Table 3 Distribution of the sociodemographic factors and bivariate analysis for the risk of acquiring pneumonia

Family income^*

>1MS

156 (43.6)

201 (51.7)

1

(minimum wage [MW])

≤1MS

202 (564)

188 (48.3)

0.03

1.38

1.04–1.84

Household crowding^†

No

287 (721)

320 (86.5)

1

Yes

111 (27.9)

50 (13.5)

<0.01

2.47

1.70–3.58

Maternal age^‡

≥19 years

369 (91.3)

389 (95.6)

1

<19 years

35 (8.7)

18 (4.4)

0.02

2.05

1.14–3.68

Maternal education^¶(years of schooling)

≥11 years

151 (38.3)

196 (48.6)

1

<11 years

243 (61.7)

207 (51.4)

<0.01

1.52

1.15–2.02

Smoking in the home

No

285 (70.4)

321 (78.9)

1

Yes

120 (29.6)

86 (21.1)

<0.01

1.57

1.14–2.16

Maternal smoking

No

374 (91.9)

391 (96.1)

1

Yes

33 (8.1)

16 (3.9)

0.01

2.16

1.67–3.98