“…The results were also inconsistent: depression has been reported to correlate with self-stigma in four studies (Schrag et al, 2001;Oguru et al, 2010;Ma et al, 2016;Salazar et al, 2019) but not in another three studies (Chapuis et al, 2005;Wu et al, 2014;da Silva et al, 2020). Younger age has been reported to correlate with self-stigma in two studies (Wu et al, 2014;Salazar et al, 2019) but not in another five studies (Schrag et al, 2001;Chapuis et al, 2005;Oguru et al, 2010;Ma et al, 2016;da Silva et al, 2020), while apathy, difficulties in ADL, non-motor symptoms, H&Y stage, marital status, biphasic dyskinesia, morning akinesia, end-ofdose fluctuations, and unpredictable offs have been reported to correlate with self-stigma only in a single study (Chapuis et al, 2005;Oguru et al, 2010;Wu et al, 2014;da Silva et al, 2020). The heterogeneous results might partially ascribe to the different cultural backgrounds as self-stigma originates in the social context (Major and O'Brien, 2005).…”