Table 4

Adjusted Odds ratios [OR] for covariates listed in regression model with confidence intervals [CI]

Covariate

OR

95% CI

P

BMI

normal*

1.00

overweight

1.16

1.00, 1.34

0.052

obese

1.23

1.07, 1.43

0.004

Age, per year

1.00

1.00, 1.01

0.166

Race

white*

1.00

Hispanic

0.69

0.57, 0.85

<0.001

African American

1.20

1.00, 1.45

0.053

other

0.94

0.74, 1.21

0.647

Gender

female*

1.00

male

1.13

0.99, 1.28

0.067

Family income

low*

1.00

medium

2.11

1.83, 2.42

<0.001

high

2.08

1.78, 2.43

<0.001

Years education

<12*

1.00

= 12

1.74

1.46, 2.07

<0.001

>12

2.47

2.01, 3.04

<0.001

Marital status

never married*

1.00

widowed/divorced/separated

1.15

0.94, 1.41

0.167

married

1.26

1.05, 1.51

0.014

Number of dependents, excluding spouse

none*

1.00

one

0.87

0.75, 1.01

0.070

two

0.70

0.60, 0.82

<0.001

three

0.83

0.69, 0.99

0.035

four or more

0.63

0.50, 0.81

<0.001

Smoker

no*

1.00

yes

0.88

0.77, 1.00

0.043

Metropolitan area

no*

1.00

yes

1.01

0.89, 1.16

0.833

Region of residency

northeast*

1.00

midwest

0.91

0.75, 1.10

0.314

south

1.02

0.84, 1.25

0.818

west

1.23

1.01, 1.50

0.040

Number of prescription medications

none*

1.00

1 to 2

1.14

0.97, 1.35

0.112

3 to 5

1.37

1.13, 1.66

0.001

4 to 14

1.37

1.17, 1.61

<0.001

15 or more

1.38

1.15, 1.65

<0.001

Blue collar employment classification

no*

1.00

yes

1.02

0.89, 1.17

0.814

Union membership

no*

1.00

yes

3.55

2.72, 4.63

<0.001

Employment status

part-time*

1.00

full-time

7.19

6.20, 8.33

<0.001

Number of employees at workplace

unknown*

1.00

1 to 10

0.77

0.61, 0.97

0.029

11 to 25

1.29

1.01, 1.65

0.045

26 to 100

1.91

1.49, 2.44

<0.001

101 or more

3.30

2.60, 4.18

<0.001

Spouse offered EBHI

no*

1.00

yes

0.34

0.28, 0.41

<0.001

*Reference category.

Fong and Franks BMC Health Services Research 2008 8:101   doi:10.1186/1472-6963-8-101