Table 2.

Bivariate relationships with periodontitis, NHANES 2009–2012.

Periodontitis	No		Yes		p value
	N	wt row%	N	wt row%
Adequate sleep					<.0001
<7 hours	609	48.6	875	51.4
7 or more hours	1037	55.0	1219	45.0
Age groups					<.0001
30 to less than 45 years	837	69.6	504	30.4
45 to less than 55 years	394	49.9	551	50.1
55 years and above	415	35.4	1039	64.6
Sex					<.0001
Female	1015	61.6	858	38.4
Male	631	43.6	1236	56.4
Race/ethnicity					<.0001
Non-Hispanic White	914	57.3	876	42.3
Non-Hispanic Black	245	41.2	426	58.8
Mexican American	212	33.4	464	66.6
Other	275	49.3	328	50.7
Education					<.0001
HS graduate/less	610	40.4	1231	59.6
Some coll/tech/more	1033	60.7	857	39.3
Smoking					<.0001
Current	221	35.7	507	64.3
Former	372	47.5	580	52.5
Never	1053	60.2	1007	39.8
Number of missing teeth					<.0001
0–5	1,023	63.3	811	36.7
6–9	388	50.3	515	49.7
10–20	152	25.3	510	74.7
More than 20	83	25.1	258	74.9
Federal Poverty Level Index					<.0001
0 to less than 1.25	312	35.7	627	64.3
1.25 to less than 2.00	228	44.3	355	55.7
2.00 to less than 4.00	393	49.8	513	50.2
4.00 and above	573	64.6	389	14.7
Insurance coverage					<.0001
Yes	1349	56.2	1486	43.8
No	297	37.0	608	63.0
Diabetes					<.0001
Yes	151	33.4	408	66.6
No	1495	55.2	1686	44.8

Abbreviations: NHANES-National Health and Nutrition Examination Surveys; N = number of participants; wt% = weighted percentage; HS = high school; coll = college; tech = technical school.