Table 2 Median nutrient intake between two FFQ and average of 24-HDR among participants in Shanghai Diet and Health Study

Energy(kcal)

1566.5

1310.1–1869.6

1561.9

1280.2–1838.4

1515.2

1222.2–1819.7

0.16

0.06

Protein(g)

54.3

42.5–65.8

52.9

42.4–64.5

58.7

45.9–74.2

0.07

0.08

Fat(g)

49.8

37.2–64.7

47.9

34.9–61.9

60.9

46.6–78.8

0.13

< 0.01

Carbohydrate (g)

227.3

180.8–277.9

228.1

182.2–275.2

173.3

134.5–220.3

0.12

< 0.01

Protein(% energy)

13.7

12.0–15.4

13.6

11.9–15.4

15.6

13.3–18.1

0.21

0.05

Fat(% energy)

28.6

22.7–34.6

27.6

21.3–33.6

37.3

30.2–45.4

0.17

< 0.01

Carbohydrate (% energy)

58.5

52.6–64.4

59.5

53.2–65.9

46.8

40.1–53.9

0.10

< 0.01

Vitamin A(μg)

300.3

214.9–407.8

301.3

213.8–400.2

361.6

242.1–508

0.12

< 0.01

Carotene(μg)

936.0

640.6–1359.2

951.0

634.2–1285

1244.0

704.3–2016.8

< 0.01

< 0.01

Retinol(μg)

133.9

83.4–191.2

129.1

78.3–189.6

131.1

84.3–189

0.05

0.13

Vitamin D(IU)

12.0

4.2–23.8

6.0

2.2–13.6

0.0

0.00

< 0.01

< 0.01

Vitamin E(mg)

19.7

13.1–26.4

17.8

10.2–24.9

22.2

15.6–31.6

0.03

0.58

Vitamin K(μg)

8.1

4.3–13.7

12.5

6.4–21.5

0.0

0.00

0.01

< 0.01

Thiamine(mg)

0.6

0.5–0.8

0.6

0.5–0.8

0.7

0.5–0.9

0.12

0.06

Riboflavin(mg)

0.7

0.5–1

0.7

0.5–0.9

0.8

0.6–1

0.08

0.07

Niacin(mg)

10.5

8.3–13.1

10.8

8.7–13.3

13.1

10.1–16.8

0.24

0.21

Folate (μg)

9.9

6.1–14.9

10.7

7.2–16.8

2.8

0.1–16.2

0.14

< 0.01

Biotin(μg)

1.1

0.5–1.8

0.8

0.4–1.4

0.3

0.0–0.9

0.06

0.01

Choline(mg)

6.6

2.5–14.6

3.2

0.5–10

0.0

0.0–1.9

< 0.01

< 0.01

Vitamin C (mg)

46.9

32.1–63.7

47.4

32.2–63.8

58.0

37.8–83.2

0.19

0.06

Calcium (mg)

352.6

230.6–530

341.3

232.9–506.8

376.3

259.9–548.2

0.01

< 0.01

Phosphorus (mg)

786.8

602.5–966.4

761.4

602.6–949.7

818.8

650.7–994.3

< 0.01

< 0.01

Potassium (mg)

1386.3

1029.9–1781.1

1313.3

1001.3–1660.3

1495.2

1129.0–1924.2

< 0.01

< 0.01

Sodium (mg)

3622.8

1001.9–5115.5

2950.9

638.0–4721.8

3914.8

2809.7–5504.2

< 0.01

< 0.01

Magnesium (mg)

212.4

166.7–262.7

208.4

169.2–255.9

221.6

173.3–280.1

0.21

0.09

Iron (mg)

14.5

11.7–18.1

14.1

11.6–17.5

16.2

13.1–20.9

0.58

0.01

Zinc (mg)

8.5

6.9–10.2

8.5

7.0–10.3

8.5

6.7–10.4

0.20

0.61

Selenium(μg)

39.3

28.8–49.9

37.5

28.8–49.8

43.3

30.1–56.8

0.12

< 0.01