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. Author manuscript; available in PMC: 2009 Nov 1.
Published in final edited form as: Accid Anal Prev. 2008 Sep 4;40(6):1797–1803. doi: 10.1016/j.aap.2008.07.011

Table 3.

Poisson regression coefficients for economic variables associated with IMUI in an MSA-month for infants born in 26 MSAs of California, 1999–2003 (standard errors in parentheses)

Model 1 Model 2
MSA employment variable lagged at:
   0 months −.0786 (.0473)* −.0900 (.0481)*
   1 month −.0110 (.0479) −.0013 (.0646)
   2 months .0290 (.0466) .0534 (.0582)
   3 months −.0379 (.0468) −.0234 (.0548)
Population Offset Term Yes Yes
Dispersion Parameter Yes Yes
MSA Fixed Effects Yes --
MSA Random Effects -- Yes
Log Likelihood −610.44 −639.38
*

p < 0.05, 1-tailed test