Table 2 Type of fuels used by study participants
From: Indoor solid fuel use and tuberculosis in China: a matched case-control study
| Â | Case | Control |
|---|---|---|
Total | 202 (100%) | 404 (100%) |
No food cooked at home | 2 (1.0%) | 2 (0.5%) |
Electricity | 8 (4.0%) | 11 (2.7%) |
Liquefied petroleum gas | 38 (18.8%) | 87 (21.5%) |
Natural gas/Biogas | 4 (2.0%) | 9 (2.2%) |
Kerosene | 0 | 0 |
Coal / lignite | 16 (7.9%) | 22 (5.5%) |
Charcoal | 3 (1.5%) | 1(0.3%) |
Wood | 12 (5.9%) | 33 (8.2%) |
Straw / shrubs / grass | 77 (38.1%) | 144 (35.6%) |
Animal dung | 0 | 0 |
Agricultural crop residue | 41(20.3%) | 93 (23.0%) |
Unknown | 1(0.5%) | 2(0.5%) |