Table 2.
Association of Select Community-Level Variables With CMV Seropositivitya
| Community Variable | Community Level–Only Model | Community- and Individual-Level Model | ||
|---|---|---|---|---|
| OR | P | OR | P | |
| Median family income | ||||
| Quartile 1 | Reference | Reference | ||
| Quartile 2 | 0.78 | .03 | 0.81 | .05 |
| Quartile 3 | 0.67 | .001 | 0.74 | .01 |
| Quartile 4 | 0.58 | <.0001 | 0.65 | .002 |
| Average household size | ||||
| Quartile 1 | Reference | Reference | ||
| Quartile 2 | 0.88 | .06 | 0.88 | .18 |
| Quartile 3 | 0.93 | .49 | 0.99 | .93 |
| Quartile 4 | 0.97 | .73 | 1.03 | .78 |
| Population density | ||||
| Quartile 1 | Reference | Reference | ||
| Quartile 2 | 1.18 | .10 | 1.39 | .23 |
| Quartile 3 | 1.16 | .15 | 1.45 | .11 |
| Quartile 4 | 1.12 | .29 | 1.49 | .12 |
| Percent nonwhite | ||||
| Quartile 1 | Reference | Reference | ||
| Quartile 2 | 1.33 | .01 | 0.99 | .90 |
| Quartile 3 | 1.87 | <.0001 | 1.14 | .36 |
| Quartile 4 | 1.81 | <.0001 | 0.92 | .61 |
Abbreviation: CMV, cytomegalovirus.
a
In this analysis, we took into account both individual variables and variables aggregated at the census-tract level. Median family income was associated inversely with the prevalence of CMV IgG even after we adjusted for patient race and age.