| Study | Reason for exclusion |
|---|---|
| Allen 2010 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Bevilacqua 2020 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Bueno 2017 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Cakit 2007 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Calabro 2019 | No falls reported. |
| Celiker 2018 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Chang 2019 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Cherup 2019 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Chomiak 2017 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Chou 2017 | Not RCT. |
| Citrome 2018 | No falls reported. |
| Cosentino 2013 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Cummings 2013 | Not idiopathic Parkinson's disease participants. |
| da Silva 2019 | No falls reported. |
| Deepa 2019 | Not RCT. |
| de Lucena 2017 | No falls reported. |
| de Natale 2017 | Not RCT. |
| Duncan 2018 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Elmer 2018 | No falls reported. |
| El‐Tamawy 2013 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Emre 2010 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Galli 2018 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Geroin 2018 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Giardini 2018 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Giladi 2013 | Not RCT. |
| Grobbelaar 2017 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Gu 2013 | No falls reported. |
| Gurevich 2007 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Hackney 2007 | No falls reported. |
| Hauser 2013 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Hauser 2016 | Intervention (droxidopa medication) targets syncopal falls. |
| Hawkins 2018 | No falls reported. |
| Hewitt 2018 | Not idiopathic Parkinson's disease. |
| Hill 2015 | Separate data for the participants with Parkinson's disease not available. |
| Hiller 2018 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Hubble 2018 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Hubble 2019 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Kalyani 2020 | Not RCT. |
| Kanegusuku 2017 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Klamroth 2019 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Kurlan 2015 | No falls reported. |
| Lang 2016 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Lees 2017 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| LeWitt 2019 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Li 2019 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Lieberman 2019 | No falls reported. |
| Litvinenko 2007 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Litvinenko 2008 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Mancini 2019 | No falls reported. |
| Marumoto 2019 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| McDonald 2018 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Mezzarobba 2018 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Mi 2019 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Miller 2019 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Moro 2010 | No falls reported. |
| Myers 2019 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Negrini 2017 | Not RCT. |
| Nieuwboer 2007 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Oertel 2013 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Okun 2012 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Olanow 2020 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Ozgonenel 2016 | Not RCT. |
| Perez 2017 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Pohl 2020 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Postuma 2008 | Not RCT. |
| Rascol 2016 | Not RCT. |
| Rawson 2019 | Not RCT. |
| Sato 2011 | Publication of the trial retracted by the journal due to concerns regarding the integrity of the data. |
| Sato 2013 | Not RCT. |
| Schenkman 2018 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Scianni 2015 | Not RCT. |
| Sedaghati 2018 | Not RCT. |
| Silva‐Batista 2018 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Simuni 2020 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Sparrow 2016 | Randomised cross‐over trial that did not collect falls data during the control period. |
| St George 2015 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Stozek 2003 | No falls reported. |
| Strouwen 2017 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Thevathasan 2010 | Not RCT. |
| Toole 2005 | No falls reported. |
| van Nimwegen 2013 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Van Puymbroeck 2018 | No falls reported. |
| Vercruysse 2014 | Not RCT. |
| Walter 2019 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Wass 2008 | Not RCT. |
| Welter 2015 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Whone 2019 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
| Wong 2016 | Not RCT. |
| Yuan 2020 | No falls reported. |
| Zhang 2018 | Intervention not aiming to reduce falls in people with Parkinson's disease. |
RCT: randomiused controlled trial.