Table 2.

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

Characteristic	Mean P gingivalis IgG (EU) (95% CI)	p Value*
Overall	117.2 (103.6–131.1)
Age
≤72 years	117.0 (103.3–130.6)	0.62
>72 years	121.3 (102.6–139.9)
Sex
Men	127.1 (111.2–143.1)	0.03
Women	112.1 (97.8–126.3)
Race-ethnicity		W vs B	W vs M	B vs M
Non-Hispanic White (W)	105.7 (96.3–115.0)	<0.01	0.05	0.89
Non-Hispanic Black (B)	220.8 (152.7–288.9)
Mexican–American (M)	212.1 (104.9–319.2)
Active health insurance
Yes	118.0 (104.6–131.5)	0.15
No	150.5 (103.4–197.6)
Education		E vs HS	E vs C	HS vs C
<12 years (E)	121.1 (101.0–141.3)	0.49	0.61	0.88
12 years (HS)	113.3 (96.7–129.9)
>12 years (C)	114.8 (97.7–131.8)
Annual income		L vs M	L vs Hi	M vs Hi
≤$14 999 (L)	138.2 (114.1–162.4)	0.01	0.01	0.56
$15 000–24 999 (M)	111.5 (93.6–129.5)
>$25 000 (Hi)	106.5 (95.1–117.8)
Smoking history		A vs F	A vs N	F vs N
Active smokers (A)	99.1 (87.7–110.5)	0.01	<0.01	0.29
Former smokers (F)	116.4 (101.1–131.7)
Non-smokers (N)	126.1 (108.1–144.1)
CAD
Yes	104.1 (91.4–116.8)	0.02
No	121.0 (106.5–135.6)
CHF
Yes	124.3 (98.9–149.7)	0.59
No	118.1 (104.8–131.4)
Prior stroke
Yes	143.0 (98.9–187.2)	0.23
No	116.7 (103.6–129.9)
Diabetes
Yes	139. 4 (101.6–177.3)	0.66
No	115.7 (103.0–128.4)
Hypertension
Yes	125.4 (108.8–142.0)	<0.01
No	99.4 (88.0–110.8)
Dentate status		EA vs E1	EA vs T	E1 vs T
Edentulous (EA)	80.7 (73.2–88.2)	0.02	<0.01	0.01
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.