Data extracted from comparable studies in companionship studies
| Companionship Loneliness scores | |||||||||
| Study | Number of subjects | Outcome scale | Control | Intervention | P value | ||||
| Mean baseline score (SD) | Mean follow-up score (SD) | Change in mean score | Mean baseline score (SD) | Mean follow-up score (SD) | Change in mean score | ||||
| Banks et al 30 | 38 | UCLA LS | – | – | 5.7 (1.3) | – | – | −6.0 (2.7) | <0.05* |
| Robinson et al 31 | 34 | UCLA LS | – | – | 3.8 (10.3) | – | – | −9.0 (12.6) | 0.03* |
| Kanamori et al 7 | 5 | AOKLS | – | – | – | 3.3 (2.2) | 1.0 (1.3) | – | <0.05† |
*Study compares change in mean score from baseline to follow-up in control group to change in mean score from baseline to follow-up in intervention group.
†Study compares mean baseline score in intervention group to mean follow-up score in the intervention group.
AOKLS, Ando Osada and Kodama Loneliness Scale; UCLA LS, University of California Los Angeles Loneliness Scale.