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Table 3 Adjusted odds ratios (AOR) for cardiovascular disease and water and nail arsenic exposure a

From: Cardiovascular disease and arsenic exposure in Inner Mongolia, China: a case control study

 

AOR

95% CI

p-value

p-value (trend) b

N c

Continuous exposures

     

Water arsenic (10 μg/L)

1.19

1.03-1.38

0.021

NA

553

Nail arsenic (μg/g )

1.16

0.98-1.38

0.09

NA

526

Categorical exposures

     

Water arsenic (μg/L)

     

  <10

ref

  

0.06

 

  10-39

1.23

0.78-1.93

0.38

 

553

  40 and over

4.05

1.10-14.99

0.036

  

Nail arsenic (μg/g )

   

0.21

 

0.11-0.28

Ref

   

526

(<10th percentile)

0.29-1.37

0.67

0.33-1.34

0.26

  

(10th-90th percentile)

1.38-34.21

     

(>90th percentile)

     

Ref: 0.11-0.28

1.91

0.73-4.99

0.19

  

Ref : 0.11-1.37

2.48

1.18-5.20

0.0065

  
  1. aCovariates for multivariate models included diet, body mass index (BMI); occupation (unemployed, farming, industry, professional and other); education (None or some primary school; primary or some high school; completed high school); smoking (non-smoker, former smoker, or current smoker); and family history of hypertension, diabetes or heart disease. Full models are available in Additional file 1.
  2. bp-value for trend across categories.
  3. cNumbers do not add to 573 due to missing data on water arsenic (n = 13), nail arsenic (n = 40), or one more covariates.