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Table representation of search results timeline featuring number of search results per year.
Year | Number of Results |
---|---|
1996 | 1 |
1999 | 1 |
2000 | 3 |
2001 | 2 |
2004 | 1 |
2005 | 1 |
2006 | 1 |
2007 | 1 |
2009 | 1 |
2011 | 2 |
2013 | 1 |
2015 | 1 |
2016 | 2 |
2017 | 3 |
2018 | 2 |
2019 | 2 |
2020 | 4 |
2021 | 3 |
2022 | 4 |
2023 | 3 |
2024 | 0 |
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RESULTS: The mean weight of a school bag in the initial study was 6.3 0.8 (range between 4,7 and 9 kg). A tendency to carry slightly heavier school bags was noted in boys (6.7 vs. 5.9 kg; p = 0,00001). This tendency has linearly changed with age (R = 0.68; p < 0,001). I
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