Table 3 Association models for LRI and PM2.5, controlled for various covariates.

From: Spatial patterns of lower respiratory tract infections and their association with fine particulate matter

Model

Coefficient of PM2.5 (95% confidence interval [CI])

p-value

Main modela

0.207 (0.058–0.356)

 < 0.01

Sensitivity test adjusted for covariates

Model 1b

0.204 (0.051–0.357)

 < 0.01

Model 2c

0.205 (0.052–0.358)

 < 0.01

Model 3d

0.212 (0.059–0.365)

 < 0.01

Model 4e

0.211 (0.062–0.362)

 < 0.01

Model 5f

0.200 (0.051–0.347)

 < 0.01

Model 6g

0.420 (0.212–0.627)

 < 0.001

  1. aControl variables included density of population, sex (% of male), age, smoking, alcohol consumption, economic status, healthcare expenditure, temperature, and wind speed.
  2. bAdjusted for density of population, sex (% of male), and age.
  3. cAdjusted for density of population, sex (% of male), age, and alcohol consumption.
  4. dAdjusted for density of population, sex (% of male), age, alcohol consumption, and smoking.
  5. eAdjusted for density of population, sex (% of male), age, alcohol consumption, smoking, and economic status.
  6. fAdjusted for density of population, sex (% of male), age, alcohol consumption, smoking, economic status, and healthcare expenditure.
  7. gConsidered all covariates and eliminated data from Eastern Mediterranean countries.
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