Abstract

ObjectivesThis study aimed to examine the validity and reliability of a rapid, clinically administrable loneliness screening tool for older adults called the ALONE scale.DesignThis was a cross-sectional study.SettingParticipants were recruited from either ambulatory clinics or a nursing home.ParticipantsParticipants were 65 years of age or older and had SLUMS scores of 14 or greater.MeasurementsConstruct validity of the 5-item ALONE scale was examined through correlation with the previously validated UCLA-20 Loneliness Questionnaire. Divergent validity for discriminating between loneliness and depression was examined through correlation with the PHQ-8 items. Test-retest reliability was assessed by correlation between baseline ALONE scores and those from re-administration in 2–3 weeks.ResultsAmong ambulatory clinic participants (n=199), the ALONE scale showed strong correlation with the UCLA-20 (r=0.81, p < 0.001). Similar correlation coefficients were seen among demographic subgroups: White Americans (n=123) (r=0.81, p < 0.001), Black Americans (n=66) (r=0.79, p < 0.001), adults ≥ 75 years (n=74) (r=0.86, p < 0.001). Among nursing home patients (n=22), the ALONE scale showed fair correlation with the UCLA-20 (r=0.74, p < 0.001). Test-retest of the ALONE scale showed a strong correlation (r=0.89, p < 0.001). ROC curve analysis determined ALONE scale scores of 8 and greater as optimal for severe loneliness screening.ConclusionThis study shows that the ALONE scale has strong validity in assessing older adults for severe loneliness. The brief, comprehensible nature of the ALONE scale reduces adoption burden making it optimal for use in clinical settings.

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