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Table 1 Characteristics of 240 participants enrolled in malaria incidence study on Bioko Island, Equatorial Guinea (number (%))

From: Incidence of Plasmodium falciparum malaria infection in 6-month to 45-year-olds on selected areas of Bioko Island, Equatorial Guinea

Variable Total Age groups
6 to 59 months
n = 79
5 to 17 years
n = 81
18 to 45 years
n = 80
Median age in years (range) 9.80 (1.02, 42.51) 2.65 (1.02, 4.9) 9.67 (5.01, 17.66) 29.58 (18.3, 42.5)
Sex
 Male 114 (47.5) 37 (46.8) 40 (49.4) 37 (46.3)
 Female 126 (52.5) 42 (53.2) 41 (50.6) 43 (53.8)
Area
 Area I 53 (22.1) 18 (22.8) 18 (22.2) 17 (21.3)
 Area II 63 (26.3) 27 (34.2) 21 (25.9) 15 (18.8)
 Area III 59 (24.6) 10 (12.7) 19 (23.5) 30 (37.5)
 Area IV 65 (27.1) 24 (30.4) 23 (28.4) 18 (22.5)
Household SES
 Lower 68 (28.3) 17 (21.5) 23 (28.4) 28 (35)
 Upper lower 31 (12.9) 14 (17.7) 07 (8.6) 10 (12.5)
 Middle 51 (21.3) 25 (31.6) 14 (17.3) 12 (15.0)
 Upper middle 43 (17.9) 13 (16.5) 16 (19.8) 14 (17.5)
 Upper 47 (19.6) 10 (12.7) 21 (25.9) 16 (20.0)
Use bed net as vector control 239 (99.6) 79 (100) 80 (98.8) 80 (100)
Clear vegetation around the house 185 (77.1) 61 (77.2) 59 (72.8) 65 (81.3)
Drying standing water 157 (65.4) 59 (74.7) 54 (66.7) 44 (55.0)
TBS positive before enrollmentb 15 (6.3) 2 (2.5) 9 (11.1) 4 (5)
Haemoglobin level (mean ± SD)
 Male 11.9 ± (1.7) 10.7 ± (0.9) 11.4 ± (1.3) 13.6 ± (1.4)
 Female 10.9 ± (1.3) 10.6 ± (1.2) 11.0 ± (1.3) 11.1 ± (1.3)
Creatinine level in mg/dL (median, range)a 0.47 (0.2, 2.04) 0.29 (0.20, 0.49) 0.49 (0.27, 0.80) 0.76 (0.23, 2.04)
Glucose level in mg/dL (median with range) 86 (61, 154) 88 (63, 154) 86 (62, 134) 84 (61, 147)
  1. All values are number (%), unless specified otherwise
  2. aN = 239, one subject in group 2 lacks creatinine results
  3. bMalaria positive at screening or between screening and enrollment (within 2 months before enrolled into the study; however all participants were given presumptive treatment and retested before the day of initiation of the study and were negative by TBS before entering surveillance. Retrospective qPCR confirmed negative results in all included study subjects 14 days after AL treatment