Table 1 Overall characteristics of malaria CRTs identified in the systematic review (n:71)
Trial characteristics | n | % |
|---|---|---|
Intervention type | Â | Â |
 Community engagement | 1 | 1.4 |
 Drug | 26 | 36.6 |
 Drug & Vector | 5 | 7.0 |
 Vector | 39 | 54.9 |
Primary outcome | Â | |
 Incidence | 39 | 54.9 |
 Prevalence | 32 | 45.1 |
Malaria species | Â | |
 P. falciparum | 52 | 73.2 |
 P. falciparum & P. vivax | 19 | 26.8 |
Design | Â | |
 Parallel | 61 | 85.9 |
 Factorial | 4 | 5.6 |
 Crossover | 2 | 2.8 |
 Stepped wedge | 4 | 5.6 |
Randomisation method | Â | |
 Block | 1 | 1.4 |
 Pair matched | 9 | 12.7 |
 Restricted | 16 | 22.5 |
 Simple | 28 | 39.4 |
 Stratified | 17 | 23.9 |
Number of study arms | Â | |
 2 | 55 | 77.5 |
 3 | 9 | 12.7 |
 4 | 7 | 9.9 |
Cluster type | Â | |
 Basic | 53 | 74.6 |
 Buffered | 8 | 11.3 |
 Fried egg | 10 | 14.1 |
Level of analysis | Â | |
 Cluster | 23 | 32.4 |
 Individual | 48 | 67.6 |
Formal sample size equationa | ||
 Yes | 53 | 74.6 |
 No | 18 | 25.4 |
Reported being underpoweredb | ||
 Yes | 17 | 23.9 |
 No | 54 | 76.1 |