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Table 2 Chemoprevention of malaria in Ugandan children, 2010–2013

From: Evaluation of the impact of disease prevention measures: a methodological note on defining incidence rates

Trial arm Sample size Number of events Person-year at riska Event/PYAR Event/observation timeb
Control 98 760 109.3 6.953 5.490
SP 98 725 107.8 6.725 5.347
TS 99 609 116.8 5.214 4.346
DP 98 366 121.3 3.017 2.704
Overall 393 2460 455.2 5.404 4.477
  1. aObservation time minus malaria curative treatment time
  2. bEstimated using Eq. 3