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Table 3 Cost-effectiveness analysis results (base case)

From: The consequences of implementing non-invasive prenatal testing with cell-free foetal DNA for the detection of Down syndrome in the Spanish National Health Service: a cost-effectiveness analysis

Screening strategy

1st and 2nd trimester screening (current screening)

NIPT as contingent testing

NIPT as first-line testing

Effectiveness

No of women undergoing 1st and 2nd trimester screening tests

66,799

66,799

1336

No of women undergoing NIPT

0

3152

66,799

No of NIPT with a positive result

0

251

280

No of ITa

3275

579

700

No of procedure-related miscarriages

23

4

5

No of T21 cases detected

271

269

296

Costs

1st and 2nd trimester screening tests

€5,292,716

€5,292,716

€101,536

NIPT

€0

€1,802,350

€40,114,800

IT

€3,093,565

€546,923

€661,220

Hospitalisation due to amniotic fluid leakage and pregnancy termination owing to T21

€515,591

€469,362

€518,389

Total costs

€8,901,872

€8,111,351

€41,395,745

Economic analysis

NIPT as first-line testing vs 1st and 2nd trimester screening

NIPT as contingent testing vs 1st and 2nd trimester screening

NIPT as first-line testing vs NIPT as contingent testing

Incremental cost

€32,494,073

€− 790,521

€33,284,594

Incremental effectiveness (T21 extra cases detected)

25

− 2

27

ICER (€/T21 extra case detected)

1,299,763

1,232,763

  1. ICER, incremental cost-effectiveness ratio; IT, invasive tests; NIPT, non-invasive prenatal testing; T21, trisomy 21
  2. aOut of the total number of invasive diagnostic tests performed, 271 correspond to pregnant women with a NT ≥ 3.5 mm (considered high-risk)