RESUMEN
The pre-internship is the most important examination of the Medical students, which can assess their professional abilities. The present research has described some important factors, about these exams. This study was done in 2002 on 99 medical students who participated in the examinations in September and Mars 2001. For the analysis, the scores of 13 courses of the stagery periods, the final scores [pre-internship and basic sciences] and some demographic factors were collected. To analyze t-test, ANOVA, Pearson's correlation coefficient and linear regression were used. The participants and failed students were 35 and 9 in September and 64 and 10 in Mars examinations respectively. The mean scores of examinations were significantly different [p=0.034]. The means of the pre-internship examinations for sex and quota system [Sahmieh] were significantly different in September and total, the means for marital status have significant differences only in Mars, and the means for the age in both examination and total were significantly different. Furthermore, the mean scores of Eye and Infectious disease, the means of different periods, and the final scores were significantly different between pass and fail students in both examinations. In September, the highest correlation between pre-internship scores and the courses or the means are for eye and infectious disease, and the mean of stagery period. In Mars examination, the highest correlation between pre-internship scores and the courses or the means, belongs to the means of stager and physiopathology periods and the final basic sciences score respectively. Also the regression equation for the pre-internship score was calculated. The variables of age, marital statues, quota system and sex, the mean of three periods and the score of eye and infectious disease are the important variables which more associated to the scores of the pre-internship examinations