Table 2.
Multivariable analysis of association between individual and household level factors and mortality among individuals with Ebola virus disease, overall and after excluding probable disease
| All cases | All cases excluding probable disease | ||||
|---|---|---|---|---|---|
| Odds ratio (95%CI)* | P | Odds ratio (95%CI)* | P | ||
| Age (years) | |||||
| <2 | 10.2 (2.5 to 41.0) | <0.001 | 8.0 (1.7 to 37.3) | <0.001 | |
| 2-4 | 1.3 (0.42 to 3.8) | 1.4 (0.41 to 4.9) | |||
| 5-9 | 0.92 (0.31 to 2.8) | 1.2 (0.39 to 4.0) | |||
| 10-14 | 0.70 (0.22 to 2.2) | 0.74 (0.23 to 2.4) | |||
| 15-19 | 1.1 (0.40 to 3.0) | 0.87 (0.30 to 2.5) | |||
| 20-29 | 1 | 1 | |||
| 30-39 | 4.1 (1.9 to 9.0) | 3.7 (1.6 to 8.1) | |||
| 40-49 | 6.1 (2.4 to 15.6) | 5.1 (2.0 to 13.5) | |||
| ≥50 | 10.1 (3.6 to 28.4) | 8.4 (3.0 to 23.6) | |||
| Sex | |||||
| Female | 1 | 0.80 | 1 | 0.44 | |
| Male | 1.1 (0.67 to 1.7) | 1.2 (0.74 to 2.0) | |||
| Exposure level† | |||||
| Corpse | 1 | 0.01 | 1 | 0.01 | |
| Fluid | 0.38 (0.16 to 0.89) | 0.46 (0.19 to 1.1) | |||
| Direct wet | 1.1 (0.52 to 2.4) | 1.3 (0.60 to 2.6) | |||
| Direct dry | 2.1 (0.83 to 5.0) | 2.7 (1.1 to 7.0) | |||
| Indirect wet | 0.48 (0.096 to 2.4) | 0.52 (0.10 to 2.6) | |||
| Indirect dry | 1.2 (0.33 to 4.2) | 2.1 (0.44 to 9.9) | |||
| Minimal/none | 1.2 (0.44 to 3.2) | 1.2 (0.43 to 3.3) | |||
| Month of illness | |||||
| November | 1 | 0.04 | 1 | 0.01 | |
| December | 0.65 (0.30 to 1.4) | 0.48 (0.21 to 1.1) | |||
| January | 1.2 (0.44 to 3.3) | 0.69 (0.23 to 2.0) | |||
| February/March | 0.21 (0.064 to 0.72) | 0.14 (0.041 to 0.49) | |||
| Occupation | |||||
| Manual | 1 | 0.04‡ | 1 | 0.07‡ | |
| Non-manual | 2.7 (1.0 to 7.2) | 2.8 (1.1 to 7.5) | |||
| Child/student | 1.4 (0.55 to 3.5) | 1.6 (0.64 to 4.2) | |||
| Healthcare worker | 5.2 (1.1 to 25.2) | 3.8 (0.79 to 18.4) | |||
| Unknown | 1.4 (0.20 to 10.4) | 0.59 (0.070 to 5.1) | |||
| Household size (no of people) | |||||
| 1-5 | 1 | 0.003 | 1 | <0.001 | |
| 6-10 | 2.1 (0.63 to 7.1) | 2.4 (0.71 to 7.9) | |||
| 11-15 | 3.1 (0.93 to 10.4) | 3.6 (1.1 to 12.2) | |||
| ≥16 | 7.0 (2.0 to 24.5) | 8.4 (2.4 to 29.2) | |||
*Odds ratios adjusted for all other factors in the table.
†Corpse=direct contact with body of a person who died of Ebola virus disease; fluid=direct contact with body fluids of patient with wet symptoms; direct wet=direct contact with patient with wet symptoms; direct dry=direct contact with patient with dry symptoms; indirect wet=indirect contact with patient with wet symptoms; indirect dry=indirect contact with patient with dry symptoms; minimal/none=minimal or no known contact.
‡Excluding unknown category.