Purpose: To explore a possible method of improving prediction by analyzing the effect and influencial factors of difficulty prediction of a national board dental examinations.
Methods: The correlation between the predicted value and the measured value, and related influential factors were analyzed with SPSS 16.0 software package.
Results: The correlation between the predicted difficulty and the tested difficulty increased after the improvement of the method (P＜0.05). The correlation was mainly reflected in the median score group of candidates.
Conclusions: Improving the method of difficulty prediction can increase the prediction effect, and it is helpful to improve the forecasting ability of the test paper and to evaluate the candidates accurately.