Table 1. Demographic aspects and clinical characteristics of hospitalized patients with P. vivax malaria, dengue fever and P. vivax malaria and dengue fever co-infection admitted to a tertiary health center (Manaus, Brazil).
| Variables | P. vivax (A) | Dengue fever (B) | Co-infection (C) | A×C | B×C | ||
| OR (CI 95%) | p b | OR (CI 95%) | p b | ||||
| N = 176 (%) | N = 584 (%) | N = 44 (%) | |||||
| Male | 92 (52.3) | 277 (47.4) | 22 (50) | 0.91 (0.47–1.76) | 0.787 | 1.1 (0.6–2.0) | 0.742 |
| Age (years) | |||||||
| 0–14 | 29 (16.4) | 60 (10.4) | 3 (6.9) | 1 | 0.078c | 1 | 0.086c |
| 15–40 | 105 (59.6) | 355 (61.5) | 22 (51.1) | 2.02 (0.56–7.24) | 1.23 (0.35–4.26) | ||
| 41–60 | 26 (14.7) | 126 (21.8) | 12 (27.9) | 4.46 (1.13–17.58) | 1.9 (0.51–7.0) | ||
| >60 | 16 (9.1) | 36 (6.2) | 6 (13.9) | 3.62 (0.79–16.48) | 3.33 (0.78–14.15) | ||
| Pregnancy a | 14 (18.1) | 8 (3.8) | 4 (19.0) | 1.05 (0.30–3.63) | 0.928 | 11.4 (3.12–41.65) | <0.001 |
| Chronic diseases | 46 (26.4) | 98 (24.8) | 12 (27.2) | 1.04 (0.49–2.19) | 0.911 | 1.14 (0.56–2.29) | 0.714 |
| Previous malaria | 67 (38.1) | - | 15 (38.0) | 0.84 (0.42–1.68) | 0.626 | - | - |
a
Total of 77 women in group A, 210 women in group B and 22 women in group C;
b
p value of the Wald test derived from Logistic regression;
c
p value from Student's T test.