Table 5 The univariate and simultaneous effect of different risk factor on skeletal fluorosis.

From: Skeletal fluorosis in relation to drinking water in rural areas of West Azerbaijan, Iran

  

OR

Unadjusted*

P

OR

Adjusted**

95% CI

95% CI

P

Lower

Upper

Lower

Upper

Level

High

Ref

   

Ref

   

Low

0.12

0.08

0.18

<0.001

0.11

0.06

0.19

<0.001

AgeC

<=40

Ref

   

Ref

   

41–50

2.49

1.32

4.68

0.005

1.90

1.36

2.67

<0.001

51–60

1.54

1.15

2.05

0.004

1.60

1.03

2.49

0.037

61–70

1.83

1.53

2.18

<0.001

3.17

1.33

7.54

0.009

71+

12.90

6.25

26.64

<0.001

21.97

11.73

41.16

<0.001

Gender

F

Ref

   

Ref

   

M

0.56

0.29

1.10

0.094

0.48

0.20

1.14

0.097

Fast food

Never or One time in month

Ref

   

Ref

   

Two time in month

0.47

0.33

0.69

<0.001

0.61

0.29

1.29

0.195

two times in week

0.56

0.50

0.62

<0.001

0.79

0.56

1.11

0.176

Diary 2

<3

Ref

   

Ref

   

>=3

0.98

0.74

1.30

0.898

1.02

0.68

1.53

0.927

  1. *Based on simple (univariate) multilevel logistic regression. **Based on Multiple multilevel logistic regression.
  2. Level Vs bone disease:
  3. The rural area had low level of fluoride with odds of 0.12 (95% CI: 0.08 to 0.18, P < 0.001) times as compared to high fluoride region.
  4. Adjusted**
  5. Adjusted for other variables in the model, the rural area with low level of fluoride has odds of 0.11 (95% CI: 0.06 to 0.19, P < 0.001) times as compared to high fluoride region.
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