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Table 3 Test-retest reliability and within-group reliability intra class correlation coefficients (ICCs) for the VAS and TTO and Cohen's kappa (κ) for the DCE by respondent group and valuation method.

From: Obstetrical outcome valuations by patients, professionals, and laypersons: differences within and between groups using three valuation methods

 

Patients

Professionals

Laypersons

Overall

Range

Test-retest reliability

     

VAS

0.73

0.61

0.62

0.69

0.11

TTO

0.74

0.24

0.51

0.46

0.50

DCE

0.18

0.15

0.37

0.25

0.22

Within-group reliability

     

VAS

0.70

0.70

0.73

0.66

0.03

TTO

0.20

0.60

0.33

0.25

0.40

DCE

0.60

0.56

0.76

0.62

0.20

  1. VAS = visual analogue scale; TTO = time trade-off; DCE = discrete choice experiment.