Diarrhea prevalence in a randomized, controlled prospective trial of point-of-use water filters in homes and schools in the Dominican Republic

Table 1 Household characteristics by village

De-identified village name	Total sponsored households eligible for inclusion^a	Total households in primary analyses^b	Village response rate	Initial treatment group^c	Geographic location	School received filter?^d
A	26	25	96.2%	Control	North	No
B	30	21	70.0%	Simultaneous	Capital–1	Yes
C	35	17	48.6%	Control	Capital–2	No
D	32	5	15.6%	Home	Capital–1	No
E	46	38	82.6%	Control	North	No
F	60	41	68.3%	Home	North	No
G	18	12	66.7%	Home	North	No
H	40	36	90.0%	School	Capital–2	Yes
I	38	22	57.9%	Control	South	Yes
J	24	3	12.5%	School	East	Yes
K	72	4	5.6%	Home	East	No
L	50	16	32.0%	Control	East	No
M	47	32	68.1%	Home	Capital–2	Yes
N	62	8	12.9%	Control	East	Yes
O	50	15	30.0%	Simultaneous	South	Yes
P	45	27	60.0%	Home	Capital–1	No
Total	675	322	47.7%	–	–	–

^a Number of sponsored households within the village as of August 2018
^b Use in primary analyses means that at least one household survey pre-household filter installation and at least one household survey post-household filter installation are available, consent of the respondent was received, and at least 90% of the survey question responses were valid/not missing
^c Since all households and eligible schools ultimately received a filter, treatment groups listed in the table are “initial” groups with subsequent installation of school/home measurements and commensurately collected survey data
^d Nine schools declined receiving a filter at the school because they determined they were not in need of a filter. Note: No water samples were taken before this determination was made

ISSN: 1349-4147