Intraclass correlation coefficients for the number of numbers read and the number of numbers read per breath using between day repeatability data. Those for the visual analogue (VAS) and numerical rating scales (NRS) were obtained using data from a separate study2
| Intraclass correlation coefficient | |||
|---|---|---|---|
| VAS | NRS | ||
| No. of numbers read | 0.97 | ||
| No. of numbers read per breath | 0.85 | ||
| Breathlessness score over the past 24 hours | |||
| At worst | 0.81 | 0.89 | |
| On average | 0.83 | 0.92 | |
| Amount of trouble or bother | 0.86 | 0.91 | |