Volume 16, Number 7—July 2010
Research
Ebola Hemorrhagic Fever Associated with Novel Virus Strain, Uganda, 2007–2008
Table 3
Bivariate analysis of risk factors for Ebola viral hemorrhagic fever, Bundibugyo district, Uganda, 2007–2008*
Potential risk factor | Probable case, n = 74 | Confirmed case, n = 42 | Probable/confirmed case, n = 116 | Noncase, n = 76 (ref.) |
---|---|---|---|---|
Hospitalized/visited hospital, no. (%) | 38 (51.40) | 36 (85.70) | 74 (63.79) | 31 (40.80) |
OR (95% CI) | 1.5 (0.8–3.1) | 8.7 (3.0–26.3) | 2.6 (1.4–4.9) | 1 |
p value |
0.2 |
<0.001 |
<0.05 |
|
Consulted traditional healer, no. (%) | 1 (1.4) | 0 | 1 (0.9) | 4 (5.3) |
OR (95% CI) | 0.25 (0.01–2.4) | Undefined | 0.2 (0.01–1.5) | 1 |
p value |
0.2 |
0.06 |
||
Participated in funeral rituals, no. (%) | 43 (58.1) | 32 (76.2) | 75 (64.7) | 23 (30.2) |
OR (95% CI) | 3.2 (1.6–6.6) | 7.4 (2.9–19.3) | 4.22 (2.2–8.2) | 1 |
p value |
<0.001 |
<0.001 |
<0.001 |
|
Traveled before illness, no. (%) | 29 (39.20) | 11 (26.20) | 40 (34.50) | 15 (19.74) |
OR (95% CI) | 2.62 (1.2–5.8) | 1.4 (0.5–3.8) | 2.1 (1.0–4.5) | 1 |
p value |
<0.05 |
0.03 |
||
Had contact with person with known suspected case, no. (%) | 48 (64.90) | 42 (100.00) | 90 (77.60) | 43 (56.58) |
OR (95% CI) | 1.4 (0.7–2.9) | Undefined | 2.7 (1.35–5.24) | 1 |
p value |
0.3 |
<0.05 |
||
Had contact with wildlife, no. (%) | 1 (1.4) | 0 | 1 (0.9) | 1 (1.3) |
OR (95% CI) | 1.0 (0.0–38.4) | Undefined | 0.7 (0.02–24.30) | 1 |
p value |
1.0 |
0.8 |
||
Male sex, no. (%) | 40 (54.00) | 25 (59.52) | 65 (56.00) | 37 (29.31) |
OR (95% CI) | 1.2 (0.6–2.5) | 1.6 (0.7–3.6) | 1.3 (0.7–2.5) | 1 |
p value |
0.5 |
0.3 |
0.3 |
|
Age 41–60 y, no. (%) | 18 (24.30) | 16 (38.10) | 34 (0.90) | 18 (1.32) |
OR (95% CI) | 1.0 (0.5–2.3) | 2.0 (0.8–4.9) | 1.3 (0.7–2.7) | 1 |
p value | 0.9 | 0.1 | 0.4 |
*Ref., reference; OR, odds ratio; CI, confidence interval. Boldface indicates significant associations.