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Table 2 Association between blood lead concentration and dental caries in deciduous and permanent teeth

From: Association between Low blood lead levels and increased risk of dental caries in children: a cross-sectional study

  

Crude model

Adjusted modela

For Blood lead level (ug/dL)

N(≥1)

Prevalence Ratio

95% CI

Prevalence Ratio

95% CI

Model fit (p-value)*

Deciduous teeth

 ds

520

1.15

0.96–1.36

1.16

0.91–1.49

22.86 (0.0018)

 fs

903

1.08

0.98–1.20

1.11

0.98–1.25

25.70 (0.0006)

 dfs

1,014

1.09

1.00–1.19

1.14

1.02–1.27

35.09 (<.0001)

Permanent teeth

 DS

255

0.77

0.62–0.97

0.69

0.45–1.07

9.87 (0.1960)

 FS

523

0.89

0.81–0.99

0.87

0.73–1.04

16.25 (0.0229)

 DMFS

698

0.86

0.78–0.95

0.83

0.69–0.99

14.56 (0.0421)

  1. Prevalence ratio and 95% Confidence Intervals (CI) estimated using zero inflated negative binomial (ZINB) model
  2. ds decayed surfaces for deciduous tooth, fs filled surfaces because of caries for deciduous tooth, dfs the sum of decayed and filled surfaces for deciduous tooth. DS decayed surfaces for permanent tooth, FS filled surfaces because of caries for permanent tooth, DMFS the sum of decayed, filled surfaces and missing because of caries for permanent tooth
  3. *Chi-square difference values for likelihood ratio test
  4. aZINB model adjusted for gender, age (categorical), household income (categorical), and urinary cotinine level (categorical)
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BMC Oral Health

ISSN: 1472-6831

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