Age (yr)

(<1)

(1 - 10)

(11 - 20)

(21 - 30)

(31 - 40)

(41 - 50)

(51 - 60)

(61 - 70)

(71 - 80)

(81 - 100)

TSH (mIU/L)

Mean

2.56

2.56

2.11

2.22

2.28

2.03

2.12

2.15

1.88

1.88

SD

0.88

1.17

0.91

0.97

0.91

0.90

1.05

1.30

0.92

0.74

FT4 (pmol/L)

Mean

17.78

15.91

14.81

13.90

14.02

14.10

14.19

14.69

15.14

17.46

SD

4.03

3.84

3.47

2.58

2.88

2.70

3.12

3.86

2.93

3.71

FT3 (pmol/L)

Mean

6.20

5.88*

5.96

5.69

5.54

5.64

5.45

5.41

5.36

6.07

SD

0.94

1.01

0.87

0.79

0.80

0.82

0.84

0.77

0.77

0.92

N

30

50

69

135

136

100

67

45

26

7