Table 4.

Results of multiple linear regression modeling for factors related to nitrite/nitrate ratio (NR).

NR	Coefficient	P value	95% CI
Veilonella dispar	4.35	.010	1.35 to 7.36
Total bacterial count	−4.05	.018	−7.23 to 0.86
FMBS	8.71	.051	−0.03 to 17.44
Alcohol intake	−3.58	.075	−7.61 to 0.44
PSS-10 score	−1.19	.081	−4.15 to 0.29
Smoking habit	−9.91	.127	−23.23 to 3.41

FMBS, Full Mouth Bleeding Score; PSS-10, PSS-10, Perceived Stress Scale Questionnaire.