Table 1 Attributes and levels

Price payable by women / test

Cost of the test borne by the HBV-infected pregnant woman

1-US$ 1

2-US$ 5

3-US$ 15

4-US$ 20

Time-to-result

Time to process the test and provide results

1–20 min

2–60 min

Diagnostic sensitivity

Probability of the RDT to give a positive result if woman has high viral load (≥ 200,000 IU/mL). To ease interpretation, this attribute was presented as the percentage of under-diagnosed women

1–85% (15% of women under-treated)

2–90% (10% of women under-treated)

3–95% (5% of women under-treated)

4–100% (0% of women under-treated)

Diagnostic specificity

Probability of the RDT to give a negative result if woman has low viral load (< 200,000 IU/mL). To ease interpretation, this attribute was presented as the percentage of over-diagnosed women

1–90% (10% of women over-treated)

2–95% (5% of women over-treated)

3–100% (0% of women over-treated)