RESUMO
Objective To compare predictive power for deep vein thrombosis among hip and knee joint replacement patients using Autar scale and Wells scale.Methods Convenience sampling method was used.Totally 331 patients from ten tertiary hospitals receiving hip and knee joint replacement were recruited.General information questionnaire,Autar scale and Wells scale were used to collect data.Telephone follow-up was performed at 2 weeks,1 month and 3 months after hospital discharge.The primary endpoint of follow-up was occurrence of DVT,and the secondary endpoint was no occurrence of DVT within 3 months after hospital discharge.Results The Cronbach's α coefficients of Autar scale ranged from 0.716 to 0.762 for scores 24h before operation,24h after operation and at the day of discharge,and those of Wells scale ranged from 0.580 to 0.603.The area under the ROC curve of Autar scale ranged from 0.726 to 0.798.The area under the ROC curve of Wells scale ranged from 0.568 to 0.628.Conclusion The predictive power of Autar scale was higher than that of Wells scale which enabled Autar scale to better predict deep vein thrombosis for patients receiving hip and knee joint replacement.
