Association between the systemic immune inflammation index and periodontitis: a cross-sectional study

Table 3 Weighted univariate logistic analysis of periodontitis

Characteristic	OR	95% CI	P value
Gender
Male	Reference	Reference
Female	0.511	0.471, 0.553	< 0.001
Age
30–50 years	Reference	Reference
≥ 50 years	1.927	1.776, 2.089	< 0.001
Race
Non-Hispanic White	Reference	Reference
Non-Hispanic Black	2.103	1.698, 2.604	< 0.001
Mexican American	2.419	1.899, 3.081	< 0.001
Other Hispanic	1.702	1.354, 2.140	< 0.001
Other Races	1.641	1.246, 2.161	0.001
Education level
Less than High school	Reference	Reference
High school	0.920	0.750, 1.128	0.405
Above high school	0.642	0.538, 0.766	< 0.001
PIR
Low (< 1.3)	Reference	Reference
Mid-high (≥ 1.3)	0.575	0.529, 0.626	< 0.001
Alcohol consumption
Non-drinker	Reference	Reference
1–10 drinks/month	0.858	0.709, 1.038	0.110
10–20 drinks/month	1.012	0.852, 1.200	0.881
20 + drinks/month	1.163	0.848, 1.596	0.333
Smoking status
Never smoker	Reference	Reference
Former smoker	1.372	1.160, 1.622	< 0.001
Current smoker	2.602	2.184, 3.099	< 0.001
BMI
Normal(< 25)	Reference	Reference
Overweight(25 to < 30)	0.910	0.736, 1.126	0.369
Obese(≥ 30)	1.051	0.845, 1.307	0.642
SII cutoff
< 978 × 10⁹/L	Reference	Reference
≥ 978 × 10⁹/L	1.225	1.052, 1.426	0.009
Coronary heart disease
No	Reference	Reference
Yes	1.401	1.140, 1.723	0.001
Myocardial infarction
No	Reference	Reference
Yes	1.286	1.054, 1.569	0.013
Stroke
No	Reference	Reference
Yes	1.188	0.967, 1.458	0.100
Cancer
No	Reference	Reference
Yes	1.011	0.887, 1.152	0.868
Hypertension
No	Reference	Reference
Yes	1.320	1.218, 1.431	< 0.001
Hypercholesterolemia
No	Reference	Reference
Yes	1.070	0.984, 1.164	0.114
Diabetes
No	Reference	Reference
Yes	1.487	1.329, 1.665	< 0.001

BMI: body mass index; CI: confidence interval; OR: odds ratio; PIR: Income to poverty ratio; SII: systemic immune inflammatory index

ISSN: 1479-5876