[Evaluation of the possibility of using the National Cancer Registry for survival analysis of children and youth with selected malignancies--leukemias and lymphomas during 1990-1995 in Poland].
There are about 1400 new cases of cancer and almost 600 deaths from cancer a year in children and youth aged between 0-19 in Poland. Leukaemias and lymphomas comprise 37.8% of the total number of cases and 43.3% of the total number of deaths from cancer. The National Cancer Registry is the unique data source of the incidence of cancer as well as further health information in particular the fact of death. In this research, pioneer attempt of using Registry data to conduct survival analysis in children and youth with leukaemias and lymphomas has been undertaken. Cox regression and Kaplan-Meier survival curves methods were used. Organizational and clinical conclusions have been formulated. Organizational conclusions concern mainly the principles of conducting the Registry namely introducing of International Classification of Diseases for Oncology (ICD-O) and extending the period of observation from 2 to 5 years. The leading clinical conclusions are: lack of improvement in prognosis in the 6 years period from 1990 to 1995 and crucial importance of early diagnosis of oncological disease for survival time. Further clinical conclusions concerning the impact of treatment cannot be made on the basis of the Registry data.
Mielniczuk
H
H
Zakład Zdrowia Publicznego i Medycyny Szkolnej, Instytut Matki i Dziecka w Warszawie. imid@imid.med.pl
Borkowski
W
W
Szymborski
J
J
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D015994:Incidence; D007223:Infant; D007231:Infant, Newborn; D007938:Leukemia / Q000175:diagnosis / Q000453:epidemiology / Q000401:mortality*; D008223:Lymphoma / Q000175:diagnosis / Q000453:epidemiology / Q000401:mortality*; D008297:Male; D011044:Poland / Q000453:epidemiology; D012042:Registries; D012044:Regression Analysis; D017678:Sex Distribution; D016019:Survival Analysis