Table 2

Mean P gingivalis IgG level for selected population characteristics: NHANES III

CharacteristicMean P gingivalis IgG (EU) (95% CI)p Value*
Overall117.2 (103.6–131.1)
Age
    ⩽72 years117.0 (103.3–130.6)0.62
    >72 years121.3 (102.6–139.9)
Sex
    Men127.1 (111.2–143.1)0.03
    Women112.1 (97.8–126.3)
Race-ethnicityW vs BW vs MB vs M
    Non-Hispanic White (W)105.7 (96.3–115.0)<0.010.050.89
    Non-Hispanic Black (B)220.8 (152.7–288.9)
    Mexican–American (M)212.1 (104.9–319.2)
Active health insurance
    Yes118.0 (104.6–131.5)0.15
    No150.5 (103.4–197.6)
EducationE vs HSE vs CHS vs C
    <12 years (E)121.1 (101.0–141.3)0.490.610.88
    12 years (HS)113.3 (96.7–129.9)
    >12 years (C)114.8 (97.7–131.8)
Annual incomeL vs ML vs HiM vs Hi
    ⩽$14 999 (L)138.2 (114.1–162.4)0.010.010.56
    $15 000–24 999 (M)111.5 (93.6–129.5)
    >$25 000 (Hi)106.5 (95.1–117.8)
Smoking historyA vs FA vs NF vs N
    Active smokers (A)99.1 (87.7–110.5)0.01<0.010.29
    Former smokers (F)116.4 (101.1–131.7)
    Non-smokers (N)126.1 (108.1–144.1)
CAD
    Yes104.1 (91.4–116.8)0.02
    No121.0 (106.5–135.6)
CHF
    Yes124.3 (98.9–149.7)0.59
    No118.1 (104.8–131.4)
Prior stroke
    Yes143.0 (98.9–187.2)0.23
    No116.7 (103.6–129.9)
Diabetes
    Yes139. 4 (101.6–177.3)0.66
    No115.7 (103.0–128.4)
Hypertension
    Yes125.4 (108.8–142.0)<0.01
    No99.4 (88.0–110.8)
Dentate statusEA vs E1EA vs TE1 vs T
    Edentulous (EA)80.7 (73.2–88.2)0.02<0.010.01
    Edentulous in 1 arch (E1)105.9 (85.8–125.9)
    At least some natural teeth present (T)143.6 (122.3–164.8)
  • *p values derived from t test comparison of means of P gingivalis IgG by population characteristic.

  • CAD, coronary artery disease; CHF, congestive heart failure; EU, ELISA unit.