Association between Dietary Vitamin A and HPV Infection in American Women: Data from NHANES 2003–2016

Table 1

Baseline characteristics of selected participants.

Exposure	No HPV infection	HPV infection	value
BMI, mean ± SD (Kg/m^2)	28.89 ± 7.68	29.06 ± 7.71	0.292
Age, mean ± SD (years)	38.21 ± 12.08	35.86 ± 12.22	<0.001
Poverty income ratio, mean ± SD	2.77 ± 1.69	2.27 ± 1.65	<0.001
How many boyfriends have had in the past one year, mean ± SD (times)	1.10 ± 2.53	1.83 ± 5.03	<0.001
Race (%)			<0.001
Mexican American	19.88	16.92
Other Hispanic	8.48	9.37
Non-Hispanic white	45.78	38.90
Non-Hispanic black	14.70	28.34
Other races	11.16	6.47
Education level (%)			<0.001
Less than 9th grade	7.17	6.13
9–11th grade	10.94	14.26
High school grade	17.30	21.79
College graduate or above	32.18	36.39
Some college or AA degree	32.41	21.43
Marital status (%)			<0.001
Married or cohabiting	68.61	46.88
Widowed or divorced or separated	31.39	53.12
Smoking more than 100 lifetimes (%)			<0.001
None	70.95	58.25
Yes	29.05	41.75
Drink at least 12 glasses of alcohol/1 year (%)			<0.001
0	37.37	29.32
1	62.63	70.68
Vaginal or anal intercourse times in the past year (times) (%)			<0.001
1	3.90	2.94
2	3.23	4.03
12–51	20.96	25.14
52–103	36.66	32.79
104–364	21.63	20.06
≥365	12.71	13.63
0	0.91	1.40