Table 3

Multiple Logistic regression analysis of elevated B-Pb

Variable

ORs

95% CI

P value

Regular breakfast

No

Reference

Yes

0.82

0.37~1.79

0.61

Sex

Girl

Reference

Boy

1.92

1.23~3.01

0.004

Age (Years)

3

Reference

4

1.97

1.03~3.77

0.27

5

2.33

1.24~4.38

0.03

School area

Urban

Reference

Suburban

0.72

0.40~1.20

0.15

Rural

1.05

0.62~1.78

0.39

Father's education

Less than high school

Reference

High school

0.97

0.58~1.58

0.07

College & university

0.38

0.17~0.84

0.01

Mother's education

Less than high school

Reference

High school

0.85

0.50~1.45

0.92

College & university

0.76

0.31~1.91

0.66

Father's occupation

Unemployed

Reference

General labor

1.20

0.34~4.28

0.35

Technician/professional

2.28

0.61~8.55

0.09

Other

1.75

0.42~7.31

0.61

Mother's occupation

Unemployed

Reference

General labor

1.65

0.54~5.04

0.21

Technician/professional

1.29

0.38~4.42

0.94

Other

1.22

0.38~3.85

0.85

ORs: odds ratios; 95% CI: 95% confidence interval

Liu et al. Environmental Health 2011 10:28   doi:10.1186/1476-069X-10-28