Table 6 Incremental cost-effectiveness analysis results of Strategy 5 compared to the other four screening strategies.

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

Comparison Scheme

Incremental cost (yuan)

Incremental effect (n)

Incremental cost-effectiveness ratio (yuan per case)

Strategy1

17614598.35

13.00

1354969.10

Strategy2

19166526.42

12.52

1530872.72

Strategy3

18159361.07

13.80

1315895.73

Strategy4

18990234.63

10.53

1803441.09

  1. Strategy 1: Serum biochemical screening in the first trimester - NIPS strategy; Strategy 2: Combined first-trimester screening - NIPS strategy; Strategy 3: Double screening in the second trimester - NIPS strategy; Strategy 4: Triple screening in the second trimester - NIPS strategy; Strategy 5: NIPS strategy.
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