Table 2.
Comparison of Risk Factors in Case Patients With Confirmed or Probable Marburg Virus Disease (MVD) and Test-Negative Controls Initially Suspected of Having MVD
| Risk Factor | Cases, % |
Controls, % |
P Valuea |
Odds Ratio (95% CI) |
|---|---|---|---|---|
| Contact with a case | 24 (96) | 41 (42) | <.0001 | 33.4 (4.3, 256.7) |
| Attending a funeral | 13 (62) | 20 (23) | .0006 | 5.3 (1.9, 14.8) |
| Male sex | 10 (38) | 65 (55) | .13 | 0.5 (.3, 1.2) |
| Travel before illness | 8 (36) | 22 (25) | .30 | 1.7 (.6, 4.6) |
Abbreviation: CI, confidence interval.
a
By χ2 analysis or the Fisher exact test. A P value of ≤ .01 is considered significantly significant.