A One-year Trajectory of Depression Status Changes in Older Adults With MCI and SD: a Longitudinal Cohort Study

Using a self-made general information scale, such as age, gender, education level, and other basic personal information

Montreal Cognitive Assessment (MoCA) is an assessment tool used for rapid screening of mild cognitive impairment. The total score is 30 points, and the higher the score, the better the cognitive function of the research subject. Literacy group ≤ 13 points, primary school group ≤ 19 points, and middle school and above group ≤ 24 points can be judged as cognitive impairment.

The Activities of Daily Living (ADL) scale adopts a Liket four level rating. The evaluation results can be analyzed based on total score, dimension score, and individual score. A total score of 20 is considered completely normal, while a score above 20 indicates varying degrees of functional decline. A score of 1 for each item indicates normal functionality, while a score of 2-4 indicates decreased functionality.

The Self Rating Anxiety Scale (SAS) has a total of 20 items, of which 5, 9, 13, 17, and 19 items are scored in reverse. The scale adopts a 1-4 level scoring method (1 point for no or very little time; 2 points for a small portion of time; 3 points for a considerable amount of time; 4 points for the vast majority or all of time). Individuals fill in the scale based on their own situation in the most recent week, multiply the calculated total score by 1.25, take an integer as the standard score, and use it as a statistical indicator. The higher the standard score, the more severe the anxiety level of the individual.

The Social Support Rating Scale (SSRS) includes three dimensions: objective support, subjective support, and support utilization, with a total of 10 items: 1 point (none) to 4 points (full support). The higher the score in each dimension, the more support received.

The Lubben Social Network Scale (LSNS-6) is used to measure the structural characteristics of individual family and friend networks, as well as the supporting functions played by the network, in order to reflect the social network level of the respondents. It consists of two parts: the home network and the friend network, each with three items, totaling six items. Each entry has 5 options, with a score of 0-5 points and a total score of 0-30 points. The higher the score, the higher the level of social network, and<12 points indicates insufficient social network.

The Pittsburgh Sleep Quality Index (PSQI) has a total of 19 items, divided into 7 components: subjective sleep quality, time to fall asleep, sleep time, sleep efficiency, sleep disorders, hypnotic drugs, and daytime function. The higher the total score, the worse the sleep quality.

The Corner Davidson Resilience Scale (CDRISC) consists of 10 items and uses the Likert 5-point scoring system. A score of 0-4 indicates "never", "rarely", "sometimes", "often", and "always", with higher scores indicating higher levels of psychological resilience.