• Reporting bias

The study protocols for the included studies were not available. Accordingly, Javaloyes\_2019, Kiviniemi\_2007, Kiviniemi\_2010, and Nuuttila\_2017 were considered as having an unclear reporting bias. For their part, Schmitt\_2018 and Vesterinen\_2016 did not report every outcome and were thus considered as having a high risk of reporting bias.
