Table 4.
Water quality measurements by study.
| Reference | Country | N | CFU TTC/100 mL | Log10 TTC | Number of households per TTC category (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean ± SD | Median | Mean ± SD | Median | < 1 | 1–10 | 11–100 | 101–1,000 | > 1,000 | |||
| Clasen et al. 2005 | Colombia | 401 | 77.8 ± 115.8 | 17 | 1.2 ± 0.9 | 1.2 | 104 (25.9) | 71 (17.7) | 127 (31.7) | 99 (24.7) | — |
| Clasen et al. 2006 | Bolivia | 101 | 35.3 ± 87.7 | 0 | 0.6 ± 0.9 | 0.0 | 64 (63.4) | 9 (8.9) | 16 (15.8) | 12 (11.9) | — |
| Peletz et al. 2011 | Zambia CS | 234 | 700.3 ± 2130.4 | 74 | 1.6 ± 1.3 | 1.9 | 71 (30.3) | 21 (9.0) | 29 (12.4) | 84 (35.9) | 29 (12.4) |
| Peletz et al. 2012 | Zambia RCT | 1,313 | 668.7 ± 1802.9 | 20 | 1.4 ± 1.3 | 1.3 | 421 (32.1) | 196 (14.9) | 240 (18.3) | 261 (19.9) | 195 (14.9) |
| Boisson et al. 2009 | Ethiopia | 234 | 451.4 ± 1792.1 | 85 | 1.7 ± 1.1 | 1.9 | 47 (20.1) | 12 (5.1) | 72 (30.8) | 79 (33.8) | 24 (10.3) |
| Boisson et al. 2010 | DR Congo | 815 | 1548.5 ± 5721.8 | 140 | 1.6 ± 1.4 | 2.2 | 236 (29.0) | 99 (12.1) | 56 (6.9) | 319 (39.1) | 105 (12.9) |
| Clasen et al. 2014 | India | 4,902 | 686.8 ± 1147.6 | 60 | 1.7 ± 1.3 | 1.8 | 1,528 (31.2) | 300 (6.1) | 874 (17.8) | 1,180 (24.1) | 1,020 (20.8) |
| Overall | 8,000 | 726.4 ± 2235.6 | 47 | 1.6 ± 1.3 | 1.7 | 2,471 (30.9) | 708 (8.8) | 1,414 (17.7) | 2,034 (25.4) | 1,373 (17.2) | |
| Abbreviations: CFU, colony forming unit; CS, cross-sectional; RCT, randomized, controlled trial; TTC, thermotolerant coliform. | |||||||||||