Skip to main content

Table 4 Incremental costs ($, 2017 prices) and outcomes (diagnostic rate), and incremental cost-effectiveness ratios for the proposed algorithm versus the current algorithm

From: Cost-effectiveness analysis of chromosomal microarray as a primary test for prenatal diagnosis in Hong Kong

 

Proposed algorithm (n = 130)

Current algorithm (n = 130)

Difference

Primary analysis: assuming 100% of the patients are willing to pay for out-of-pocket aCGH

Outcome:

 Number of diagnosis

39

39

0

 Diagnostic rate (%)

30.0

30.0

0.0 (−12.3 to 10.2)

Total healthcare costs ($)

 Total costs

412,100

639,600

− 227,500

 Total cost per sample

3170

4920

− 1750 (95% CI: − 2395 to − 1098)

 Total cost per diagnosis ($/dx)

10,567

16,400

−5833

Total societal costs ($)

 Total costs

911,900

1,139,400

−227,500

 Total cost per sample

7015

8765

−1750 (95% CI: −2545 to −817)

 Total cost per diagnosis ($/dx)

23,382

29,215

−5833

Healthcare system perspective: Cost per one additional diagnosis (ICER)

  

Proposed algorithm dominates

Societal perspective: Cost per one additional diagnosis (ICER)

  

Proposed algorithm dominates

Secondary analysis: only 41.8% of the patients are willing to pay for out-of-pocket aCGH

Outcome:

 Number of diagnosis

32

30

0

 Diagnostic rate (%)

24.6

23.1

1.5 (−10.4 to 11.7)

Total healthcare costs ($)

 Total costs

309,665

510,465

−200,800

 Total cost per sample

2382

3927

−1545 (95% CI:-2030 to −1095)

 Total cost per diagnosis ($/dx)

9677

18,231

−7339

Total societal costs ($)

 Total costs

515,465

716,265

−200,800

 Total cost per sample

3965

5510

−1545 (95% CI: −2407 to −706)

 Total cost per diagnosis ($/dx)

16,108

23,876

−7768

Healthcare system perspective: Cost per one additional diagnosis (ICER)

  

Proposed algorithm dominates

Societal perspective: Cost per one additional diagnosis (ICER)

  

Proposed algorithm dominates

  1. aCGH array comparative genome hybridization, CI confidence interval, dx diagnosis, ICER incremental cost-effectiveness ratio