Cross sectional analysis: difference in forced expiratory volume in one second (FEV1) in ml associated with a one standard deviation increase in nutrient intake at phase I
| Adjusted for | Vitamin C (n = 2136) | Vitamin E (n = 2136) | Magnesium (n = 2136) | β-carotene (n = 2035) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Difference | 95% CI | Difference | 95% CI | Difference | 95% CI | Difference | 95% CI | |||||||
| (1) Age, height, age2, height2 | 67.8*** | 39.6 to 96.1 | 37.9** | 9.3 to 66.6 | –31.81-150 | –60.0 to –3.5 | 31.91-150 | 2.9 to 60.8 | ||||||
| (2) Model 1 + body mass index | 65.0*** | 36.8 to 93.1 | 37.01-150 | 8.4 to 65.5 | –32.41-150 | –60.5 to –4.3 | 29.51-150 | 0.6 to 58.3 | ||||||
| (3) Model 2 + smoking history | 37.3** | 9.5 to 65.1 | 23.2 | –4.5 to 50.9 | –31.51-150 | –58.8 to –4.3 | 14.3 | –13.9 to 42.4 | ||||||
| (4) Model 3 + social class | 21.1 | –6.8 to 49.0 | 19.7 | –7.8 to 47.2 | –31.11-150 | –58.2 to –4.1 | 11.2 | –16.7 to 39.1 | ||||||
| (5) Model 4 + work exercise and leisure exercise | 16.2 | –11.6 to 44.0 | 14.0 | –13.4 to 41.4 | –35.41-150 | –62.4 to –8.5 | 7.4 | –20.4 to 35.3 | ||||||
| (6) Model 5 + total energy intake | 26.2 | –2.0 to 54.4 | 39.1** | 9.4 to 68.8 | –2.7 | –41.1 to 35.6 | 14.1 | –13.9 to 42.1 | ||||||
↵1-150 p<0.05, ** p<0.01, *** p<0.001.