Table 3 Type of stove used, location, and ventilation among those who used solid fuel for cooking
From: Indoor solid fuel use and tuberculosis in China: a matched case-control study
| Â | Case | Control |
|---|---|---|
Total | 149 (100%) | 293 (100%) |
Type of stove used for cooking | Â | Â |
   Open fire | 0 | 0 |
   Surrounded fire | 5 (3.4%) | 9 (3.1%) |
   Improved single-pot stove | 4 (2.7%) | 5 (1.7%) |
   Improved multiple-pot stove | 0 | 1(0.3%) |
   Griddle stove | 127 (85.2%) | 254 (86.7%) |
   Unknown | 13 (8.2%) | 24 (7.4%) |
Smoke removed by hood or chimney | Â | Â |
   Yes | 137 (92.0%) | 272 (92.8%) |
   No | 11(7.4%) | 17 (5.8%) |
   Unknown | 1 (0.7%) | 4(1.4%) |
Location of cooking | Â | Â |
   In a room used for living / sleeping | 6 (4.0%) | 5 (1.7%) |
   In a separate room | 37(24.8%) | 82 (28.0%) |
   In a separate building | 101 (67.8%) | 198 (67.6%) |
   Outdoors | 1 (0.7%) | 1 (0.3%) |
   Unknown | 4 (2.7%) | 7 (2.4%) |
Ventilation at location of cooking | Â | Â |
   Closed room | 5(3.4%) | 4(1.4%) |
   Room with eaves spaces | 11(7.4%) | 43(14.7%) |
   Room with open windows / doors | 100(67.1%) | 169(57.7%) |
   Room with 3 or fewer walls | 3 (2.0%) | 7 (2.4%) |
   Other | 4(2.7%) | 9(3.1%) |
   Unknown | 26(17.5%) | 61(20.8%) |