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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.