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Table 2 Wald test of varying parameters

From: Factors influencing high respiratory mortality in coal-mining counties: a repeated cross-sectional study

Vector of Variables to Test for Joint Insignificance

p-value: adjusted (unadjusted)

β0jt

(1)

c1jt

(2)

c2jt

(3)

β0jt + c1jt

(4)

β0jt + c2jt

(5)

c1jt    +    c2jt

(6)

β0jt + c1jt + c2jt

(7)

(1)All variables except for the intercept

< 0.01 (< 0.01)

< 0.01 (< 0.01)

< 0.01 (< 0.01)

0.02 (< 0.01)

0.02 (< 0.01)

0.14 (< 0.01)

0.29 (< 0.01)

(2) SES: Runemploy, Income, Irural, Imetro

0.31 (0.21)

0.11 (0.04)

0.01 (< 0.01)

0.01 (< 0.01)

0.04 (< 0.01)

0.02 (< 0.01)

0.06 (< 0.01)

(3) HA: bedper1000, hcenterper1000, doctorper1000, Rinsur, Rinsurd>2007

0.08 (0.01)

< 0.01 (< 0.01)

< 0.01 (0.02)

< 0.01 (< 0.01)

< 0.01 (< 0.01)

< 0.01(< 0.01)

< 0.01 (< 0.01)

(4) HR: Robesity, Rinactivity, Rsmoking

0.06 (0.02)

0.15 (0.09)

0.61 (0.56)

0.01 (< 0.01)

0.30 (0.12)

0.30 (0.12)

0.08 (< 0.01)