Efficacy and Safety of Toludesvenlafaxine Hydrochloride Sustained-release Tablets Versus Venlafaxine Hydrochloride Sustained-release Tablets in Patients With Major Depression Disorder

The SHAPS is a well-validated 14-item self-report questionnaire commonly used to assess anhedonia. Each item on the SHAPS is worded so that higher scores indicate greater pleasure capacity. A total score can be derived by summing the responses to each item. Each item is rated as either 0 or 1, for a total score between 0 and 14, with higher scores corresponding to higher levels of anhedonia.

Snaith-Hamilton Pleasure Scale (SHAPS) Reductive Rate(%) = (pre-treatment score - post-treatment score)/pre-treatment score ×100%. SHAPS Reductive Rate(%) ≥75% is recovery, 50% ~ 74% is significantly effective, 25% ~ 49% is effective, and < 25% is ineffective.

DARS is a 17-item self-report questionnaire that is designed to assess anhedonia in major depressive disorder (MDD), and particularly to increase scale generalizability while maintaining specificity. Respondents provide their own examples of rewarding experiences across the domains of hobbies, social activities, food/drink, and sensory experience. Participants answer a set of standardized questions about desire, motivation, effort, and consummatory pleasure with a recall period of "right now" for the examples provided. The instrument is scored as a total sum of all items (range 0-68) with higher scores reflecting increased motivation, effort and pleasure (that is, less anhedonia).

The MADRS is a clinician-rated scale designed to measure depression severity and detects changes due to antidepressant treatment. The scale consists of 10 items, each of which is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score of 60. Higher scores represent a more severe condition.

HAM-D17 has been the gold standard for the assessment of depression. The score needs to be based on clinical interviews, and the time frame of the assessment is usually the situation in the previous week. Most items use a 5-point scale of 0 to 4. The standard of each level is: 0 indicates none, 1 indicates mild, 2 indicates moderate, 3 indicates severe, and 4 indicates extremely severe. A few items adopt the 3-level scoring method with 0~2 points, and the grading standard is: 0 indicates none, 1 indicates mild to moderate and 2 indicates severe.

SDS is composed of three self-rating dimensions, which assess functional status in work, social life/leisure activities, and family life/family responsibilities. Each dimension is scored on a scale of 0 to 10, with 1 to 3 indicating mild impairment, 4 to 6 indicating moderate impairment, 7 to 9 indicating significant impairment, and 10 indicating extreme severity. The three dimensions can also be added together to reflect the overall functional deficiency. The score ranges from 0 to 30, with 0 indicating no damage and 30 indicating significant damage.

Q-LES-Q-SF consists of 16 self-rated items. Each item is divided into five grades: 1 indicates very dissatisfied, 2 indicates dissatisfied, 3 indicates average, 4 indicates satisfied, and 5 indicates very satisfied. The higher the score, the better the happiness and quality of life satisfaction of the subjects. The first 14 items are used to generate an overall score, while the remaining 2 items are individual items that measure satisfaction and overall quality of life related to the study drug.