Flow chart of selected households and children included in the study, Muleba Tanzania.
A total of 10,941 children with a median age of 7 (IQR: 4, 10) years were analysed. There were an almost equal number of children between study arms across all surveys. LLIN usage dropped over survey time. However, the proportion was almost balanced between arms, except during the second year of the trial in 2016, 1221 (62.3%) of children in standard LLIN arm use LLIN and 1086 (57.2%) in PBO LLIN arm. A total of 4,611 households were analysed and were equally distributed between arms and almost half of the households in each arm were sprayed in 2015. Overall, within each survey year, LLIN ownership and access were almost similar between the two arms, but there was a drop over time (