Table 3 Summary of daily iodine intake, iodine excretion, and iodine retention for the subjects (mean ± SD)

 Total iodine intake, μg/d

22.7±3.6

35.1±3.7^a

52.2±3.8^ab

<0.001

 Urine iodine, μg/d

56.4±13.2

51.4±11.5 ^a

78.9±15.4 ^ab

<0.001

 Feces iodine, μg/d

9.1±4.0

11.9±3.4

16.7±5.8^a

<0.001

 Total iodine excretion, μg/d

64.7±13.9

62.3±12.6

94.3±14.5^ab

<0.001

 Iodine balance, μg/d

-35.2±19.5

-21.0±19.8^a

-33.5±26.9^b

<0.001

 Total iodine intake, μg/d

16.6±3.1

29.7±2.7 ^a

48.0±2.7 ^ab

<0.001

 Urine iodine, μg/d

40.8±9.5

47.8±8.1^a

66.4±11.0^ab

<0.001

 Feces iodine, μg/d

6.2±1.6

8.0±3.1

9.7±6.5^a

0.044

 Total iodine excretion, μg/d

47.0±9.9

55.5±8.1^a

75.7±12.4^ab

<0.001

 Iodine balance, μg/d

-30.5±9.3

-25.9±7.3

-27.6±12.1

0.262

 Total iodine intake, μg/d

18.9±4.4

31.7±4.1 ^a

49.6±3.7 ^ab

<0.001

 Urine iodine, μg/d

46.7±13.3

49.2±9.6

71.1±14.0^ab

<0.001

 Feces iodine, μg/d

7.3±3.1

9.5±3.7^a

12.3±7.1^a

<0.001

 Total iodine excretion, μg/d

53.7±14.3

58.1±10.4 ^a

82.7±15.9 ^ab

<0.001

 Iodine balance, μg/d

-32.3±14.0

-24.1±13.4^a

-29.8±18.9

0.003