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Table 3 Multiple linear regression analysis of years worked at night work on BMI among women (n=2,100)

From: Years worked at night and body mass index among registered nurses from eighteen public hospitals in Rio de Janeiro, Brazil

Models

Beta

95% CI

p-value

AIC

Model 1 – Unadjusted

0.107

0.074–0.139

<0.0001

12249.2

Model 2 – Model 1 + age + years at work

0.061

0.026–0.095

0.0006

12163.8

Model 3 – Model 2 + BMI at 20 years old

0.045

0.018–0.072

0.0010

11236.0

Model 4 – Model 3 + marital status + per capita income + number of children

0.046

0.019–0.072

0.0008

11199.0

Model 5 – Model 4 + weekly hours worked

0.040

0.013–0.067

0.0040

11197.5

Model 6 – Model 5 + smoking, alcohol consumption, physical activity, and usual sleep duration

0.036

0.009–0.063

0.0087

11161.0