Table 3 Cost parameter table (yuan).

From: Clinical strategy study on prenatal screening and diagnostic model for Down syndrome

Screening methods

Point estimate

Lower limit of interval

Upper limit of interval

Confirmation method

Notes

Biochemical screening in the first trimester

150

120

180

± 20%

 

Combined first- trimester screening

305

244

366

± 20%

 

Double screening in the second trimester

150

120

180

± 20%

 

Triple screening in the second trimester

225

180

270

± 20%

 

NIPS

2400

1920

2880

± 20%

 

Genetic counseling

20

19

22

RWD

In strategy 1–4, the serological screening results indicate high risk or intermediate risk that requires genetic counseling;

In strategy 5, NIPS results indicate high risk suggest genetic counseling

Induced labour

6000

5000

7000

RWD

(1) Diagnosis of DS and termination of pregnancy; (2) Diagnose other chromosomal abnormalities; (3) Induced abortion with other abnormalities (such as ultrasound abnormalities)

Amniotic fluid chromosomal examination

3224

2486

5024

RWD

All individuals undergoing amniotic fluid chromosomal examination

  1. RWD: Real World Data, sourced from West China Second University Hospital, Sichuan University.