| Biomarker n = 202 | myfood24 n = 208 | Interviewer-based 24-h recall n = 197 | ||
---|---|---|---|---|---|
Geometric mean (95% CI) | Geometric mean (95% CI) | Intraclass correlation with biomarker | Geometric mean (95% CI) | Intraclass correlation with biomarker | |
Nutrient intake: | |||||
 β-carotene | 0.59 μM (0.52, 0.67) | 0.65 mg (0.51, 0.83) | 0.56 (0.52, 0.60) | 1.53 mg (1.20, 1.95) | 0.52 (0.48, 0.56) |
 Vitamin C | 60 μM (57, 64) | 59 mg (51, 69) | 0.53 (0.50, 0.57) | 75 mg (66, 85) | 0.53 (0.49, 0.56) |
 Vitamin E | 37 μM (35, 40) | 1.6 mg (1.3, 1.9) | 0.55 (0.50, 0.59) | 2.3 mg (2.0, 2.8) | 0.53 (0.49, 0.57) |