Table 1 Characteristics of the study population

Socioeconomic

 Tin or mud house, n/N (%)

13/256 (5.08)

13/248 (5.24)

0/8 (0.00)

 No running water, n/N (%)

31/250 (12.40)

30/242 (12.40)

1/8 (12.50)

 No sewage system, n/N (%)

154/253 (60.87)

150/245 (61.22)

4/8 (50.00)

 Crowding (> 3 inhabitants/room), n/N (%)

73/256 (28.52)

71/248 (28.63)

2/8 (25.00)

 Incomplete parental education, n/N (%)

136/217 (62.67)

133/210 (63.33)

3/7 (42.86)

 Monthly family income in USD, mean (SD)

615.86 (359.95)

607.91 (356.95)

851.50 (403.31)

 Median household inhabitants (IQR)

5 (4–6)

5 (4–6)

5 (4–6)

Patient characteristics

 Female, n/N (%)

114/256 (44.53)

110/248 (44.35)

4/8 (50)

 Age in months (mean, SD)

5.14 (3.01)

5.20 (3.01)

3.22 (2.74)

 Previous medical consultation, n/N (%)

101/256 (39.45)

99/248 (39.92)

2/8 (25)

 Medical insurance, n/N (%)

13/249 (5.22)

13/241 (5.39)

0/8 (0)

Diagnosis on admission

Bronchiolitis, n/N (%)

188/256 (73.44)

181/248 (72.98)

7/8 (87.50)

Pneumonia, n/N (%)

15/256 (5.86)

15/248 (6.05)

-

Pertussis like syndrome, n/N (%)

8/256 (3.13)

8/248 (3.23)

-

Previous wheezing, n/N (%)

9/256 (3.52)

9/248 (3.63)

-

Another respiratory syndrome, n/N (%)

36/256 (14.06)

35/248 (14.11)

1/8 (12.50)^a

 Length of stay in days, median (IQR)

7 (4–10)

7 (4–9.5)

18.5 (10.5–22)

 Oxygen requirement in days, median (IQR)

6 (3–8)

6 (3–8)

15 (6.5–20.5)