TABLE A1.
Institution, Overlapping Authors, and Extraction Period of Included Studiesa
| First author (Year) | Institution | Overlapping Authors | Extraction Period |
|---|---|---|---|
| Beck4 (2019) | Department of Orthopaedic Surgery, Rush University Medical Center | None | 1/2012 to 1/2017 |
| Chaharbakhshi6 (2019)a | American Hip Institute | Domb, Perets | 4/2010 to 11/2014 |
| Chaharbakhshi7 (2017) | American Hip Institute | Domb, Perets | 2/2008 to 4/2014 |
| Chandrasekaran8 (2017)a | American Hip Institute and Hinsdale Orthopaedics | Domb | 4/2008 to 4/2013 |
| Cvetanovich12 (2017) | Rush University Medical Center | None | 1/2012 to 1/2014 |
| Domb14 (2018) | American Hip Institute and Hinsdale Orthopaedics | Chaharbakhshi, Perets | 2/2008 to 12/2010 |
| Domb16 (2013)b | American Hip Institute and Hinsdale Orthopaedics | None | 4/2008 to 11/2010 |
| Evans17 (2017)c | Larner College of Medicine, University of Vermont; Southeast Orthopedic Specialists; University of Illinois College of Medicine; Pritzker School of Medicine, University of Chicago; Stritch School of Medicine, Loyola University Chicago; and American Hip Institute | Chaharbakhshi, Domb | 1/2008 to 1/2013 |
| Fukui18 (2015) | Steadman Philippon Research Institute | None | 6/2005 to 3/2011 |
| Hatakeyama22 (2018) | Wakamatsu Hospital, University of Occupational and Environmental Health | None | 3/2009 to 12/2014 |
| Maldonado27 (2018)d | American Hip Institute | Domb, Perets | 11/2008 to 1/2015 |
| Nawabi34 (2016) | Hospital for Special Surgery | None | 3/2009 to 7/2012 |
| Yoon48 (2019) | Department of Orthopedic Surgery, Jeonbuk National University Medical School | None | 3/2015 to 12/2017 |
| McClincy29 (2019) | Child and Young Adult Hip Preservation Program, Department of Orthopedic Surgery, Boston Children’s Hospital | None | 1/2010 to 12/2014 |
| Mose32 (2019) | Department of Orthopedics, School of Medical Sciences, Örebro University | None | 1/2010 to 8/2011 |
aChaharbakhshi et al6 (2019) and Chandrasekaran et al8 (2017) were excluded because the authors were affiliated with the same institution as Chaharbakhshi et al7 (2017) and had a shorter duration of inclusion.
bDomb et al16 (2013) was excluded because the authors were affiliated with the same institution as those of Domb et al14 (2018) and had shorter follow up from an older period (i.e. less recent results).
cEvans et al17 (2017) was included because more institutions other than the American Hip Institute were involved; this could have been a result of multisite research and, therefore, a multisite patient population. Additionally, this study involved a younger patient population (<18 years); again, more likely there was less overlap, as no other included study had this inclusion/exclusion criterion.
dMaldonado et al27 (2018) was included because it had different and more precise inclusion/exclusion criteria than did the other studies included; this could also have minimized patient overlap before publication, and thus, this article was included.