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H Mielniczuk

Publications and source records attributed to H Mielniczuk.

5 recordsLinked to original sources
PubMed1997

[Non-clinical factors in decision making about cesarean section].

Increasing cesarean-section rates have focused attention on variation in the use of this procedure that appear to be not only dependent of medical indication. This suggestion has been checked on the basis of newly implemented special forms in hospitals located in some areas of Poland in 1990. Documentation of 11.813 live births (almost 100% of live births in described area) has been analysed. It has been found 13.2% cesarean-section rate and 2.0% rate of other operative deliveries. Majority of cesarean sections have been medically indicated. But it has been also found that highest level of mothers education has been directly linked with higher rates of cesarean section. This linkage has been stronger than any other association (with age, parity etc.). Poland as a country, is divided for several regions subordinated to particular hospitals. It has been found that some of the patients have been admitted not to regional hospitals. We conclude that cesarean section rate among these patients was higher than this same ratio among all other patients admitted for deliveries in these hospitals. This association cannot be accounted for by differences in maternal age, parity, birth weight etc.

Cesarean Section↗
PubMedDate not supplied

[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.

Adolescent↗
PubMedDate not supplied

[Evaluation of the possible use of the National Cancer Registry for survival analysis of children and youth with selected malignant neoplasms--tumors in 1990-1995 in Poland].

This paper is the continuation of previous research described in the article "Evaluation of the possibility of using the National Cancer Registry in survival analysis of children and youth with selected malignancies-leukaemias and lymphomas in 1990-1995 year in Poland" on the basis of the National Cancer Registry data concerning tumours. Tumours comprise 62.0% of total number of cases and 56.6% of total number of deaths from cancer in children and youth. Modern methods of statistical analysis such as Cox regression and Kaplan-Meier survival curves method have been used. The conclusion formulated in the previous paper is still valid. Despite the fact that the Registry is not designed for survival analysis, they are possible and are the basis of many important findings. The crucial factor for the value of the Register in the time of advanced statistical analysis and computer methods is organisation of the Registry and data quality. 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 it from 2 to 5 years the period of observation. The leading clinical conclusions are: lack of improvement in prognosis in the 6 years period 1990-1995 and crucial importance of early diagnosis of oncological disease for survival time. Further clinical conclusions concerning the impact of treatment cannot be stated on the basis of the Registry data.

Adolescent↗