Table 3 Summary of the multivariate regression coefficients of 15 factors in the incidences of lung cancer

Constant coefficient, α₀

0.00

0.00

0.00

Air quality aspect

 PM_2.5, β₁

0.69

-0.16

-0.52

 ODO, β₂

-^*

0.07

-0.39

 NMHC, β₃

-1.60

0.35

0.68

Point source aspect

 PM_2.5, γ₁

2.35

-11.17

-0.11

 NO_x, γ₂

-

10.99

0.57

 NMHC, γ₃

-1.20

0.44

-0.66

Line source aspect

 PM_2.5, δ₁

-

-0.21

4.92

 NO_x, δ₂

-

-0.55

-3.35

 NMHC, δ₃

-

2.15

-1.94

Area source aspect

 PM_2.5, 𝜉₁

-1.52

0.44

0.45

 NO_x, 𝜉₂

0.90

-1.73

0.35

 NMHC, 𝜉₃

-1.34

-0.47

-0.11

Social economics aspect

 Population density, 𝜆₁

-0.15

-0.25

0.12

 Salary, 𝜆₂

-0.53

0.07

-0.78

 Medical manpower, 𝜆₃

1.02

-0.14

-0.22

 R-squared

1

0.90

0.87

 p-values

-^**

0.00

0.00