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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