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Cross-tabulation between NOx categorized into <75th percentile, 75th to 90th percentile, and ≥90th percentile (μg/m3).
| NOx in average over followup | ||||
|---|---|---|---|---|
| <11.4 | 11.4–16.14 | ≥16.15 |
||
| NOx at inclusion |
<9.7 | 17,870 | 929 | 440 |
| 9.7–15.0 |
548 | 2,894 | 356 | |
| ≥15.1 | 186 | 430 | 1,947 | |
The kappa-value was 0.73, and the weighted kappa-value was 0.76.
