Table 4

Spearman’s rank correlation coefficients and significance levels between utility values and VFQ-25 scores
VFQ-25 scores EQ-5D SF-6D TTO
r P-value r P-value r P-value
General health 0.56 <0.001 0.49 <0.001 0.12 0.226
General vision 0.27 0.002 0.24 0.004 0.45 <0.001
Ocular pain 0.42 <0.001 0.28 0.001 0.24 0.014
Near-vision activities 0.37 <0.001 0.42 <0.001 0.6 <0.001
Distance-vision activities 0.31 <0.001 0.41 <0.001 0.56 <0.001
Social functioning 0.24 0.007 0.36 <0.001 0.50 <0.001
Mental health 0.37 <0.001 0.44 <0.001 0.57 <0.001
Role difficulties 0.36 <0.001 0.48 <0.001 0.55 <0.001
Dependency 0.41 <0.001 0.48 <0.001 0.57 <0.001
Driving 0.24 0.018 0.21 0.057 0.46 <0.001
Colour perception 0.22 0.015 0.36 <0.001 0.45 <0.001
Peripheral vision 0.26 0.004 0.38 <0.001 0.45 <0.001
Composite score 0.38 <0.001 0.43 <0.001 0.60 <0.001

EQ-5D = UVs derived using EuroQoL Index tool.

SF-6D = UVs derived from SF-36 using SF-6D algorithm [53].

TTO = time trade-off utility value.

VFQ-25 = 25-item national eye institute visual function questionnaire.

Bozzani et al.

Bozzani et al. BMC Ophthalmology 2012 12:43   doi:10.1186/1471-2415-12-43

Open Data