Table 2.
Results of statistical analysis on repeatability
| EcoScreen | ||||||
|---|---|---|---|---|---|---|
| Volume | pH | LTB4 | NOx | 8-iso PGF2α | PGE2 | |
| bias % | 3.5 | 0.2 | +) | 48.9 | 2.1 | +) |
| CV % | 7.7 | 0.9 | 166.3 | 21.4 | ||
| r2 | 0.479 | 0.889 | n.c. | 0.816 | ||
| p | 0.027 | < 0.0001 | n.c. | 0.002 | ||
| ICC | 0.692 | 0.943 | n.c. | 0.903 | ||
| ECoScreen2 | ||||||
| Volume | pH | LTB4 | NOx | 8-iso PGF2α | PGE2 | |
| bias % | 0.5 | 0.7 | 9.0 | +) | 3.2 | 11.9 |
| CV % | 8.0 | 1.0 | 18.6 | 11.5 | 34.4 | |
| r2 | 0.618 | 0.915 | 0.656 | 0.626 | 0.704 | |
| p | 0.021 | 0.0002 | 0.015 | 0.017 | 0.018 | |
| ICC | 0.786 | 0.957 | 0.810 | 0.791 | 0.839 | |
Repeated measurements of volume, pH and the mediators in EBC obtained with either the ECoScreen or ECoScreen2 device within 30 minutes. Values of the mean differences of sampling period 1 and 2 (bias), CVs and correlations. CV, coefficient of variation; ICC, intraclass correlation coefficient; n.c., not calculated. +)mediator concentration < LOQ.