Table 3: PGE2 levels by risk of preterm delivery and periodontal diagnosis.

GroupPeriodontal diagnosisAverage PGE2 (pg/ml)SD

High riskChronic gingivitis (n = 9)70.8624.83
Chronic periodontitis (n = 14)85.8319.24

Low riskHealthy (n = 2)76.3116.37
Chronic gingivitis (n = 12)83.5522.42
Chronic periodontitis (n = 9)98.8325.29