Table 1

 National average PM effect estimates obtained from Model (1) and Model (2)

ModelBase dfDouble dfHalf df
*1000 times the national average PM effect estimate. The value in parentheses is the standard error of this estimate.
All cause mortality
Model (1), lag 00.079 (0.050)*0.044 (0.046)0.107 (0.052)
Model (1), lag 10.180 (0.044)0.149 (0.047)0.254 (0.048)
Model (1), lag 20.059 (0.056)0.024 (0.056)0.143 (0.054)
Model (2), k = 30.115 (0.037)0.107 (0.034)0.145 (0.039)
Cardiovascular and respiratory mortality
Model (1), lag 00.103 (0.068)0.056 (0.067)0.134 (0.066)
Model (1), lag 10.232 (0.060)0.179 (0.067)0.309 (0.059)
Model (1), lag 20.210 (0.078)0.144 (0.075)0.305 (0.079)
Model (2), k = 30.168 (0.047)0.140 (0.044)0.196 (0.051)