Development and validation of the Yin deficiency scale

Area of Science:

• Integrative Medicine
• Traditional Chinese Medicine Diagnostics

Background:

• Yin Deficiency (YD) is a complex pathophysiologic pattern with diverse clinical manifestations.
• Accurate assessment of YD is crucial for effective treatment and understanding its relationship with other patterns.

Purpose of the Study:

• To develop and validate a new metric, the Yin Deficiency Scale (YDS).
• To establish an optimal cutoff point for the YDS.
• To investigate the associations between YD and Cold-Heat patterns.

Main Methods:

• The Yin Deficiency Scale (YDS) was administered to 169 outpatients and 83 college students.
• Internal consistency, construct validity, and concurrent validity of the YDS were assessed using statistical analyses.
• Clinician diagnoses and questionnaire data (YDQ, CHQ) were utilized for validation and pattern analysis.

Main Results:

• The 27-item YDS demonstrated satisfactory internal consistency (α=0.885) and concurrent validity.
• Principal component analysis identified eight factors, with specific symptom clusters relating to Heat or both Cold and Heat patterns.
• Receiver operating characteristic analysis yielded a sensitivity of 73.7%, specificity of 84.8%, and an area under the curve of 0.875, with an optimal cutoff score of 10.

Conclusions:

• The Yin Deficiency Scale (YDS) is a reliable and valid instrument for assessing Yin Deficiency.
• The findings support the YDS's utility in clinical settings for evaluating YD and its relationship with Cold-Heat patterns.