Table 3.
Association of composite dietary antioxidant index and aging stratified by age.
| CDAI | Model 1 | Model 2 | Model 3 | |||
|---|---|---|---|---|---|---|
| OR (95% CI) | p | OR (95% CI) | p | OR (95% CI) | p | |
| <45 years | ||||||
| Per SD | 0.83 (0.75, 0.91) | <0.001 | 0.90 (0.81, 1.00) | 0.045 | 0.89 (0.80, 0.99) | 0.040 |
| Cutoff | ||||||
| Low | Ref. | Ref. | Ref. | |||
| High | 0.67 (0.56, 0.80) | <0.001 | 0.76 (0.62, 0.92) | 0.005 | 0.73 (0.60, 0.89) | 0.002 |
| Quantiles | ||||||
| Q1 | Ref. | Ref. | Ref. | |||
| Q2 | 0.79 (0.61, 1.00) | 0.053 | 0.87 (0.66, 1.15) | 0.323 | 0.89 (0.67, 1.17) | 0.393 |
| Q3 | 0.77 (0.60, 1.00) | 0.048 | 0.89 (0.67, 1.17) | 0.385 | 0.88 (0.66, 1.16) | 0.354 |
| Q4 | 0.63 (0.47, 0.83) | 0.002 | 0.78 (0.57, 1.07) | 0.120 | 0.80 (0.58, 1.11) | 0.173 |
| Q5 | 0.54 (0.42, 0.70) | <0.001 | 0.68 (0.51, 0.91) | 0.010 | 0.65 (0.48, 0.89) | 0.007 |
| 45–59 years | ||||||
| Per SD | 0.84 (0.75, 0.94) | 0.004 | 0.89 (0.8, 1.00) | 0.046 | 0.90 (0.80, 1.00) | 0.052 |
| Cutoff | Ref. | Ref. | Ref. | |||
| Low | ||||||
| High | 0.76 (0.61, 0.94) | 0.012 | 0.84 (0.66, 1.06) | 0.144 | 0.87 (0.67, 1.12) | 0.280 |
| Quantiles | ||||||
| Q1 | Ref. | Ref. | Ref. | |||
| Q2 | 0.85 (0.61, 1.17) | 0.316 | 0.98 (0.68, 1.40) | 0.891 | 0.99 (0.68, 1.44) | 0.957 |
| Q3 | 0.70 (0.51, 0.97) | 0.033 | 0.86 (0.61, 1.22) | 0.394 | 0.92 (0.63, 1.34) | 0.645 |
| Q4 | 0.70 (0.51, 0.96) | 0.028 | 0.84 (0.60, 1.18) | 0.316 | 0.87 (0.62, 1.23) | 0.423 |
| Q5 | 0.55 (0.42, 0.73) | <0.001 | 0.68 (0.50, 0.92) | 0.013 | 0.69 (0.48, 0.98) | 0.041 |
| 60–74 years | ||||||
| Per SD | 0.79 (0.69, 0.91) | 0.001 | 0.89 (0.79, 1.01) | 0.069 | 0.91 (0.8, 1.05) | 0.192 |
| Cutoff | ||||||
| Low | Ref. | Ref. | Ref. | |||
| High | 0.66 (0.54, 0.80) | <0.001 | 0.82 (0.67, 1.00) | 0.051 | 0.84 (0.68, 1.04) | 0.104 |
| Quantiles | ||||||
| Q1 | Ref. | Ref. | Ref. | |||
| Q2 | 0.87 (0.67, 1.14) | 0.324 | 0.93 (0.69, 1.25) | 0.621 | 0.87 (0.64, 1.19) | 0.389 |
| Q3 | 0.71 (0.56, 0.90) | 0.005 | 0.83 (0.64, 1.06) | 0.137 | 0.80 (0.60, 1.07) | 0.131 |
| Q4 | 0.64 (0.48, 0.85) | 0.002 | 0.83 (0.62, 1.10) | 0.192 | 0.83 (0.62, 1.12) | 0.217 |
| Q5 | 0.47 (0.33, 0.67) | <0.001 | 0.61 (0.42, 0.89) | 0.011 | 0.64 (0.43, 0.95) | 0.029 |
| 75–84 years | ||||||
| Per SD | 0.92 (0.81, 1.05) | 0.234 | 0.94 (0.82, 1.08) | 0.367 | 0.95 (0.83, 1.10) | 0.480 |
| Cutoff | ||||||
| Low | Ref. | Ref. | Ref. | |||
| High | 0.98 (0.77, 1.24) | 0.837 | 1.02 (0.79, 1.31) | 0.877 | 1 (0.78, 1.28) | 0.999 |
| Quantiles | ||||||
| Q1 | Ref. | Ref. | Ref. | |||
| Q2 | 0.82 (0.57, 1.2) | 0.302 | 0.74 (0.51, 1.08) | 0.116 | 0.71 (0.48, 1.03) | 0.067 |
| Q3 | 0.85 (0.60, 1.19) | 0.330 | 0.8 (0.56, 1.15) | 0.218 | 0.80 (0.54, 1.16) | 0.234 |
| Q4 | 0.91 (0.65, 1.27) | 0.573 | 0.9 (0.64, 1.27) | 0.557 | 0.88 (0.63, 1.23) | 0.455 |
| Q5 | 0.84 (0.53, 1.33) | 0.453 | 0.84 (0.54, 1.32) | 0.440 | 0.85 (0.52, 1.38) | 0.495 |
Model 1 was a crude model. Model 2 was adjusted for sex, race, BMI, education level, PIR, health insurance, smoke, and alcohol. Model 3 was adjusted for model 2 and DM, CVD, hypertension, cancer history, CRP, and albumin.