Mean (95% CI) adjusted* annual FEV1 decline (ml/year) according to tertiles of β-carotene in 1992 and in 2000
| Tertiles of antioxidants in 1992 | ||
|---|---|---|
| I | II+III | |
| *Multiple linear regression including sex, centre, and baseline values of FEV1, age, smoking status, BMI, and LDL cholesterol. | ||
| †p = 0.004, tertile I at both time points v the others. | ||
| ‡p = 0.02, tertiles II+III at both time points v the others. | ||
| Tertiles of antioxidants in 2000 | ||
| I | −40.0 (−46.4 to −33.7)†n = 95 | −29.0 (−36.6 to −21.5)n = 66 |
| II+III | −31.5 (−39.0 to −23.9)n = 69 | −26.7 (−30.8 to −22.6)‡n = 286 |