Table 1 Parameter estimates obtained from the chest radiograph model for each of the different cities studied. The standard errors are shown in parentheses

${\widehat{\beta }}_{0,k}$

10.98 (2.51)

12.73 (1.71)

10.84 (2.14)

3.18 (1.68)

9.15 (2.86)

${\widehat{\beta }}_{V,k}$

0.05 (0.01)

0.06 (0.00)

0.06 (0.01)

0.05 (0.01)

0.11 (0.01)

${\widehat{\beta }}_{T,k}$

-0.15 (0.03)

-0.24 (0.02)

-0.14 (0.02)

-0.05 (0.02)

-0.22 (0.03)

${\widehat{\phi }}_{k,1}$

0.91 (0.05)

0.92 (0.07)

0.79 (0.13)

0.96 (0.05)

0.95 (0.03)

${\widehat{\theta }}_{k,1}$

-0.74 (0.07)

-0.83 (0.11)

-0.69 (0.14)

-0.90 (0.07)

-0.89 (0.05)

${\widehat{\Phi }}_{k,1}$

0.88 (0.16)

0.88 (0.04)

0.83 (0.25)

-0.49 (0.34)

0.84 (0.08)

${\widehat{\Theta }}_{k,1}$

-0.84 (0.17)

-0.99 (0.06)

-0.77 (0.28)

0.42 (0.36)

-0.73 (0.10)

${\widehat{\sigma }}_k^2$

10.71

18.09

12.45

6.46

18.33