

[0.24 – 50.40]

Unpublished registry data

Private gynaecologist

[0.24 – 120]

[37]

Hospital

[0.24 – 120]

[37]