Table 4.
The dietary inflammatory index (DII) and lung function parameters, NHANES 2007–2012.
| Lung Function Measures | β | 95% CI | p-Value |
|---|---|---|---|
| All participants | N (missing) = 3440 (522) | ||
| FEV1, L | −0.40 | (−0.48, −0.32) **** | <0.0001 |
| FEV1, % predicted | −4.42 | (−6.08, −2.76) **** | <0.0001 |
| FVC, L | −0.55 | (−0.65, −0.45) **** | <0.0001 |
| FVC, % predicted | −8.86 | (−11.14, −6.58) **** | <0.0001 |
| FEV1/FVC | 0.01 | (0.00, 0.02) ** | 0.0086 |
| Participants with Early COPD | N (missing) = 180 (20) | ||
| FEV1, L | −0.43 | (−0.74, −0.12) ** | 0.0072 |
| FEV1, % predicted | −5.22 | (−11.46, 1.03) | 0.1009 |
| FVC, L | −0.58 | (−1.01, −0.16) ** | 0.0074 |
| FVC, % predicted | −7.83 | (−16.77, 1.12) | 0.0858 |
| FEV1/FVC | −0.003 | (−0.011, 0.005) | 0.4573 |
| Participants without Early COPD | N (missing) = 3260 (502) | ||
| FEV1, L | −0.39 | (−0.47, −0.31) **** | <0.0001 |
| FEV1, % predicted | −4.15 | (−5.85, −2.45) **** | <0.0001 |
| FVC, L | −0.56 | (−0.66, −0.45) **** | <0.0001 |
| FVC, % predicted | −9.05 | (−11.41, −6.7) **** | <0.0001 |
| FEV1/FVC | 0.01 | (0.01, 0.02) *** | 0.0002 |
Notes: Data presented as β (95% CI), p-Value. All models adjusting for age; sex; PIR; health insurance coverage; sedentary activity; smoking exposure (pack-years); mineral dusts; exhaust fumes; wheezing; asthma (in all participants). p-Value: ** p < 0.01, *** p < 0.001, **** p < 0.0001.