Online Interactive Courses on Loneliness and Quality of Life of Older Adults

The third version of UCLA compiled by Russel (1996) was used to measure "loneliness." It was translated into Chinese by Chang and Yang (1999) and included 20 questions. Each question was scored on the 4-point Likert Scale, with 1: "I never feel this way," 2: "I rarely feel this way," 3: "I sometimes feel this way," and 4: "I often feel this way." The total score ranged between 20 and 80, and the higher the score, the higher the participant's degree of loneliness. In this study, the Cronbach's alpha of the pre- and post-intervention UCLA was 0.76 and 0.78, respectively.

Developed by Sheikh and Yesavage (1986), GDS-SF comprises 15 Yes or No questions, with participants scoring 1 if answering "Yes" or 0 if answering "No." The 2-point scale (Yes/No) made the questionnaire easy to complete for the participants. The threshold of the scale was 7 points, with scores larger than 7 indicating a depression status. The total score ranged between 0 and 15, and the higher the score, the higher the degree of depression. In this study, the Cronbach's alpha of the pre- and post-intervention GDS-SF was 0.81 and 0.82, respectively.

Initially developed by Barrera Jr et al. (1981), ISSB was subsequently translated into Chinese and compiled into 8 questions by Ou (2013). The scale consisted of two categories, namely Emotional Support and Tangible Support. The total score of both categories represented the participant's satisfaction with social support. The scale was scored on a 5-point Likert Scale, with 1 representing "Strongly disagree," 2: "Disagree," 3: "Neutral," 4: "Agree," and 5: "Strongly agree." The total score ranged between 8 and 40, and the higher the score, the higher the participant's satisfaction with social support. In this study, the Cronbach's alpha of the pre- and post-intervention ISSB was 0.83 and 0.77, respectively.

The questionnaire was composed of questions on QOL formulated by the World Health Organization (WHO) based on the commonality of various cultures. The Taiwanese version of WHOQOL-BREF included 28 questions, each scored on a 5-point Likert Scale. It was composed of four domains, namely, Physical health (7 questions), Psychological health (6 questions), Social relationships (4 questions), and Environment (9 questions). The score of an individual question ranged between 1 and 5, and after conversion, the total score of each domain ranged between 4 and 20. The higher the score, the higher the individual's QOL. In this study, the Cronbach's alpha of the domains Physical health, Psychological health, Social relationships, and Environment before and after the intervention was 0.82 (0.80), 0.77 (0.79), 0.76 (0.81), and 0.82 (0.84), respectively.