Table 6.
Correlations between FFQv and FFQr (Reproducibility).
| Spearman’s Rank Correlation Coefficient | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Crude | Energy-Adjusted (Residual) 1 | Energy-Adjusted (Density) 2 | ICC for FFQ | ||||||
| r | 95%CI | r | 95%CI | r | 95%CI | ||||
| Cohort I | |||||||||
| Men (n = 101) | |||||||||
| Total sugars 3 | 0.61 | (0.48, 0.72) | 0.53 | (0.38, 0.66) | 0.63 | (0.49, 0.73) | 0.66 | ||
| Glucose | 0.65 | (0.52, 0.75) | 0.55 | (0.40, 0.68) | 0.64 | (0.51, 0.74) | 0.63 | ||
| Fructose | 0.65 | (0.52, 0.75) | 0.56 | (0.41, 0.68) | 0.60 | (0.46, 0.71) | 0.61 | ||
| Galactose | 0.73 | (0.62, 0.81) | 0.42 | (0.24, 0.57) | 0.66 | (0.53, 0.76) | 0.67 | ||
| Sucrose | 0.75 | (0.65, 0.82) | 0.70 | (0.59, 0.79) | 0.76 | (0.67, 0.83) | 0.75 | ||
| Maltose | 0.58 | (0.43, 0.69) | 0.68 | (0.56, 0.77) | 0.68 | (0.56, 0.78) | 0.50 | ||
| Lactose | 0.63 | (0.50, 0.74) | 0.51 | (0.35, 0.64) | 0.53 | (0.37, 0.65) | 0.50 | ||
| Starch | 0.69 | (0.57, 0.78) | 0.62 | (0.49, 0.73) | 0.51 | (0.35, 0.64) | 0.46 | ||
| Energy | 0.47 | (0.30, 0.61) | |||||||
| Protein | 0.56 | (0.40, 0.68) | 0.47 | (0.30, 0.61) | 0.56 | (0.41, 0.68) | 0.60 | ||
| Fat | 0.51 | (0.35, 0.64) | 0.60 | (0.46, 0.72) | 0.59 | (0.44, 0.70) | 0.59 | ||
| Carbohydrate | 0.66 | (0.53, 0.76) | 0.65 | (0.52, 0.75) | 0.60 | (0.46, 0.71) | 0.54 | ||
| Women (n = 108) | |||||||||
| Total sugars 3 | 0.65 | (0.52, 0.75) | 0.57 | (0.43, 0.69) | 0.55 | (0.41, 0.67) | 0.62 | ||
| Glucose | 0.69 | (0.57, 0.78) | 0.55 | (0.41, 0.67) | 0.61 | (0.48, 0.72) | 0.63 | ||
| Fructose | 0.65 | (0.53, 0.75) | 0.55 | (0.40, 0.67) | 0.60 | (0.47, 0.71) | 0.63 | ||
| Galactose | 0.59 | (0.45, 0.70) | 0.51 | (0.36, 0.64) | 0.52 | (0.37, 0.64) | 0.54 | ||
| Sucrose | 0.67 | (0.55, 0.76) | 0.61 | (0.48, 0.72) | 0.61 | (0.48, 0.72) | 0.59 | ||
| Maltose | 0.69 | (0.57, 0.77) | 0.64 | (0.51, 0.74) | 0.67 | (0.54, 0.76) | 0.68 | ||
| Lactose | 0.74 | (0.64, 0.82) | 0.74 | (0.64, 0.82) | 0.75 | (0.65, 0.82) | 0.71 | ||
| Starch | 0.71 | (0.60, 0.79) | 0.56 | (0.42, 0.68) | 0.60 | (0.46, 0.71) | 0.56 | ||
| Energy | 0.69 | (0.58, 0.78) | |||||||
| Protein | 0.68 | (0.56, 0.77) | 0.42 | (0.25, 0.56) | 0.49 | (0.33, 0.62) | 0.47 | ||
| Fat | 0.67 | (0.55, 0.76) | 0.58 | (0.44, 0.69) | 0.59 | (0.46, 0.70) | 0.59 | ||
| Carbohydrate | 0.72 | (0.62, 0.80) | 0.55 | (0.40, 0.67) | 0.58 | (0.44, 0.69) | 0.57 | ||
| Cohort II | |||||||||
| Men (n = 143) | |||||||||
| Total sugars 3 | 0.63 | (0.52, 0.72) | 0.65 | (0.55, 0.74) | 0.66 | (0.55, 0.74) | 0.64 | ||
| Glucose | 0.71 | (0.62, 0.78) | 0.63 | (0.52, 0.72) | 0.66 | (0.55, 0.74) | 0.63 | ||
| Fructose | 0.64 | (0.53, 0.73) | 0.61 | (0.50, 0.71) | 0.62 | (0.51, 0.71) | 0.63 | ||
| Galactose | 0.72 | (0.63, 0.79) | 0.68 | (0.57, 0.76) | 0.69 | (0.60, 0.77) | 0.76 | ||
| Sucrose | 0.68 | (0.58, 0.76) | 0.67 | (0.57, 0.75) | 0.68 | (0.57, 0.76) | 0.67 | ||
| Maltose | 0.63 | (0.51, 0.72) | 0.67 | (0.57, 0.75) | 0.68 | (0.58, 0.76) | 0.78 | ||
| Lactose | 0.68 | (0.58, 0.76) | 0.69 | (0.60, 0.77) | 0.70 | (0.60, 0.77) | 0.64 | ||
| Starch | 0.69 | (0.59, 0.77) | 0.64 | (0.54, 0.73) | 0.62 | (0.51, 0.71) | 0.64 | ||
| Energy | 0.59 | (0.47, 0.69) | |||||||
| Protein | 0.60 | (0.49, 0.70) | 0.61 | (0.50, 0.70) | 0.60 | (0.49, 0.70) | 0.68 | ||
| Fat | 0.56 | (0.44, 0.66) | 0.63 | (0.52, 0.72) | 0.61 | (0.50, 0.70) | 0.64 | ||
| Carbohydrate | 0.64 | (0.53, 0.73) | 0.69 | (0.59, 0.77) | 0.66 | (0.56, 0.75) | 0.70 | ||
| Women (n = 146) | |||||||||
| Total sugars 3 | 0.64 | (0.53, 0.73) | 0.59 | (0.47, 0.68) | 0.63 | (0.52, 0.72) | 0.48 | ||
| Glucose | 0.60 | (0.49, 0.70) | 0.41 | (0.26, 0.54) | 0.45 | (0.32, 0.57) | 0.45 | ||
| Fructose | 0.58 | (0.46, 0.67) | 0.36 | (0.21, 0.50) | 0.45 | (0.31, 0.57) | 0.45 | ||
| Galactose | 0.65 | (0.55, 0.74) | 0.61 | (0.50, 0.71) | 0.65 | (0.55, 0.74) | 0.55 | ||
| Sucrose | 0.63 | (0.52, 0.72) | 0.53 | (0.41, 0.64) | 0.57 | (0.45, 0.67) | 0.55 | ||
| Maltose | 0.69 | (0.60, 0.77) | 0.71 | (0.62, 0.78) | 0.69 | (0.59, 0.76) | 0.65 | ||
| Lactose | 0.76 | (0.68, 0.82) | 0.79 | (0.72, 0.84) | 0.79 | (0.72, 0.85) | 0.73 | ||
| Starch | 0.53 | (0.40, 0.64) | 0.51 | (0.38, 0.62) | 0.58 | (0.46, 0.68) | 0.56 | ||
| Energy | 0.60 | (0.48, 0.69) | |||||||
| Protein | 0.65 | (0.54, 0.73) | 0.52 | (0.39, 0.63) | 0.59 | (0.47, 0.69) | 0.54 | ||
| Fat | 0.60 | (0.48, 0.69) | 0.51 | (0.38, 0.62) | 0.50 | (0.36, 0.61) | 0.37 | ||
| Carbohydrate | 0.58 | (0.46, 0.68) | 0.50 | (0.37, 0.61) | 0.50 | (0.37, 0.62) | 0.48 | ||
DR, dietary record; FFQv, food frequency questionnaire for validity; r, correlation coefficient; CI, confidence interval; ICC, intra-class correlation coefficient. 1 Sugar and other nutrients intakes were adjusted for energy intake by residual model. 2 Sugar and other nutrients intakes were energy-adjusted using the density method (percentage of energy). 3 “Total sugars” represents the sum of the crude consumption of the following saccharides: glucose, fructose, galactose, sucrose, maltose, and lactose.