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Table 4 Deterministic sensitivity analysis probabilities and cost parameters

From: Cost-effectiveness of screening tools for identifying depression in early pregnancy: a decision tree model

Probabilities

Probability

Source

Data type

95% CI

Distribution

Notes

No-screen positive

0.2500

Mitchell et al., 2009 [31]

Binomial

0.171–0.339

Beta

 

No-screen negative

0.7500

Mitchell et al., 2009 [31]

Binomial

0.661–0.829

Beta

 

No-screen positive - true positive

0.4000

Mitchell et al., 2009 [31]

Binomial

0.221–0.594

Beta

 

No-screen positive - false positive

0.6000

Mitchell et al., 2009 [31]

Binomial

0.406–0.779

Beta

 

No-screen negative - true negative

0.8667

Mitchell et al., 2009 [31]

Binomial

0.782–0.933

Beta

 

No-screen negative - false negative

0.1333

Mitchell et al., 2009 [31]

Binomial

0.067–0.218

Beta

 

Costs

Cost (ÂŁ)

Source

Data type

95% CI

Standard error

Notes

No-screen

31

Curtis & Burns, 2016 [49]

Assumed fixed

12.77–49.23

Assumed to be 30%

One GP appointment lasting 9.22 minutes, including direct care staff, no qualifications.