Assessing the Association between Oral Hygiene and Preterm Birth by Quantitative Light-Induced Fluorescence

Table 2

Results of multiple regression analysis controlling for the confounding effects of smoking, maternal age, and BMI.

Variable	𝛽	Std Error	Sig.	OR	95% CI for OR
					Lower	Upper
Plaque coverage (%)	−0.042	0.019	0.031*	0.959	0.923	0.996
Red fluorescence (Δ𝑅%)	0.036	0.018	0.042*	1.037	1.001	1.073
Smoking	−0.822	0.579	0.156	0.439	0.141	1.368
BMI	0.005	0.045	0.913	1.005	0.920	1.098
Maternal age	0.030	0.039	0.439	1.030	0.955	1.111

Key: 𝛽: standardised coefficients; OR: odds ratio; CI: 95% confidence intervals; *indicates statistical significance (𝑃<0.05).