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The problem of premature infants is well recognized in Russia and all over the world. The article discusses the mortality level and structure of extremely premature infant during 2015–2019. The aim of the study was to identify significant cause-effect relations for high mortality of premature infants and infants with extremely low body weight (ELBW) according to reports from obstetric departments, pediatric outpatient clinics, children's hospitals, statistical agencies, queries results from Territorial Compulsory Medical Insurance Fund (TCMIF) in Saint Petersburg and Russian Association of Human Reproduction (RAHR). The main demographic indices are presented by the Petrostat association. Russian Federal State Statistics Service (Rosstat) forms provided by the Center for Analysis and Prediction of Maternal and Child Health of the Saint Petersburg Health care Committee (No. 32 “Information on medical care for pregnant women, women in labour and new mothers” (approved by order of Rosstat No. 591 of 27.11.2015); No. 19 “Information on children with disabilities” registered in children's clinics (approved by order of Rosstat No. 866 of 27.12.2016); No. 14 “Information on the activities of medical facilities units providing inpatient medical care” (approved by order of Rosstat No. 723 of 05.12.2014); No. 30 “Information on the medical facility” (approved by order of Rosstat No. 483 of 03.08.2018 “On the approval of statistical tools for the organization of federal statistical observation in the field of healthcare by the Ministry of Health of the Russian Federation”) presented by Saint Petersburg Medical Informational and Analytical Center (MIAC)), and answers from TCMIF in Saint Petersburg and RARCH have been investigated. The authors have analyzed the fertility and mortality rates of premature infants, the group of children with ELBW has been established. High mortality levels have been revealed in the first weeks of life (22–23), they were mainly associated with infectious processes. The authors associate the premature delivery increase with the widespread implementation of assisted reproductive technology (ART). ART can be performed either via compulsory medical insurance funds, or other non-government sources. The assumption was proposed that there are possible violations of ART indications, contraindications, and the number of procedures. The ART efficacy is difficult to estimate as well due to insufficient information provided by Rosstat report form No. 32. The need of implementation of the new statistical form that will cover the data on the of ART administration, the possibility of efficacy estimation of modern invasive methods for infertility treatment and mandatory submission of reports about the use of these methods by medical facilities is discussed.

The study estimated outcomes of 22–27 weeks of pregnancy according to the analysis of new statistic forms. The official statistic data on births and deaths of children with extremely low body weight in Russian Federation, federal Districts and Subjects in 2009 were used in this work. Mortality decreased in children 750–999 g and in a less degree in children 500–749 g. Dynamics of results showed the necessity of development and delivery to health care institutions of Russian Federation the new forms of statistic reports for monitoring, analysis and improvement of health care quality in delivery and management of extremely premature infants.

The study estimated outcomes of 22–27 weeks of pregnancy according to the analysis of new statistic forms. The official statistic data on births and deaths of children with extremely low body weight in Russian Federation, federal Districts and Subjects in 2009 were used in this work. Mortality decreased in children 750–999 g and in a less degree in children 500–749 g. Dynamics of results showed the necessity of development and delivery to health care institutions of Russian Federation the new forms of statistic reports for monitoring, analysis and improvement of health care quality in delivery and management of extremely premature infants.