Table 4.
Improved Cookstove Adoption Indicators
| CHW Follow Up Survey | Verification Round 1–6 weeks to 6 months after distribution | Verification Round 2–10 months to 1 year after Distribution | |||||||
|---|---|---|---|---|---|---|---|---|---|
| n | % | 95 % CI | n or value | % | ±95 % CI | n or value | % | ±95 % CI | |
| EcoZoom Present | 97640 | 98.8 % | 0.07 % | 996 | 99.6 % | 0.39 % | 186 | 99.5 % | 1.05 % |
| Stove Type - Cooking at Time of Visit | 14358 | 14.7 % | 0.22 % | 181 | 18.2 % | 2.39 % | 30 | 16.1 % | 5.27 % |
| EcoZoom | 10798 | 75.2 % | 0.27 % | 144 | 77.8 % | 2.57 % | 25 | 83.3 % | 5.34 % |
| Traditional 3-Stone Fire | 2374 | 16.5 % | 0.23 % | 20 | 10.8 % | 1.92 % | 6 | 20.0 % | 5.73 % |
| Rondereza - Locally Made Wood Burning Stove | 864 | 6.0 % | 0.15 % | 15 | 8.1 % | 1.69 % | 3 | 10.0 % | 4.30 % |
| Imbabura - Locally Made Charcoal Stove | 200 | 1.4 % | 0.07 % | 6 | 3.2 % | 1.10 % | 0 | 0.0 % | 0.00 % |
| Reported Last Time Cooking Stove | |||||||||
| EcoZoom | 80954 | 79.2 % | 0.25 % | 838 | 82.0 % | 2.38 % | 157 | 80.5 % | 5.68 % |
| Traditional 3-Stone Fire | 14942 | 14.6 % | 0.22 % | 118 | 11.5 % | 1.98 % | 27 | 13.8 % | 4.95 % |
| Rondereza - Locally Made Wood Burning Stove | 4877 | 4.8 % | 0.13 % | 53 | 5.2 % | 1.37 % | 7 | 3.6 % | 2.67 % |
| Imbabura - Locally Made Charcoal Stove | 936 | 0.9 % | 0.06 % | 12 | 1.2 % | 0.67 % | 4 | 2.1 % | 2.03 % |
| Other | 482 | 0.5 % | 0.04 % | 1 | 0.1 % | 0.19 % | 0 | 0.0 % | 0.00 % |
| Reported Primary Stove | 0.00 % | ||||||||
| EcoZoom | 91704 | 92.8 % | 0.16 % | 928 | 92.8 % | 1.60 % | 167 | 89.3 % | 4.43 % |
| Traditional 3-Stone Fire | 4829 | 4.9 % | 0.13 % | 49 | 4.9 % | 1.34 % | 18 | 9.6 % | 4.23 % |
| Rondereza - Locally Made Wood Burning Stove | 1711 | 1.7 % | 0.08 % | 17 | 1.7 % | 0.80 % | 0 | 0.0 % | 0.00 % |
| Imbabura - Locally Made Charcoal Stove | 436 | 0.4 % | 0.04 % | 5 | 0.5 % | 0.44 % | 2 | 1.1 % | 1.47 % |
| Other | 124 | 0.1 % | 0.02 % | 1 | 0.1 % | 0.20 % | 0 | 0.0 % | 0.00 % |
| Reported Use of Other Stoves Besides Primary Stove | 48013 | 48.6 % | 0.31 % | 475 | 47.5 % | 3.10 % | 96 | 51.3 % | 7.16 % |
| Reported Type of Stoves Used Other than Primary Stove | |||||||||
| EcoZoom | 63 | 12.5 % | 2.05 % | 20 | 19.8 % | 5.71 % | |||
| Traditional 3-Stone Fire | 277 | 55.2 % | 3.08 % | 53 | 52.5 % | 7.16 % | |||
| Rondereza - Locally Made Wood Burning Stove | 112 | 22.3 % | 2.58 % | 18 | 17.8 % | 5.49 % | |||
| Imbabura - Locally Made Charcoal Stove | 49 | 9.8 % | 1.84 % | 10 | 9.9 % | 4.28 % | |||
| Other | 1 | 0.2 % | 0.28 % | 0 | 0.0 % | 0.00 % | |||
| % Of Cooking Events on EcoZoom Stove | 86.4 % (SD: 18.4 %) | 92.5 % (SD:12.7 %) | |||||||
| Location - Cooking at Time of Visit | 0.00 % | ||||||||
| Indoor | 31 | 16.8 % | 2.31 % | 3 | 9.7 % | 4.24 % | |||
| Outdoor with Cover | 14 | 7.6 % | 1.64 % | 0 | 0.0 % | 0.00 % | |||
| Outdoor without Cover | 102 | 55.1 % | 3.08 % | 19 | 61.3 % | 6.98 % | |||
| Doorway | 17 | 9.2 % | 1.79 % | 2 | 6.5 % | 3.52 % | |||
| Separate Kitchen | 21 | 11.4 % | 1.97 % | 7 | 22.6 % | 5.99 % | |||
| Reported Primary Cooking Location | |||||||||
| Indoor | 6427 | 6.5 % | 0.15 % | 60 | 6.0 % | 1.47 % | 22 | 11.8 % | 4.62 % |
| Outdoor with Cover | 4668 | 4.7 % | 0.13 % | 69 | 6.9 % | 1.57 % | 7 | 3.7 % | 2.72 % |
| Outdoor without Cover | 60548 | 61.3 % | 0.30 % | 695 | 69.5 % | 2.85 % | 134 | 71.7 % | 6.46 % |
| Doorway | 21259 | 21.5 % | 0.26 % | 115 | 11.5 % | 1.98 % | 11 | 5.9 % | 3.37 % |
| Separate Kitchen | 5835 | 5.9 % | 0.15 % | 59 | 5.9 % | 1.46 % | 13 | 7.0 % | 3.65 % |
| Other | 67 | 0.1 % | 0.02 % | 2 | 0.2 % | 0.28 % | 0 | 0.0 % | 0.00 % |
| Reported Fewer Cooking Events Per Week Indoors | 7.33 (SD: 5.87) | 7.23 (SD: 4.61) | |||||||
| Fuel - Cooking at Time of Visit | |||||||||
| Wood | 166 | 89.2 % | 1.92 % | 29 | 93.5 % | 3.52 % | |||
| Straw/Shrubs/Grass | 11 | 5.9 % | 1.46 % | 2 | 6.5 % | 3.52 % | |||
| Agricultural Crop | 1 | 0.5 % | 0.45 % | 0 | 0.0 % | 0.00 % | |||
| Charcoal | 7 | 3.8 % | 1.18 % | 0 | 0.0 % | 0.00 % | |||
| LPG/Natural Gas/Biogas | 0 | 0.0 % | 0.00 % | 0 | 0.0 % | 0.00 % | |||
| Electricity | 0 | 0.0 % | 0.00 % | 0 | 0.0 % | 0.00 % | |||
| Other | 1 | 0.5 % | 0.45 % | 0 | 0.0 % | 0.00 % | |||
| Reported Primary Cooking Fuel | |||||||||
| Wood | 95864 | 97.0 % | 0.11 % | 970 | 97.0 % | 1.06 % | 181 | 96.8 % | 2.53 % |
| Straw/Shrubs/Grass | 2343 | 2.4 % | 0.09 % | 17 | 1.7 % | 0.80 % | 4 | 2.1 % | 2.07 % |
| Agricultural Crop | 170 | 0.2 % | 0.03 % | 3 | 0.3 % | 0.34 % | 0 | 0.0 % | 0.00 % |
| Charcoal | 334 | 0.3 % | 0.04 % | 6 | 0.6 % | 0.48 % | 1 | 0.5 % | 1.05 % |
| LPG/Natural Gas/Biogas | 47 | 0.0 % | 0.01 % | 0 | 0.0 % | 0.00 % | 0 | 0.0 % | 0.00 % |
| Electricity | 12 | 0.0 % | 0.01 % | 0 | 0.0 % | 0.00 % | 0 | 0.0 % | 0.00 % |
| Other | 34 | 0.0 % | 0.01 % | 4 | 0.4 % | 0.39 % | 1 | 0.5 % | 1.05 % |