Association of Alanine Aminotransferase and Periodontitis: A Cross-Sectional Analysis—NHANES 2009–2012

Table 1

Sample characteristics, NHANES 2009–2012, .

	Number	Weighted percentage
Alanine Aminotransferase (serum)
<40 units/liter (normal)	5,062	87.9
≥40 units/liter	696	12.1
Periodontitis
No	2,946	60.1
Yes	2,812	39.9
Mild	207	3.0
Moderate	2,048	30.1
Severe	557	6.9
Sex
Male	2,884	49.9
Female	2,874	50.1
Race/ethnicity
Non-Hispanic white	2,308	68.1
Non-Hispanic black	1,231	10.6
Mexican American	932	8.4
Other	1,287	13.0
Age
30–44 years	2,407	41.9
45–54 years	1,536	28.7
55–69 years	1,815	29.4
Education
Less than HS	1,393	15.5
HS graduate	1,218	20.4
Some coll./tech.	1,613	29.6
Coll./tech. graduate	1,527	34.6
Family income to poverty ratio
0 to less than 2.00	2,417	30.1
2.00 and above	2,853	69.9
Alcohol consumption
Nonuse	1,293	20.5
Moderate use	2,041	51.1
Heavy use	1,391	28.4
Smoking status
Current	1,219	19.0
Former	1,307	24.9
Never	3,229	56.1
Body mass index
0–24	1,478	27.0
25–29	1,995	36.0
30 and above	2,252	37.0
Insurance
Yes	4,178	79.3
No	1,580	20.7
Diabetes
Yes	732	18.0
No	2,394	82.0

SE: standard error of row percent; HS: high school; and coll./tech.: college technical school.