Table 2.
Univariate logistic regression of demographic and diagnostic features by species of malaria infection
| Feature | P. falciparum $ | P. vivax $ | OR (95% CI) | p value |
|---|---|---|---|---|
| Male, n/N (%) | 210/228 (92.1) | 768/838 (91.6) | 1.1 (0.6–1.9) | 0.806 |
| Age, y, Mean ± SD | 27.0 ± 11.2 | 27.4 ± 10.5 | 1.0 (1.0–1.0) | 0.659 |
| Construction workers, n/N (%) | 107/228 (46.9) | 461/838 (55.0) | 0.7 (0.6–1.0) | 0.046* |
| Born in Goa, n/N (%) | 30/228 (13.2) | 96/838 (11.5) | 1.2 (0.8–1.9) | 0.337 |
| Born in SW India, n/N (%) | 56/228 (24.6) | 187/838 (22.3) | 1.1 (0.8–1.6) | 0.475 |
| Born in E India, n/N (%) | 134/228 (58.8) | 545/838 (65.0) | 0.8 (0.6–1.1) | 0.103 |
| % Parasitaemia, Mean ± SD | 1.3 ± 2.7 | 0.6 ± 0.7 | 1.6 (1.4–1.9) | <0.001*** |
| Temperature, C, Mean ± SD | 38.1 ± 1.6 | 38.2 ± 1.4 | 1.0 (0.9–1.0) | 0.642 |
| High fever (>38.1 °C), n/N (%) | 104/228 (45.6) | 380/838 (45.3) | 1.0 (0.8–1.4) | 0.769 |
| Severe fever (>38.9 °C), n/N (%) | 71/228 (31.1) | 235/838 (28.0) | 1.2 (0.9–1.7) | 0.266 |
| Haemoglobin, g/dL, Mean ± SD | 10.9 ± 2.6 | 11.6 ± 2.1 | 0.9 (0.8–0.9) | <0.001*** |
| Anaemia, n/N (%) | 42/219 (19.2) | 90/837 (10.8) | 2.0 (1.3–2.9) | 0.001** |
| Severe anaemia, n/N (%) | 15/219 (6.8) | 14/837 (1.7) | 4.3 (2.0–9.2) | <0.001*** |
| Hospitalisation, n/N (%) | 107/228 (46.9) | 71/838 (8.5) | 9.1 (6.4–13.0) | <0.001*** |
* p < 0.05; ** p < 0.01; *** p < 0.001, $ excludes mixed-infection cases