Table 2. Epidemiological parameters grouped in different IgG reactivity profiles.
Epidemiological parameters | PvMSP9E795-A808 (+) PvMSP9-RIRII (+) (n = 177) | PvMSP9E795-A808 (-) PvMSP9-RIRII (+) (n = 139) | PvMSP9E795-A808 (-) PvMSP9-RIRII (-) (n = 230) |
---|---|---|---|
Years of residence in endemic area (Median-IQ) | 29 (20–45) ### | 26.5 (17–37) *** | 19 (15–28) ***; ### |
Months elapsed since the last malaria episode (Median-IQ) | 24 (2–72) # | 16 (2–72) * | 12 (2–48) *; # |
Number of previous malaria infections (Median-IQ) | 5 (2–10) | 5 (2–10) | 5 (2–10) |
Infections in the current year (Mean+SD) | 0.44 ± 0.98 | 0.64 ± 1.46 | 0.68 ± 1.34 |
Infected by P. vivax at the moment of collection (N—%) | 16 (9%) | 6 (4%) | 25 (11%) |
Differences in proportions of number of individuals infected by P. vivax at the moment of collection were evaluated by the chi-square test (χ2) and comparisons of epidemiological parameters were made using the Mann Whitney test.
Significant differences between responders and non-responders to both antigens were indicated in the table by
#: p<0.05
##: p<0.001
###: p<0.0001.
Significant differences between responders to PvMSP9-RIRII only and non-responders were indicated in the table by
*: p<0.05
**: p<0.001
***: p<0.0001.
Statistical differences on epidemiological parameters were not observed between responders and non-responders to PvMSP9E795-A808.