To find the related syndrome factors of gouty arthritis with blood stasis syndrome by mathematical methods of set pair analysis and connection number so as to guide the diagnosis.
Seventy gouty arthritis patients diagnosed with blood stasis syndrome were analyzed according to priority by the method of connection number. Syndrome factors of gouty arthritis with blood stasis syndrome were selected according to the numerical values of dialectics connection value (DCV).
In the nine observed items, the DCVs of five syndrome factors were above 0.5. These five factors were pain (0.858 0), sublingual varices and positive signs (varices and dark purple color) for palatal mucosa (0.773 1), tophus (0.723 0), varicose veins and telangiectasis (0.700 9), and squamous and dry skin (0.612 3). The DCVs of the other factors were below 0.5.
The main factor 1 is pain; factor 2 is sublingual varices and positive signs (varices and dark purple color) for palatal mucosa; factor 3 is tophus; factor 4 is varicose veins and telangiectasis; factor 5 is dry skin. The others are secondary factors.