The Influence of Cigarette Smoking on Gingival Bleeding and Serum Concentrations of Haptoglobin and Alpha 1-Antitrypsin

Table 3

Regression analysis of BOP and factors significant at the univariate level; only duration of smoking is significantly related to BOP at regression analysis.

Model	Beta	𝑃 value	95% CI	S/NS
Constant	—	0.552	−15.147, 28.175
Number of cigarettes per day	0.104	0.361	−0.312, 0.848	NS
Duration of smoking in years	0.352	0.004	−0.200, 0.99799	S
Alpha 1-antitrypsin mg/dL	0.055	0.575	−0.113, 0.202	NS