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Table 1 Baseline characteristics of participants enrolled in the longitudinal study and CSS in Korogwe and Muheza districts

From: Accuracy of malaria rapid diagnostic tests in community studies and their impact on treatment of malaria in an area with declining malaria burden in north-eastern Tanzania

Variable

Longitudinal study

(Pre-RDTs)

Longitudinal study

(Post-RDTs)

CSS

Number of cases sampled/attended

5576

18217

5759

Mean age in years (range)

26.2(0, 96.0)

22.2(0, 98.2)

8.1(0, 20.0)

Age group (< 5 years, %)

1065(19.1)

4275(23.5)

2033(35.3)

Sex- Male (%)

42.9

46.0

45.4

Cases with fever

(axillary temperature ≥37.5°C, %)

1720(30.9)

5866(32.2)

176(3.1)

Cases with BS positive (%)

1130(20.5)

3779(20.8)

1045(18.2)

Cases wtih RDT Positive (%)

NA

5038(27.8)

931(16.2)

PfGMPD* (95% CI)

3589(3081,4180)

5479(5051,5944)

489(428,558)

  1. CSS = cross-sectional surveys, % = percentage,°C = degree centigrade, BS = blood smears, RDTs = malaria rapid diagnostic tests, *PfGMPD = Plasmodium falciparum geometric mean parasite density (asexual parasites/μl), 95% CI = 95% confidence interval, NA = Not applicable