Table 2.

Characteristics of participants classified according to the number of days of anxiety.

variables	<7	≥7	p value
N	9,077	3,155
Age	50.25 ± 18.16	46.70 ± 16.22	<0.001
Body mass index	28.91 ± 6.57	29.67 ± 7.35	<0.001
Poverty income ratio	2.60 ± 1.64	2.21 ± 1.59	<0.001
Serum vitamin D	63.23 ± 25.03	60.89 ± 24.14	<0.001
Gender			<0.001
Male	4,828(53.19)	1,279(40.54)
Female	4,249(46.81)	1876(59.46)
Race			<0.001
Mexican American	1,360(14.98)	456(14.45)
Other Hispanic	860(9.47)	365(11.57)
Non-Hispanic White	4,204(46.31)	1,562(49.51)
Non-Hispanic Black	1885(20.77)	586(18.57)
Other Races	768(8.46)	186(5.90)
Educational level			<0.001
<High school	2,263(24.93)	903(28.62)
High school	2,119(23.34)	668(21.17)
>High school	4,695(51.72)	1,584(50.21)
Marital status			<0.001
Not living alone	5,540(61.03)	1758(55.72)
Living alone	3,537(38.97)	1,397(44.28)
Smoking status			<0.001
Smoker	4,004(44.11)	1,602(50.78)
Never smoker	5,073(55.89)	1,553(49.22)
Drinking status
Yes	6,580(72.49)	2,363(74.90)	0.009
No	2,497(27.51)	792(25.10)
Diabetes			0.003
Yes	1,082(11.92)	440(13.95)
No	7,995(88.08)	2,715(86.05)
Hypertension			0.028
Yes	3,158(34.79)	1,166(36.96)
No	5,919(65.21)	1989(63.04)

Continuous variable: mean ± standard deviation. p value: for continuous variables, Kruskal Wallis rank sum tests were performed and Fisher’s exact probability tests were performed for count variables with theoretical counts less than 10.