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. Author manuscript; available in PMC: 2007 Sep 27.
Published in final edited form as: J Periodontol. 2006 May;77(5):821–825. doi: 10.1902/jop.2006.050193

Table 1.

Characteristics of Study Participants by Periodontitis Status (≥1 site with alveolar bone loss ≥3 mm)*

Periodontitis
Characteristics Yes (N = 35) No (N = 66) P Value
Age (years) 35.7 ± 3.6 35.2 ± 3.8 <0.001
Race/ethnicity (%) 1.000
 White 82.9 84.9
 Black 5.7 4.6
 Asian-American 8.6 7.6
 Hispanic 2.9 3.0
Completed college (%) 97.1 80.6 0.030
Annual household income >$70,000 (%) 85.7 76.9 0.430
Employed (%) 90.3 92.2 0.710
Pre-pregnancy BMI (kg/m2) 23.0 ± 5.1 24.3 ± 4.1 <0.001
Pre-pregnancy physical activity (hours/week) 7.5 ± 5.4 8.4 ± 5.6 <0.001
Alcohol consumption (g/day) 2.3 ± 4.1 2.3 ± 2.7 <0.010
Gestational age at blood collection (weeks) 9.1 ± 1.5 9.8 ± 1.5 <0.001
Mean alveolar bone loss (mm) 1.48 ± 0.50 0.75 ± 0.34 <0.001
CRP level (mg/l) 0.680
 Median 2.23 1.46
 Interquartile range 0.74 to 4.14 0.71 to 3.58
*

Data presented as mean ± SD unless indicated otherwise.

Actual number varies somewhat due to missing data.