Solar Drinking Water Disinfection (SODIS) to Reduce Childhood Diarrhea - Recent Advances and Issues in Environmental Science - page 200

Figure 3. Weekly observed proportion of households using SODIS as point-of-use drinking water
purification method. Open triangles, self-reported SODIS use at the beginning (after 3 month of
initial SODIS promotion) and at the end of follow-up; filled dots, SODIS use observed by project
staff living in the community (see Materials and Methods for definition); open circles, SODIS bottles
observed on the roof and/or in the kitchen; stars, SODIS-bottles on the roof; crosses, SODIS-bottles
in the kitchen.

Table 4. Climatic conditions and SODIS use of a cluster-randomized trial involving 22 rural
communities of Totora District, Bolivia.

Category Description Control (n= 11 Clusters) Intervention (n= 11

Clusters)

Climate Percentage of sunny days (> 6 h sunshine)

[median of clusters (min, max)]

70 (57, 78) 67 (44, 77)

Average duration of sunshine [median of
clusters (min, max)]

7.0 (6.3, 8.0) 7.1 (4.5, 8.3)

S0D1S-use Observed level of S0D1S use• Percentage of house-

holds

Percentage of households

0.66-1 0% 14%

0.33-0.66 0.5% 29%

0-0.33 99.5% 57%

• Proportion of weeks in which SODIS was used, as estimated by community-based project staff at the end of study.
Households with < 10 wk of observation are excluded.
doi:1 0.1371 /journal.pmed.1 000125.t004