Table 1 Demographic and clinical features of the study population

Mean Age ± SD

5.0 ± 4.1 yrs

Clinical findings

N (%)

Physical examinations

N (%)

Age range (min–max)

1 mo–18 yrs

  Cough

992 (93.8)

 Rale

688 (65)

Age

N (%)

  Fever

911 (86.1)

 Wheezing

206 (19.5)

 < 12 month

146 (14.3)

  Sputum

825 (78)

 Decreased aeration

111 (10.5)

 1–3 yrs

310 (30.3)

  Rhinorrhea

541 (51.1)

 Hypoxia < 95%

55 (5.2)

 4–6 yrs

210 (20.5)

  Poor oral intake

137 (12.9)

 Chest retraction

50 (4.7)

 7–11 yrs

281 (27.5)

  Chill

86 (8.1)

Prescribed antibiotics

N (%)

≧ 12 yrs

75 (7.3)

  Sore throat

86 (8.1)

 Macrolide

654 (69.6)

 Unknown

1 (0.1)

  Dyspnea

58 (5.5)

 Cephalosporin

383 (40.8)

 Total

1,023

  GI symptom

 Penicillin series

312 (33.2)

Gender

N (%)

    Vomiting

70 (6.6)

 Tetracyclin

59 (6.3)

 Male

537 (52.5)

    Diarrhea

37 (3.5)

 Quinolone

39 (4.2)

 Female

486 (47.5)

    Abdominal pain

34 (3.2)

 Aminoglycoside

5 (0.5)

Place of treatment

N (%)

  Myalgia

36 (3.4)

 Vancomycin

3 (0.3)

 Hospitalized

976 (95.4)

  Chest pain

21 (2)

 Lincomycin

3 (0.3)

 Outpatient clinic

45 (4.4)

  Hoarseness

17 (1.6)

 Total

939

Species of sample

N (%)

  Rash

11 (1)

 Nasopharyngeal aspirates

727 (71.1)

  Hemoptysis

5 (0.5)

 Sputum

195 (19.1)

Chest X-ray finding

N (%)

 Nasopharyngeal swab

73 (7.1)

  Peribronchial infiltration

470 (44.4)

 Bronchoalveolar lavage

12 (1.2)

  Lobar infiltration

453 (42.8)

 Throat swab

8 (0.8)

  Interstitial infiltration

117 (11.1)

 Transtracheal aspirate

2 (0.2)

  Pleural effusion

40 (3.8)