Table 1 Characteristics of study population: demographic, parasitological, and entomological data

Initial cohort

 n

99

113

212

–

 Thick blood smears

  Negative (%)

43 (43.4)

52 (46.0)

95 (44.8)

0.706

  Positive (%)

56 (56.6)

61 (54.0)

117 (55.2)

0.811

 Parasite density^a

  Geometric mean (min–max)

3.55 (2.93–4.29)

4.58 (3.72–5.64)

3.18

0.079

 Human biting rate (BHN)

  An. gambiae

2

78

–

***

  Culex s.l.

81

1

–

***

 Study cohort^b

  n

35

41

76

–

  Gender ratio (male/female)

0.94 (17/18)

0.95 (20/21)

0.95 (37/39)

0.98

  Mean age (years, 95% CI)

6.5 (5.4–7.6)

7.2 (6.3–8.2)

6.9 (5.9–7.9)

0.35

 IgG to gSG6-P1^c

  Low exposure group

0.73 (0.61;0.90)

0.97 (0.74;1.08)

–

0.071

  High exposure group

1.84 (1.61;2.11)

1.45 (1.38;1.62)

–

0.001