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Table 1 Characteristics of Mvomero study population with complete case serology data (N = 691)

From: A longitudinal cohort study of malaria exposure and changing serostatus in a malaria endemic area of rural Tanzania

 

Survey 1 (2011)

Survey 2 (2012)

Survey 3 (2013)

Age in years (N%)

 <2

145 (21.0%)

101 (14.6%)

30 (4.3%)

 2–5

149 (21.6%)

 166 (24.0%)

 173 (25.0%)

 5–10

129 (18.7%)

134 (19.4%)

173 (25.0%)

 10–15

31 (4.5%)

53 (7.7%)

74 (10.7%)

 15–20

18 (2.6%)

14 (2.0%)

18 (2.6%)

 20–30

88 (12.7%)

82 (11.9%)

69 (10.0%)

 30–40

81 (11.7%)

79 (11.4%)

81 (11.7%)

 40+

50 (7.2%)

62 (9.0%)

73 (10.6%)

Gender

 Male

272 (39.4%)

 Female

419 (60.6%)

Malaria infections

 N (%)

34 (5.0%)

47 (6.8%)

95 (14.2%)

Seropositive (AMA-1)

 N (%)

313 (45.4%)

249 (36.4%)

302 (43.9%)

Seropositive (MSP-1)

 N (%)

227 (33.0%)

192 (27.9%)

278 (40.2%)

Number of seroconversion events (AMA-1)

n/a

 

 N (% of seronegative in previous survey)

19 (5.0%)

73 (19.7%)

Number of seroconversion events (MSP-1)

 

 N (% of seronegative in previous survey)

42 (9.1%)

110 (22.0%)

Number of seroreversion events (AMA-1)

 

 N (% of seropositive in previous survey)

81 (25.9%)

21 (8.4%)

Number of seroreversion events (MSP-1)

 

 N (% of seropositive in previous survey)

77 (33.9%)

26 (13.5%)