Table 3 Mean of TSH hormone according to different study variables, YGA (Yazd Greater Area), 2017.

From: Impact of Drinking Water Fluoride on Human Thyroid Hormones: A Case- Control Study

Characteristics

Case group

Control group

N (%)

Mean ± SD

CI (95%)

P Value

N (%)

Mean ± SD

CI (95%)

P Value

Gender

Male

38 (19.2)

19.32 ± 12.2

13–25.5

0.715a

88 (41.3)

2.5 ± 0.92

2.3–2.6

0.12a

Female

160 (80.8)

17.3 ± 11.82

14.3–20.2

125 (58.7)

2.6 ± 0.93

2.5–2.8

Marital statues

Married

165 (83.3)

18.62 ± 11.3

15.8–21.4

0.094a

175 (82.2)

2.53 ± 0.92

2.4–2.7

0.24a

Single

22 (11.1)

17.97 ± 14.8

6.7–29.3

29 (13.6)

2.65 ± 1

2.3–3

Divorced

2 (1)

8.7 ± 9.71

5.4–20.8

2 (0.4)

3.15 ± 1.5

2.3–3.4

Widow

9 (4.5)

9 ± 10.11

6.2–21.2

7 (3.3)

3.1 ± 0.4

2.7–3.4

Education

Primary

12 (6.1)

11.62 ± 5.4

4.5–20

0.452a

28 (13.1)

2.5 ± 0.8

2.18–2.81

0.442a

Elementary

82 (41.4)

20.2 ± 12.2

15.8–24.6

55 (25.8)

2.42 ± 0.86

2.2–2.7

Diploma

58 (29.3)

14.8 ± 13.48

8.5–21

102 (47.9)

2.6 ± 0.92

2.45–2.8

Graduate Diploma

15 (7.6)

15.9 ± 3.9

12.8–18.9

16 (7.5)

2.7 ± 1.2

2–3.5

B.Sc.

27 (13.6)

19 ± 13

10.5–27.8

12 (5.6)

2.7 ± 1.23

1.95–3.5

M.Sc. and higher

4 (2)

18.8 ± 12.7

11–26.9

—

—

—

Occupation

Self-employment

17 (8.6)

14.7 ± 2.4

8.6–20.7

0.894a

46 (21.6)

2.4 ± 0.95

2.1–2.7

0.445a

Housewife

131 (66.2)

17.2 ± 12.4

13.7–20.7

110 (51.6)

2.6 ± 0.89

2.5–2.8

University student

11 (5.6)

16 ± 4.9

9.9–22.1

8 (3.8)

2.8 ± 0.93

2–3.6

Employee

23 (11.6)

20.8 ± 14.2

13.3–28.4

22 (10.3)

2.7 ± 1.14

2.1–3.2

Unemployed

16 (8.1)

16.4 ± 1.9

14–18.7

27 (12.7)

2.46 ± 0.89

2.1–2.8

Age (year)

20–25

19 (9.6)

18.74 ± 11.1

10–27.2

0.465a

21 (9.9)

2.6 ± 0.96

2.2–3

0.253a

26–35

50 (25.3)

21.3 ± 13.3

15.5–27

56 (26.3)

2.7 ± 1

2.4–3

36–45

53 (26.8)

17.6 ± 14.7

10.3–24.9

54 (25.4)

2.4 ± 0.77

2.2–2.62

46–60

76 (38.4)

14.7 ± 8.1

11.7–17.8

82 (38.5)

2.6 ± 0.9

2.4–2.8

BMI

<18.5

12 (6.1)

21.7 ± 12.5

8.5–34.7

0.57a

10 (4.7)

2.8 ± 1.1

1.9–3.6

0.68a

18.5–24.9

52 (26.3)

16.7 ± 8.2

12.6–20.7

62 (29.1)

2.5 ± 0.88

2.3–2.7

25–29.9

77 (38.9)

18.3 ± 13

13.5–23.1

91 (42.7)

2.6 ± 0.98

2.4–2.8

30–39.9

53 (26.8)

16.7 ± 12.7

11.45–21.9

49 (23)

2.5 ± 0.86

2.3–2.8

>40

4 (2)

18.9 ± 12.7

13–22.9

1 (0.5)

—

—

Fluoride Level

0–0.29 mg/L

59 (29.8)

11.85 ± 7

8.9–14.8

0.003a

65 (30.5)

2.2 ± 0.95

1.9–2.4

0.001a

0.3–0.5 mg/L

139 (70.2)

20.4 ± 12.65

16.9–23.8

148 (69.5)

2.75 ± 0.88

2.6–2.9

  1. aKruskal-Wallis test.
Back to article page