RESULTS	There was a protective efficacy of 28 % in P. falciparum incidence ( adjusted rate ratio 0.72 , 95 % CI 0.47-1 .08 ) and 9 % in P. falciparum prevalence ( adjusted prevalence ratio 0.91 , 95 % CI 0.65-1 .28 ) in ITN relative to control villages ; however , neither of these estimates reached statistical significance .\