Table 3.

Correlation among three measures of patient preference for modality

Preference Measure CorrelationsIntraclass Correlation CoefficientaP
Moderately CorrelatedbHighly Correlatedc
SG
    with TTO0.65 (0.41 to 0.80)0.0010.70
    with WTP0.25 (−0.03 to 0.51)0.641.0
TTO
    with WTP0.16 (−0.12 to 0.43)0.841.0
  • a With 95% confidence interval.

  • b Tested against correlation threshold of 0.3.

  • c Tested against correlation threshold of 0.6.