Assessing the Association between Oral Hygiene and Preterm Birth by Quantitative Light-Induced Fluorescence
Table 1
Summary of red fluorescence and plaque coverage data of the anterior teeth ( = 10–12 per individual) with other logistic regression model parameters (figures in parentheses are standard deviations unless identified as percentages).
Variable
Case
Control
values comparing case and control
Sample size ()
51
40
Mean plaque coverage (%)
25.50 (17.45)
20.58 (14.39)
0.154†
Mean red fluorescence (%)
65.00 (16.42)
68.70 (16.61)
0.292†
Mean maternal age (years)
28.69 (5.91)
30.78 (6.41)
0.110†
≤35 ()
42 (82%)
33 (83%)
0.985‡
>35 ()
9 (18%)
7 (18%)
Smoking status
Nonsmoker ()
31 (61%)
30 (75%)
0.105‡
Stopped during pregnancy ()
5 (10%)
4 (10%)
Smoker during pregnancy ()
15 (29%)
6 (15%)
BMI before pregnancy
26.05 (5.29)
26.21 (5.32)
0.882†
Underweight (BMI < 19) ()
2 (4%)
1 (3%)
0.910‡
Normal (BMI 19–25) ()
24 (47%)
20 (50%)
Overweight (BMI > 25) ()
25 (49%)
19 (48%)
Delivery outcome*
<28 weeks (extreme) ()
2 (4%)
0
≥28–<34 weeks (moderate) ()
2 (4%)
1 (3%)
≥34–<37 weeks (mild) ()
10 (20%)
1 (3%)
≥37 weeks ()
37 (73%)
37 (95%)
-test; chi-squared test; *one delivery outcome missing from the control group.
