Table 2 The characteristics of fuel use by ecological setting, Butajira, Ethiopia, 2000-2002 (n = 16899)
From: Sources of variation for indoor nitrogen dioxide in rural residences of Ethiopia
| Â | Ecology type | Â | Â | |
|---|---|---|---|---|
Characteristics | Highland, # (%)* | Lowland, # (%)* | P value for X2 | Total # (%)* |
Type of fuel | Â | Â | Â | Â |
   Only wood | 6209 (73.5) | 2183 (8.5) | p < 0.0001 | 8392 (52.1) |
   Only Crop residue | 2180 (25.8) | 5231 (68.4) |  | 7411 (46.0) |
   Only dung | 63 (0.7) | 234 (3.1) |  | 297 (1.8) |
Total | 8452 (52.5) | 7648 (47.5) | Â | 16100 |
Purpose of having fire | Â | Â | Â | Â |
   Cooking | 8905 (98.6) | 7717 (98.1) | p < 0.0001 | 16622 (98.4) |
   Lighting | 304 (3.4) | 399 (5.1) |  | 703 (4.2) |
   Heating | 3609 (40.0) | 2229 (28.3) |  | 5838 (34.5) |
   Insect repellent | 360 (4.0) | 1762 (22.4) |  | 2122 (12.6) |
Total | 9031 (53.4) | 7868 (46.7) | Â | 16899 |
Food frequency | Â | Â | Â | Â |
   Any one food item | 318 (3.6) | 331 (4.5) | p < 0.0001 | 649 (4.0) |
   Any two food items | 1022 (11.6) | 1423 919.2) |  | 2445 (15.1) |
   Any three food items | 6393 (72.9) | 5433 (73.3) |  | 11826 (73.1) |
   Any 4 & + food items | 1040 (11.9) | 224 (3.0) |  | 1264 (7.8) |
Total | 8773 (54.2) | 7411 (45.8) | Â | 16184 |
Frequency of having fire | Â | Â | Â | Â |
   Any one time | 147 (1.6) | 175 (2.2) | p < 0.0001 | 322 (1.9) |
   Any two times | 1088 (12.0) | 1333 (16.9) |  | 2421 (14.3) |
   Any three times | 7386 (81.8) | 6164 (78.3) |  | 13550 (80.2) |
   Any four times | 410 (4.5) | 196 (2.5) |  | 606 (3.6) |
Total | 9031 (53.4) | 7868 (46.6) | Â | 16899 |