| Sumario: | Objective: Through establishing mathematics model of nursing human resources allocation quantity and therapeutic intervention scoring system - 28 (TISS- 28), to provide basis for the rational and effective allocation of intensive care (ICU) nursing human resources. Method: A total of 133 cases of patients randomly selected in five weeks of the ICU were evaluated by TISS - 28 score and nursing time, by a simple linear correlation analysis and simple linear regression analysis to establish TISS - 28 grading and the relationship between the direct nursing time model, and further to establish nursing human resources allocation quantity and TISS -28 mathematical model of grading by nursing human resources allocation quantity formula. Results: The higher the TISS- 28 score was, the more hours of direct care required. Pearson's correlation coefficient between direct nursing time and TISS-28 score was 0. 811, had a linear positive correlation. The model of nursing human resource allocation quantity and TISS - 28 was: the number of nurses required ... Conclusions: The mathematical model between the number of nursing human resource allocation and the TISS-28 score could effectively, simply and quickly predict the number of nursing personnel required by ICU.
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