Table 3. Demographic information of trainees presenting with upper respiratory infection and infected with adenovirus (Ad) or 2009 H1N1 alone (n  =  313).

	Ad +(n = 255)	2009 H1N1 +(n = 58)	p-value
Gender			0.047*
Male	234 (91.8%)	49 (84.5%)
Female	21 (8.2%)	9 (15.5%)
Age (IQR)	20 (19–21)	20 (18–22)	0.54
Race-Ethnicity			0.34*
White	170 (68.8%)	40 (74.1%)
Black	40 (16.2%)	4 (7.4%)
Hispanic	25 (10.1%)	7 (13.0%)
Asian	8 (3.2%)	1 (1.9%)
Other/Multiple	4 (1.6%)	2 (3.7%)
Week of Training	6 (5–7)	5 (3–5.25)	<0.01
Body mass index (kg/m2)	23.7 (21.9–25.1)	23.6 (21.3–25.3)	0.28
Perceived Stress Level**	4 (3–5)	5 (3–6)	0.43
Smoking history	34 (13.1%)	8 (13.3%)	1.0
Week of year (IQR)	26 (21–31)	38 (36–40)	<0.01

IQR, interquartile range.

Spearman correlation.

Ten point Likert scale where 10 represents maximal subjective stress and 0 is no stress at all.