Three-dimensional Virtual Reality and Horticultural Therapy

No intervention

VR is a realistic, three-dimensional, and virtual environment formed by a combination of computer software and hardware

To assess the health status of the elderly participants, we used the Chinese Health Scale (CHQ-12). This scale consists of 12 Likert-type items that are scored from 3 (not at all) to 0 (more than usual). The higher the score, the higher the level of general health.

The meaning in life questionnaire was adapted from the purpose in life (PIL) survey, and it consists of 9 Likert-type items. Each item is scored on a Likert-type scale from 1-5, with higher scores indicating a higher level of perceived meaning in life.

Perceived mattering was adapted from the General mattering Scale (GMS), and consisted of five items. Each item was scored on a Likert-type scale of 1(not at all) to 4(very much) with higher scores indicating a higher level of perceived mattering.

The short-form UCLA Loneliness Scale (ULS-6), which consists of six items, was used to measure loneliness. Each item was reversely scored on a Likert-type scale from 4 (never) to 1 (often), with higher scores indicating a lower level of perceived loneliness.

Using a Chinese version of the short-form of the Geriatric Depression Scale (GDS-15). The total raw score ranged from 0-15, with a higher score indicating a lower level of depression.