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Table 4 Deterministic sensitivity analyses

From: Cost-effectiveness of diagnostic tests for threatened preterm labor in singleton pregnancy in France

 

Cost per mother–child, €

Neonatal serious adverse events

ICERa, €

Minimum values of sensitivity and maximum values of specificity

S7: CL < 15 mm or CL [16–30 mm] and qualitative fFN

3040

0.0219

–

S2: Qualitative fFN

4359

0.0258

338,205

S5: CL < 18 mm, plasma RANTES and plasma IL-10

4382

0.0260

327,317

Sref: CL < 25 mm

4388

0.0261

320,952

S4: Cervical IL6

4465

0.0269

285,000

S3: Quantitative fFN

4492

0.0269

290,400

S6: CL < 15 mm

4592

0.0264

344,889

Maximum values of sensitivity and minimum values of specificity

S7: CL < 15 mm or CL [16–30 mm] and qualitative fFN

3300

0.0236

–

S2: Qualitative fFN

4381

0.0260

450,417

S5: CL < 18 mm, plasma RANTES and plasma IL-10

4414

0.0264

397,857

Sref: CL < 25 mm

4427

0.0265

388,621

S4: Cervical IL-6

4465

0.0269

353,030

S3: Quantitative fFN

4473

0.0270

345,000

S6: CL < 15 mm

4653

0.0268

422,813

Incidence of preterm birth of 5%

S7: CL < 15 mm or CL [16–30 mm] and qualitative fFN

1927

0.0119

–

S3: Quantitative fFN

3517

0.0168

324,490

Sref: CL < 25 mm

3560

0.0172

308,113

S4: Cervical IL-6

3560

0.0172

308,113

S2: Qualitative fFN

3587

0.0175

296,429

S5: CL < 18 mm, plasma RANTES and plasma IL-10

3604

0.0177

289,138

S6: CL < 15 mm

3719

0.0143

746,667

Incidence of preterm birth of 15%

S7: CL < 15 mm or CL [16–30 mm] and qualitative fFN

4121

0.0337

–

Sref: CL < 25 mm

5414

0.037

391,818

S3: Quantitative fFN

5437

0.0373

365,556

S5: CL < 18 mm, plasma RANTES and plasma IL-10

5443

0.0374

357,297

S2: Qualitative fFN

5452

0.0374

359,730

S4: Cervical IL-6

5514

0.0381

316,591

S6: CL < 15 mm

5636

0.0295

− 360,714

  1. CL cervical length, fFN fetal fibronectin, IL interleukin
  2. a Incremental cost-effectiveness ratio expressed in terms of cost per additional serious adverse event compared to S7. A positive ICERs correspond to an added cost per additional neonatal adverse event compared to S7. All strategies with a positive ICER are dominated by S7. The negative ICER corresponds to added costs to avoid one additional serious adverse event compared to S7