Table 3.
ICCs and 95% CIs between eight subsets of two to nine consecutive measurements and the 10 reference measurements
| Repetition | FBSI |
FBeye |
BHSI |
BHeye |
||||
|---|---|---|---|---|---|---|---|---|
| ICC | 95% CI | ICC | 95% CI | ICC | 95% CI | ICC | 95% CI | |
| 2 | 0.92 | 0.81-0.96 | 0.88 | 0.76-0.94 | 0.99 | 0.99-0.99 | 0.91 | 0.83-0.96 |
| 3 | 0.93 | 0.89-0.98 | 0.88 | 0.76-0.94 | 0.99 | 0.99-0.99 | 0.93 | 0.85-0.96 |
| 4 | 0.95 | 0.88-0.99 | 0.89 | 0.77-0.95 | 0.99 | 0.99-0.99 | 0.92 | 0.84-0.96 |
| 5 | 0.96 | 0.91-0.98 | 0.90 | 0.80-0.95 | 0.99 | 0.99-0.99 | 0.93 | 0.86-0.97 |
| 6 | 0.96 | 0.92-0.98 | 0.92 | 0.83-0.96 | 0.99 | 0.99-1.00 | 0.98 | 0.97-0.99 |
| 7 | 0.99 | 0.99-0.99 | 0.92 | 0.83-0.96 | 1.00 | 0.99-1.00 | 0.99 | 0.99-1.00 |
| 8 | 0.99 | 0.99-1.00 | 0.97 | 0.94-0.99 | 1.00 | 1.00 | 0.99 | 0.97-0.99 |
| 9 | 1.00 | 1.00-1.00 | 0.99 | 0.99-0.99 | 1.00 | 1.00 | 1.00 | 0.99-1.00 |
ICC, intraclass correlation coefficient; CI, confidence interval; FBSI, during free-breathing, using the stability index; FBeye, during free-breathing, without using the stability index; BHSI, during breath-holding, using the stability index; BHeye, during breath-holding, without using the stability index.