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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1970 | 1 |
| 1973 | 1 |
| 1977 | 2 |
| 1978 | 2 |
| 1979 | 2 |
| 1980 | 6 |
| 1981 | 1 |
| 1982 | 3 |
| 1983 | 3 |
| 1984 | 3 |
| 1985 | 3 |
| 1986 | 4 |
| 1987 | 4 |
| 1988 | 2 |
| 1989 | 4 |
| 1990 | 11 |
| 1991 | 7 |
| 1992 | 4 |
| 1993 | 7 |
| 1994 | 4 |
| 1995 | 6 |
| 1996 | 7 |
| 1997 | 4 |
| 1998 | 5 |
| 1999 | 12 |
| 2000 | 10 |
| 2001 | 9 |
| 2002 | 14 |
| 2003 | 11 |
| 2004 | 11 |
| 2005 | 30 |
| 2006 | 30 |
| 2007 | 28 |
| 2008 | 52 |
| 2009 | 38 |
| 2010 | 39 |
| 2011 | 53 |
| 2012 | 58 |
| 2013 | 58 |
| 2014 | 83 |
| 2015 | 97 |
| 2016 | 101 |
| 2017 | 94 |
| 2018 | 130 |
| 2019 | 149 |
| 2020 | 141 |
| 2021 | 160 |
| 2022 | 180 |
| 2023 | 157 |
| 2024 | 56 |
The joint use of solid fuel for cooking and heating was associated with reduced muscle strength (beta = -0.835, 95% CI: -1.306, -0.365, P < 0.01 in model 3) and mass (beta = -0.038, 95% CI: -0.061, -0.015, P < 0.01 in model 3) than clean fuel for cooking and heati
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