| Notes |
| Risk of bias table |
| Cardona 2002 |
| Notes |
| Risk of bias table |
| Chippendale 2015 |
| Notes |
| Risk of bias table |
| Dawson 2017 |
| Notes |
| Risk of bias table |
| Detmer 2020 |
| Notes |
| Risk of bias table |
| George 2011 |
| Notes |
| Risk of bias table |
| Giglio 2006 |
| Notes |
| Risk of bias table |
| Gruenewald 2016 |
| Notes |
| Risk of bias table |
| Low 2015 |
| Notes |
| Risk of bias table |
| Rook 2003 |
| Notes |
| Risk of bias table |
| Sakuri 2018 |
| Notes |
| Risk of bias table |
| Shkilnyk 1984 |
| Notes |
| Risk of bias table |
| Sipsas‐Herrmann 2000 |
| Notes |
| Risk of bias table |
| Thornton 2017 |
| Notes |
| Risk of bias table |
| Footnotes |
| Characteristics of excluded studies |
| Carlson 2008 |
| Reason for exclusion |
| Fried 2004 |
| Reason for exclusion |
| Footnotes |
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