Loneliness inventory for older adults: Psychometric evaluation of the Turkish version

This methodological study aimed to adapt the Loneliness Inventory for Older Adults (LIOA) into Turkish and to evaluate its validity and reliability. The sample consisted of 384 older adults who presented to a family health center in Turkey between May and December 2024. Data were collected using a Personal Information Form, the LIOA, and the UCLA Loneliness Scale Version 3. The Turkish version of the LIOA revealed a five-factor structure comprising 29 items, with factor loadings between 0.794 and 0.903. Goodness-of-fit indices indicated an excellent model fit (χ2/df = 1.564, CFI = 0.978, GFI = 0.908, NFI = 0.943, IFI = 0.978, TLI = 0.976, RMSEA = 0.038, SRMR = 0.039). The Cronbach’s alpha coefficient for the total scale was 0.951, and item-total score correlation coefficients ranged from 0.494 to 0.725. These findings demonstrate that the Turkish version of the LIOA is a valid and reliable instrument for assessing loneliness among older adults.