Table 1. Matching Cases to Controls.
| Variable | Value | Invasive Cases | Healthy Controls | p-Value (Invasive vs. Healthy) |
|---|---|---|---|---|
| N | Sample Size | 43 (33.1%) | 87 (66.9%) | |
| Ethnicity | Asian-Filipino | 1 (2.3%) | 0 (0.0%) | 0.42 |
| Black | 0 (0.0%) | 2 (2.3%) | ||
| Caucasian | 31 (72.1%) | 71 (81.6%) | ||
| Hispanic | 1 (2.3%) | 3 (3.4%) | ||
| Mixed | 3 (7.0%) | 5 (5.7%) | ||
| Unknown | 7 (16.3%) | 6 (6.9%) | ||
| Collection Date | mean (sd) | 2006-01-30 (317 days) | 2005-11-29 (406 days) | 0.34 |
| Date Range | Oldest Collection | 2004-04-23 | 2004-05-12 | |
| Newest Collection | 2008-06-13 | 2008-06-06 | ||
| Age at Blood Draw | mean (sd) | 56 (12) | 54 (10) | 0.55 |