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Table 2 Geometric means and 95% confidence interval (CI) for protein, potassium, sodium and total sugar intake and density as assessed by myfood24, interviewer-based 24-h recall and biomarkers relating to the first clinic visit

From: Validity of an online 24-h recall tool (myfood24) for dietary assessment in population studies: comparison with biomarkers and standard interviews

 

myfood24

Interviewer-based 24-h recall

Biomarker/reference tool

n

Geometric mean (95% CI)

n

Geometric mean (95% CI)

n

Geometric mean (95% CI)

Nutrient intake:

 Protein (g)

208

70.5 (66.1, 75.2)

197

81.7 (77.3, 86.4)

192

68.4 (64.1, 72.8)

 Potassium (g)

208

2.7 (2.5, 2.9)

197

3.1 (3.0, 3.3)

192

2.1 (1.9, 2.3)

 Sodium (g)

208

2.3 (2.1, 2.5)

197

2.4 (2.2, 2.6)

192

1.8 (1.7, 2.0)

 Total sugars (g)

208

72.8 (66.4, 79.8)

197

91.0 (85.0, 97.5)

191

128.3 (115.9, 142.0)

Energy expenditure:

 Total energy expenditure (MJ)

208

7.5 (7.1, 7.9)

197

8.5 (8.1, 8.9)

185

11.0 (10.5, 11.6)

Nutrient density:a

 Protein (g/MJ)

208

9.5 (9.0, 9.9)

197

9.6 (9.2, 10.0)

180

6.2 (5.8, 6.7)

 Potassium (g/MJ)

208

0.36 (0.35, 0.38)

197

0.37 (0.35, 0.39)

180

0.19 (0.18, 0.21)

 Sodium (g/MJ)

208

0.31 (0.29, 0.33)

197

0.28 (0.27, 0.30)

180

0.16 (0.15, 0.18)

 Total sugars (g/MJ)

208

9.8 (9.1, 10.5)

197

10.7 (10.1, 11.4)

179

11.6 (10.4, 12.9)

  1. aNutrient density for protein, potassium, sodium and total sugars was expressed in g/MJ of total energy intake
  2. The n is the number of participants who had both the dietary assessment measure and the biomarker