Table 2.

Continued use of concrete BSFs in a cross-sectional survey of communities in Bonao, Dominican Republic, from June to July of 2007

Results from cross-sectional survey	RCT*	Non-RCT	All
No. of households selected	157†	247	404
No. of households interviewed	152‡	176§	328
Using BSF (%)¶	143 (91.1%)	158 (89.8%)	301 (90.4%)

^*RCT refers to households that previously participated in a randomized controlled trial of the BSF. Non-RCT refers to households that received BSFs from Rotary Clubs.

^†Total of 157 includes 154 households that completed the RCT in August of 2006 and 3 households that began but did not complete the RCT as intervention households found to still have a BSF.

^‡Multiple attempts were made, but five households were unable to be reached for interview. Two BSF filters had been moved to new and accessible households.

^§No repeat visits were attempted.

^¶The percentage in use was calculated based on the total selected for RCT households and the total interviewed for non-RCT households, because no repeat attempts were made for that group.