TABLE I. Epidemiological and parasitological data of Plasmodium vivax and Plasmodium falciparum infected-patients.
| P. vivax | P. falciparum | |
|---|---|---|
| (n = 47) | (n = 24) | |
| Male [n (%)] | 35 (74.5) | 19 (79.2) |
| Age [n (%)] | 28 (22-38) | 28.5 (23-41) |
| Years of residence in malaria endemic area [n (%)] | 24 (21-36) | 27 (19-38) |
| Years of residence in the state of Rondônia [n (%)] | 23 (16-28) | 23 (16-28) |
| Total number of past malaria episodes [n (%)] | 3 (1-8) | 3.5 (1-10) |
| Months since last malaria episodes [n (%)] | 10 (2.2-24) | 12.5 (2-102) |
| Parasitaemia (number of parasites/µL) | 2,293 (874-17,933) | 1,328 (793-12,623) |
| Days since the symptoms began [n (%)] | 3 (1-8) | 3.5 (1.5-10) |
| Symptoms [n (%)] | ||
| Fever | 39/83 | 22/92 |
| Chills | 32/68 | 20/83 |
| Headache | 39/83 | 21/87 |
| Vomiting | 23/49 | 20/83 |
| Myalgia | 31/66 | 21/87 |
the values on Table indicate median (interquartile range). Frequency of symptoms and gender were compared between P. vivax and P. falciparum infected-patients by chi-squared test. Mann-Whitney U test were used to compare parasitaemia, days since the symptoms began, time since the last malaria infection, number of previously malaria episodes and time in malaria endemic area. There were not statistical differences on epidemiological, clinical and parasitological data between patients infected by P. falciparum and P. vivax.