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Table 3 Respiratory diseases and exposure group

From: Effect of household air pollution due to solid fuel combustion on childhood respiratory diseases in a semi urban population in Sri Lanka

Respiratory diseases

High exposure groupd

Low exposure groupe

RR (95% CI)

URTIa

 Number of episode

91

61

1.03 (0.74–1.45)

 Total child months

1768

1218

 Incidence Rate (Number of episodes / 1000 months of observation)

51.5

50.1

LRTIb

 Number of episodes

166

70

1.63 (1.23–2.19)

 Total child months

1768

1218

 Incidence Rate (Number of episodes / 1000 months of observation)

93.9

57.5

RTIc

 Number of episodes

257

131

1.35 (1.09–1.68)

 Total child months

1768

1218

 Incidence Rate (Number of episodes / 1000 months of observation)

145.4

107.6

Asthma

 Number of episodes

378

264

0.99 (0.84–1.16)

 Total child months

1768

1218

 Incidence Rate (Number of episodes / 1000 months of observation)

213.8

216.7

Infection induced asthma

 Number of episodes

124

42

2.03 (1.42–2.96)

 Total child months

1768

1218

 Incidence Rate (Number of episodes / 1000 months of observation)

70.1

34.5

Rhinitis

 Number of episodes

249

181

0.95 (0.78–1.16)

 Total child months

1763

1217

 Incidence Rate (Number of episodes / 1000 months of observation)

141.2

148.7

  1. a refers to upper respiratory tract infections, b refers to lower respiratory tract infection and crefers to respiratory tract infections including both URTI and LRTI, d Children exposed to biomass fuel and kerosene oil as the principal type of cooking fuel e Children exposed to LPG and electricity as the principal type of cooking fuel