Fig 1.
Top left panel: complete study site. Monay is the external control area, and the other four areas, in which clusters were randomized, are shown in the other three panels. Top right: Flor de Patria and Pampán. Bottom left: Pampanito. Bottom right: Motatán. Solid lines are roads. The colour coding of clusters shows clusters allocated to jar covers only, curtains only, both jar covers and curtains, or control. The base map includes roads from Open Street Map (www.openstreetmap.org) accessed via the R package “osmdata”.
Fig 2.
Photographs show: A) an ITJC being fitted to a water storage drum; B-C) ITCs being hung at windows.
Fig 3.
CONSORT flowchart showing the recruitment and allocation of houses to the study arms and retention over time.
Table 1.
Mean cluster-level values of the Breteau, Pupae per Person (PPI), House and Container Indices recorded at baseline in the study arms and external control arm, in Trujillo, Venezuela.
Fig 4.
Entomological indices presented by study arm over time.
Individual dots represent individual clusters. The lines join the arithmetic means over clusters at each time point. The numerical values are included in S1 Table.
Table 2.
Comparison of entomological indices between trial arms.
The randomized arms (Control, ITC, ITJC and ITC + ITJC) were compared in a single generalized linear model analysis for each endpoint. The non-randomized external control was compared with the randomized control in a separate analysis for each endpoint.
Fig 5.
Coverage of the interventions by study arm over time.
Individual dots represent individual clusters.