Table 3 Marginal utilities and willingness to pay (WTP) of parents of children with lived experiences of severe speech disorders.

From: The value of genomic testing in severe childhood speech disorders

 

Meana

Standard deviationb

importance score, %

Marginal WTP (AU$)c

Number of children who receive genetic diagnosis

0.02939*

0.03664*

8

49

Knowledge gained from a genomic diagnosis (some knowledge)

1.60958***

0.29275

11

2352

Knowledge gained from a genomic diagnosis (a lot of knowledge)

2.84025***

1.12270*

 

4207

Chance of improving the process of the child’s medical care now

0.05836***

0.04728***

15

93

Time between now and when your child does the test

−0.11380**

0.11380**

5

−169

Cost of testing to you

−0.00124***

0.00124***

43

 

Allowing access to educational support services

1.65854***

1.39929***

14

3094

Enabling access to relevant genetic-based family support groups

0.45026

0.6997

4

658

Constant

1.02101

1.04987d

  

Sigmae

4.89507***

   

Log likelihood

−296

   

McFadden Pseudo R-squared

0.4

   
  1. ***p < 0.01; **p < 0.05; *p < 0.1
  2. aMarginal utilities indicate the marginal effect of each attribute (or attribute level) on the utility for genomic testing. Positive (or negative) mean estimates indicate, on average, a positive (or negative) effect on utility.
  3. bStandard deviation estimates describe the heterogeneity of preferences among study participants.
  4. cMarginal WTP estimates represent the marginal rate of substitution between the corresponding attribute and the cost attribute.
  5. dConstant is specified as a fixed parameter so this value here is the standard error of the parameter estimate.
  6. eRandom parameter associated with the genomic testing alternatives.
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