07.06.2013 Views

Docetaxel with prednisone or prednisolone for the treatment of ...

Docetaxel with prednisone or prednisolone for the treatment of ...

Docetaxel with prednisone or prednisolone for the treatment of ...

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

172<br />

Appendix 10<br />

TABLE 57 Mean standard gamble utilities f<strong>or</strong> health states<br />

Health state Mean SD Median Range N<br />

Cancer <strong>with</strong> 20% chance <strong>of</strong> spread 0.84 0.19 0.89 0.09–1.0 88<br />

Cancer <strong>with</strong> 40% chance <strong>of</strong> spread 0.81 0.18 0.81 0.01–1.0 49<br />

Cancer <strong>with</strong> 75% chance <strong>of</strong> spread 0.71 0.24 0.79 0.01–1.0 53<br />

Spread asymptomatic 0.67 0.24 0.70 0.01–1.0 46<br />

Metastatic cancer 0.25 0.11 0.11 0–0.9 54<br />

health state was <strong>the</strong>n estimated using <strong>the</strong> inverse<br />

<strong>of</strong> <strong>the</strong> accepted level <strong>of</strong> risk, transf<strong>or</strong>med to a 0–1<br />

scale.<br />

Most respondents were rep<strong>or</strong>ted to have logically<br />

<strong>or</strong>dered ratings, and <strong>the</strong> mean SG utilities are<br />

shown in Table 57.<br />

The mean SG utilities f<strong>or</strong> <strong>the</strong> different health<br />

states revealed a lower QoL associated <strong>with</strong> an<br />

increasing probability <strong>of</strong> tumour spread<br />

(0.84–0.67). The utility value estimated f<strong>or</strong> <strong>the</strong><br />

terminal health state was considerably lower than<br />

<strong>the</strong> asymptomatic states (0.25).<br />

Although data based on o<strong>the</strong>r approaches (TTO<br />

and VAS) were not rep<strong>or</strong>ted, <strong>the</strong> mean valuations<br />

provided f<strong>or</strong> most health states were described as<br />

being similar using TTO and SG and significantly<br />

lower using <strong>the</strong> VAS.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!