[Estimation and evaluation of the long-term results of vagotomy]

The authors call attention to difference in methods of the calculation and assessment of recurrences of ulcers and disorders resulting from surgery and associated with digestive organs. The authors stress that it is necessary to take into account the incidence of recurrent ulcers appearing at strictly definite terms after operation. The method of obtaining information from the patient, problems of its estimation due to inevitable subjectiveness of the patient and the physician as well as means to reduce the influence of the subjectiveness on the conclusions of the investigations performed are considered.