The findings of statistical processing of data about the patients with second primary tumors (Preliminary communication)
Objective: To perform a reconnaissance statistic analysis of electronic data from the records of the patients with second cancers and patients with late metastatic tumors. Material and Methods: The records of the patients with second cancers and patients with late metastatic tumors treated at S.P. Grigоriev Institute of Medical Radiology (National Academy of Medical Sciences of Ukraine) within the period of 1980-2003 were selected and converted to an electronic form Primary statistical analysis of the accumulated information was performed using the methods of nonparametric statistics and Statistica software. Results: The longest period of time between the first and second cancers was determined. A hypothesis about the nosological forms of the first tumor which most frequently resulted in second tumors was generated. By means of comparison of the group with second cancers and the group with metastatic tumors, suggestions about continuation of the disease at involvement of the paired organ, dependence of the second cancer on the age of the patients, the influence of hemotransfusion, radiation and chemotherapy on metachronic tumor development were made. Conclusion: The use of contemporary information technologies and approaches of evidence-based medicine allowed obtaining additional information from the traditional database, namely, about the course of the disease which is present in the patient’s records.