Table 6 Frequencies of highly cited publications’ research topic distributions over the years
From: A systematic review of high impact empirical studies in STEM education
Year | TC1 | TC2 | TC3 | TC4 | TC5 | TC6 | TC7 | Total |
|---|---|---|---|---|---|---|---|---|
2005 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 |
2007 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
2008 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 3 |
2009 | 0 | 0 | 1 | 1 | 0 | 2 | 0 | 4 |
2010 | 0 | 0 | 1 | 3 | 0 | 3 | 0 | 7 |
2011 | 1 | 0 | 3 | 2 | 0 | 5 | 0 | 11 |
2012 | 0 | 0 | 1 | 2 | 2 | 7 | 1 | 13 |
2013 | 1 | 0 | 2 | 2 | 1 | 3 | 0 | 9 |
2014 | 1 | 3 | 0 | 1 | 2 | 7 | 0 | 14 |
2015 | 2 | 2 | 3 | 2 | 2 | 5 | 0 | 16 |
2016 | 0 | 0 | 2 | 1 | 4 | 2 | 0 | 9 |
2017 | 0 | 0 | 0 | 1 | 0 | 5 | 0 | 6 |
2018 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 3 |
2019 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 3 |
Total | 5 | 5 | 13 | 162 | 12 | 481 | 1 | 100 |