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. 2011 Dec 20;6(6):371–376. doi: 10.1186/2049-6958-6-6-371

Table 3.

Relationships between antibiotic use and disease characteristics

Factor Use of Antibiotics P
Yes (n = 44) No (n = 25)
N % N %
Presence of risk factor 18 40.9 3 12 0.015

Duration of symptoms (day) 5.3 ± 0.53
(Median = 4.5)
2.7 ± 0.21
(Median = 3.0)
0.001

 Fever 21 47.7 10 40 0.610
 Cough 43 97.7 23 92.0 0.296
 Rhinitis 37 84.1 18 72.0 0.350
 Wheezing 44 100 24 96 0.362
 Rale 40 90.9 19 76.0 0.152
 Rhonchus 42 95.5 25 100 0.531
 Use of accessory respiratory muscles 23 52.3 4 16 0.004
 Tachypnea 24 54.2 6 24 0.022
 Nasal flaring 0 45.5 2 8.0 0.001

Recovery period (day) 5.9 ± 0.38
(Median = 5.0)
3.3 ± 0.16
(Median = 3.0)
0.001