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Table 4 Time-lagged associations between PM2.5 exposure (per 10 µg/m³ increase) and asthma exacerbation

From: Short-term exposure to fine particulate matter and asthma exacerbation: a large population-based case-crossover study in Southern Thailand

Lag days

OR (95% CI)

(per 10 µg/m³ increase in PM2.5)

P-value

Lag0

1.18 (0.93, 1.50)

0.184

Lag1

1.23 (0.97, 1.56)

0.093

Lag2

1.25 (0.98, 1.60)

0.077

Lag3

0.97 (0.77, 1.23)

0.807

Lag4

1.08 (0.85, 1.37)

0.518

Lag5

1.01 (0.81, 1.26)

0.932

Lag6

0.86 (0.69, 1.08)

0.202

Lag7

0.94 (0.75, 1.19)

0.613

Lag01

1.19 (0.93, 1.53)

0.163

Lag02

1.23 (0.96, 1.59)

0.107

Lag03

1.10 (0.85, 1.43)

0.453

Lag04

1.18 (0.91, 1.52)

0.204

Lag05

1.18 (0.91, 1.54)

0.205

Lag06

1.13 (0.87, 1.45)

0.364

Lag07

1.09 (0.84, 1.41)

0.532

  1. OR, odds ratio; CI, confidence interval
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Environmental Health

ISSN: 1476-069X