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Table 7 Multiple regression analysis of the association between salivary B. dentium and other parameters

From: Increase in Bifidobacterium is a characteristic of the difference in the salivary microbiota of pregnant and non-pregnant women

Model Unstandardized coefficient Standardized coefficient t p 95% Cl Adjusted R2
(β) Standard error (β) Low High
All subjects
(Constant) 2.178 0.178   12.236 0.000 1.822 2.534 0.198
Progesterone 0.000 0.000 0.445 3.916 0.000 0.000 0.001  
Pregnant women
(Constant) 2.243 0.338   6.638 0.000 1.555 2.931 0.159
Progesterone 0.000 0.000 0.429 2.686 0.011 0.000 0.001  
  1. The dependent variable was B. dentium abundance. Independent variables were age, height, weight, mean PPD, %PPD ≥ 4 mm, %BOP, mean GI, DMF, smoking, estradiol, progesterone, P. gingivalis abundance, P. intermedia abundance, and A. actinomycetemcomitans abundance. CI confidence interval