Table 2

Comparisons depicted in figure 1

P valueCohen’s d
Most affected region (SBR)iRBD versus non-syn<0.0011.22
iRBD versus converted<0.0011.72
Non-syn versus converted<0.0013.43
Most affected region (Z-values)iRBD versus non-syn<0.0011.06
iRBD versus converted<0.0011.68
Non-syn versus converted<0.0013.22
Left region:Right region:
P valueCohen’s dP valueCohen’s d
Posterior putamen (SBR)iRBD versus non-syn<0.0011.16<0.0011.09
iRBD versus converted<0.0011.62<0.0011.78
Non-syn versus converted<0.0013.08<0.0013.52
Anterior putamen (SBR)iRBD versus non-syn<0.0010.85<0.0010.90
iRBD versus converted<0.0011.54<0.0011.65
Non-syn versus converted<0.0012.70<0.0012.75
Caudate (SBR)iRBD versus non-syn<0.0010.76<0.0010.73
iRBD versus converted<0.0011.77<0.0011.91
Non-syn versus converted<0.0012.73<0.0013.04
P valueCohen’s d
Posterior putamen (SBR) left versus rightNon-syn0.2320.16
iRBD0.3560.05
Converted0.3720.18
Anterior putamen (SBR) left versus rightNon-syn0.470<0.01
iRBD0.2640.05
Converted0.4730.13
Caudate (SBR) left versus rightNon-syn0.0060.33
iRBD<0.0010.22
Converted0.0200.48

  • Significant findings are shown in bold.

  • iRBD, isolated REM sleep behaviour disorder; SBR, specific binding ratio.