Volume 10, Number 10—October 2004
Research
Egg Quality Assurance Programs and Egg-associated Salmonella Enteritidis Infections, United States
Gerald A. Mumma*
, Patricia M. Griffin*, Martin I. Meltzer*, Chris R. Braden*, and Robert V. Tauxe*
, Patricia M. Griffin*, Martin I. Meltzer*, Chris R. Braden*, and Robert V. Tauxe*
Table 3
Descriptive statistics for variables in the regression modela
| Variable | Average | SD |
|---|---|---|
| Rate of change in Salmonella enterica serovar Enteritidis incidence (%) after EQAP adoption | 3.2 | 44.9 |
| % eggs produced under EQAP by states | 63.6 | 29.5 |
| % a state’s population at high risk for S. Enteritidisb | 20.6 | 0.5 |
| States with state-sponsored EQAP (%)c | 60 | 50 |
| States affected by the S. Enteritidis epidemic (%) | 20 | 40 |
| Successful S. Enteritidis outbreak traceback investigations by state per yeard | 0.3 | 1.1 |
| States in the northeast region of United States (D)e | 40 | 50 |
aEQAP, egg quality assurance program; D, dummy variable.
bChildren <5 and seniors >65 as a proxy for population at high risk for S. Enteritidis.
cNot industry-sponsored EQAP.
dNumber of S. Enteritidis outbreak investigations from United States Department of Agriculture S. Enteritidis Task Force Status Reports for 1990 to 1993.
eNortheast region includes Connecticut, Pennsylvania, and New York.
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