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Table 2 Multinomial logistic regression of the NHS-2006 (n = 39,069, p = 0.000) and NHS-2017 (n = 39,069, p = 0.000) for variable gum bleeding

From: Self-reported prevalence of periodontal disease among the Spanish population and immigrants: 2006, 2011/12 and 2017: a population-based study

Predictors

NHS-2006

NHS-2017

OR

95% CI

p value

OR

95% CI

p value

Nationality

Spanish

1.00

1.00

Immigrant

1.65

1.38–1.99

0.000

1.09

0.87–1.36

0.460

Age

16−24 years

1.00

1.00

25–64 years

0.95

0.87–1.02

0.169

1.04

0.95–1.14

0.389

65 or over

0.40

0.36–0.44

0.000

0.46

0.41–0.51

0.000

Sex

Men

1.00

1.00

Women

1.23

1.17–1.30

0.000

1.20

1.13–1.27

0.000

Interaction: sex * nationality

Man * Spanish

1.00

1.00

Woman * immigrant

0.81

0.69–0.94

0.006

0.99

0.85–1.17

0.943

Interaction: age * nationality

16–24 years * Spanish

1.00

1.00

25–64 years * immigrant

0.61

0.51–0.74

0.000

0.77

0.62–0.96

0.022

65 or over * Immigrant

1.10

0.69–1.74

0.693

0.49

0.29–0.82

0.000