Table 2

Anchor-based minimum clinically important difference on SF-DEM scale

DomainNImpression of social functioning*N per impression of social functioningMean SF-DEM scoreSpearman’s Correlation: SF-DEM score vs impression of social functioningP valueMean SF-DEM points difference per impression of social functioning (Anchor-based MCID)
1 (Spending time with other people)296Excellent79.4−0.58<0.0011.7
Good779.8
Fair937.3
Poor1194.4
2 (Communicating with other people)291Excellent79.7−0.29<0.0011.7
Good787.7
Fair925.5
Poor1144.8
3 (Sensitivity to other people)293Excellent710.4−0.130.0250.9
Good808.5
Fair938.8
Poor1137.7
  • *Response to question ‘Thinking about their social life as a whole, how is it now?’ on Likert scale (1=excellent, 2=good, 3=fair, 4=poor).

  • MCID, minimum clinically important difference; SF-DEM, Social Functioning in Dementia Scale.