Table 3

Convergent validity between ICECAP-O and SF-6D measures (n=114)† using Pearson’s correlation coefficient

ICECAP-O overallICECAP-O domain attachmentSecurityRoleEnjoymentControl
SF-6D overall0.65**–––––
SF-6D domain
 Physical health0.43**0.080.31*0.40**0.32*0.40**
 Role limitations0.30*0.050.21*0.28*0.140.31*
 Social functioning0.41**0.180.25*0.34*0.30*0.35*
 Pain0.56**0.170.29*0.51**0.43**0.53**
 Mental health0.39**0.19*0.35*0.30*0.27*0.27*
 Vitality0.44**0.170.21*0.41**0.28*0.42**

  • *P<0.05; **P<0.001.

  • †Observations with missing values on either SF-12 or ICECAP-O questions were removed from the analysis (n=15).

  • ICECAP-O, Investigating Choice Experiments Capability Measure-Older people; SF-6D, Short-Form six dimensions; SF-12, Short-Form 12 dimensions.