Table 7.
Measure at 6 months | Categorisation of self-reported respiratory health. | N | Mean | SD | t-statistic | p-value | Relative efficiency |
---|---|---|---|---|---|---|---|
EQ-5D-3 L | Q1 or Q2 | 90 | 0.69 | 0.31 | 4.14 | P < 0.001 | 1.56 |
Q3, Q4 or Q5 | 33 | 0.43 | 0.30 | ||||
SF-6D | Q1 or Q2 | 90 | 0.70 | 0.13 | 5.18 | P < 0.001 | |
Q3, Q4 or Q5 | 32 | 0.56 | 0.10 |
N is the sample size. SD denotes the standard deviation. Relative efficiency statistic is referenced at 1.0 for the EQ-5D-3 L. A relative efficiency value higher than 1.0 shows that the SF-6D is more efficient than the EQ-5D-3 L