|
Mean age, years ± SD
|
40.8 ± 15.04
|
41.1 ± 13.91
|
41.0 ± 14.47
|
|
Age range, years
|
13 – 83
|
18 – 85
|
13 – 85
|
|
Sex, male %
|
55.8
|
48.9
|
52.4
|
|
Sex, female %
|
44.2
|
51.1
|
47.6
|
|
Race, White %
|
61.1
|
60.6
|
60.8
|
|
Black %
|
33.2
|
36.7
|
34.9
|
|
Asian %
|
4.2
|
1.6
|
2.9
|
|
American Indian or Alaska Native %
|
1.6
|
0.5
|
1.1
|
|
Other %
|
0
|
0.5
|
0.3
|
|
Ethnicity, Hispanic or Latino %
|
5.3
|
7.4
|
6.3
|
|
Not Hispanic or Latino %
|
94.7
|
92.6
|
93.7
|
|
Onset day of cold symptoms before study entry
| | | |
|
−8 days %
|
0.5
|
0
|
0.3
|
|
−6 days %
|
0.5
|
0
|
0.3
|
|
−5 days %
|
3.7
|
5.3
|
4.5
|
|
−4 days %
|
26.8
|
19.7
|
23.3
|
|
−3 days %
|
39.5
|
38.3
|
38.9
|
|
−2 days %
|
21.1
|
32.4
|
26.7
|
|
−1 days %
|
7.4
|
4.3
|
5.8
|
|
0 days %
|
0.5
|
0
|
0.3
|
|
Onset day of productive cough before study entry
| | | |
|
−7 days %
|
0.5
|
0
|
0.3
|
|
−5 days %
|
0
|
0.5
|
0.3
|
|
−4 days %
|
2.6
|
1.1
|
1.9
|
|
−3 days %
|
14.7
|
10.1
|
12.4
|
|
−2 days %
|
46.3
|
50.5
|
48.4
|
|
−1 days %
|
31.1
|
34.0
|
32.5
|
|
0 days %
|
4.7
|
3.7
|
4.2
|
|
Diagnosis before study entry
| | | |
|
Acute nasopharyngitis/rhinopharyngitis %
|
81.6
|
83.0
|
82.3
|
|
Acute bronchitis %
|
10.0
|
6.9
|
8.5
|
|
Acute sinusitis %
|
4.7
|
6.9
|
5.8
|
|
Acute pharyngitis %
|
2.6
|
2.1
|
2.4
|
|
Acute laryngitis %
|
0.5
|
0.5
|
0.5
|
|
Other %
|
0.5
|
0.5
|
0.5
|
