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Table 6 Summary of the multivariate regression coefficients of five aspects for pneumonia

From: Effects of regional air pollutants on respiratory diseases in the basin metropolitan area of central Taiwan

Coefficients

Urban

Suburban

Rural

Constant coefficient, α0

-0.13

0.03

0.02

Air quality aspect

 PM2.5, β1

3.20

-0.58

-0.24

 ODO, β2

-*

-0.06

-0.00

 NMHC, β3

3.68

0.04

0.12

Point source aspect

 PM2.5, γ1

-1.72

-14.07

-0.35

 NOx, γ2

-

13.94

-0.13

 NMHC, γ3

0.22

0.09

0.19

Line source aspect

 PM2.5, δ1

-

7.74

-5.59

 NOx, δ2

-

-5.47

2.97

 NMHC, δ3

-

-2.32

2.42

Area source aspect

 PM2.5, 𝜉1

-0.48

-0.56

0.10

 NOx, 𝜉2

0.83

0.54

-0.02

 NMHC, 𝜉3

3.60

-0.03

-0.11

Social economics aspect

 Population density, 𝜆1

-1.24

-0.27

-0.01

 Salary, 𝜆2

-0.59

-0.36

0.29

 Medical manpower, 𝜆3

0.18

0.68

-0.65

 R-squared

1

0.687

0.830

 p-values

-**

0.276

0.011

  1. * An independent variable that was excluded by SPSS statistical estimation when R2 = 1
  2. ** The p-value approaches zero