A Pilot Randomized Controlled Trial to Examine the Impact of a Therapy Dog Intervention on Loneliness in Hospitalized Older Adults

Background and Objectives Loneliness is linked to significant health threats and is potentially more dangerous than obesity; it affects as many as 29% of noninstitutionalized older adults. Loneliness is exacerbated for those who require inpatient rehabilitation, are displaced from their social networks, spend little time receiving therapy, and are physically inactive and socially isolated. Emerging evidence suggests that companion animals provide a number of health and well-being benefits and that interacting with a trained therapy dog may reduce loneliness.Research Design and Methods Older adult (59+ years) medical inpatients (N = 42) were randomly assigned to receive 1 of 3 conditions: dog and handler interaction (animal-assisted interaction [AAI]), handler only conversational control (CC), or usual care (UC) for 20 min per day over 3 days. The UCLA Loneliness Scale (UCLA-LS) and Short Form (UCLA-SF) as well as an analog rating scale were used to assess loneliness. Linear mixed models with random intercepts were applied to examine differences in the changes from before to after the conditions.Results Changes in the UCLA-SF [t (200.356) = 1.851, p = .033] and the analog loneliness scale [t (194.407) = 2.651, p = .004], differed significantly between the AAI condition and the UC conditions but not between the CC and UC conditions (p = .175). Trajectories of changes in loneliness showed more improvement in the AAI than in the UC condition.Discussion and Implications These results indicate that AAI was effective for reducing loneliness in hospitalized older adults. Human handler only visits did not result in similar findings, indicating that there is something unique and beneficial about the presence of the dog.Clinical Trial Registration NCT05089201