Objective:To construct the diagnosis scale for Qi stagnation and blood stasis syndrome (QSBSS)

and provide the basis for clinical diagnosis of QSBSS. Method:Through the ancient and modern literature analysis

we summarized the symptoms and signs of QSBSS and constructed an expert consultation questionnaire.After consulting 45 senior professional doctors and researchers

we made clear the form and content of the development of the diagnostic scale and designed a clinical research questionnaire for QSBSS patients.Then

we investigated 1 076 patients and collected their clinical data.Through several statistical analysis methods

including cluster analysis

principal component analysis

factor analysis

discrimination analysis

Spearman correlation coefficient

Logistic stepwise regression

receiver operating characteristic (ROC) curve

and expert consultation

we screened the scale items.Finally

we made the diagnosis scale by determining the boundary value and empowering. Result:The diagnosis scale contained 10 items

which were pain

emotional frustration

distending pain

scurry pain

chest distress

lumps in body

petechia in the tongue

purplish tongue

unsmooth pulse and deep pulse.The maximum score was 51.5 points and a score of 20 points could be diagnosed as QSBSS.The sensitivity of the scale was 80.35%

the specificity was 81.91%

and the accuracy rate was 80.94%. Conclusion:The diagnosis scale for QSBSS is universally suitable

and its sensitivity

specificity and accuracy rate reach the expected target

which can provide the basis for clinical diagnosis of QSBSS.