[Retention of knowledge. III--Gynecology program].

The authors present the result of an educational investigation of knowledge retention concerning a Gynecology program. The research was developed by comparing the marks obtained in the fourth, fifth and sixth years. The examinations had the same content but were not identical. Between the fourth and fifth year, the loss of knowledge observed was -45.0% +/- 1.4% (average +/- standard error) and was not influenced by the time between the two examinations. The examinations between the fifth and sixth years indicated a gain of knowledge of +72.8% +/- 11.1% (average +/- standard error) and was influenced by the time between the two examinations.