Table 2.
Poisson analyses, using a scan window of ≤25% of the geographic area and ≤25% of the study period, for space–time clustering of canine rabies vaccine-associated adverse events among 13 Banfield metropolitan hospital groups, January 2002 to December 2003, unadjusted and adjusted for patient covariates
| Covariates adjusted for in model | Most likely clustera | Radius (km) | Time year/month (number of month) | Observed/expected ratio | LLRb | P-value |
|---|---|---|---|---|---|---|
| (None) | ATL, TAM | 745.61 | 2002/11–2003/02 (4) | 53/25.4 = 2.09 | 11.76 | 0.001 |
| Age | ATL, TAM | 745.61 | 2002/11–2003/02 (4) | 53/25.9 = 2.04 | 11.14 | 0.002 |
| Sex | ATL, TAM | 745.61 | 2002/11–2003/02 (4) | 53/25.3 = 2.09 | 11.82 | 0.002 |
| Neuter status | ATL, TAM | 745.61 | 2002/11–2003/02 (4) | 53/25.3 = 2.10 | 11.89 | 0.002 |
| Weight | ATL, TAM | 745.61 | 2002/11–2003/02 (4) | 53/25.8 = 2.05 | 11.26 | 0.001 |
| Number of vaccines | ATL, TAM | 745.61 | 2002/11–2003/02 (4) | 53/26.2 = 2.02 | 10.84 | 0.007 |
a
ATL: Atlanta, GA; TAM: Tampa-St. Petersburg, FL.
b
LLR: log likelihood ratio statistic.