The authors presented a letter on the article by Hao et al. published in the September 2015 issue of Circulation Journal.
Yulia V. Popova, Alexey S. Korotin Clinical predictors of refuse from percutaneous coronary intervention in patients with acute myocardial infarction: which factors are really matters? // Russian Open Medical Journal, Vol. 5, Issue 1, 2016, pp. 0-0

The purpose of this work is to define the clinical and social predictors of headaches in children and adolescents. Material and Methods. We performed clinical examination of children and adolescents, which included studying their symptoms, anamnesis, somatic and neurological objective signs, survey using our original questionnaire and survey in the framework of an international project to study headaches «World Children and Adolescent Headache Project». The type of headache was diagnosed using international diagnostic criteria of the International Classification of Headache Disorders, 3rd edition (beta release). As a result of our study, we obtained the data about the most significant lifestyle factors (among those studied) influencing the number of days with headache per month, calculated linear coefficients and a predicting mathematical model for children. The sensitivity of the model for the prognosis of chronic tension type headache is 63%, specificity — 81 %. Conclusion. In this paper we describe criteria for the prognosis of primary headaches in patients aged from 8 to 18 years old.
Akhmadeeva L.R., Valeeva D.S., Veytsman B.A., Akhmadeeva E.N. Headache in pediatric practice: multifactor analysis of clinical and social predictors // Saratov Journal of Medical Scientific Research, Vol. 11, Issue 4, 2015, pp. 548-551

The research goal is to study the spread of completed and uncompleted suicides in the Saratov region during the period of 2001-2010, and influence of unemployment and alcohol abuse on suicidal behavior of the population in the most unfavourable areas of the region. To conduct the research elaborated questionnaires, describing suicidal and drug situations in the Saratov region during 2001-2010, and the reports of the Ministry of Employment, Labour and Migration in the Saratov region were used. Results: Areas with the highest rate of suicidal activity during 2001-2010 were identified (Balakovo, Engels, Dukhovnitsky, Pugachev, Perelub and Arkadak). In each of these areas correlation between the level of suicide and alcoholism and unemployment levels of the population were established. The research results allowed identifying some predictors of suicidal behavior for the specific area. These predictors will be included in «The Map of the predictors of suicide risk in the Saratov region». It improves assistance in suicidal situations and reduces suicides
Bachilo Е. V., Barylnik Yu.B. Impact of unemployment and alcoholism on suicidal activity in the Saratov region // Saratov Journal of Medical Scientific Research, Vol. 7, Issue 3, 2011, pp. 673-676

The article presents the research results on the role of leading clinical predictors in follow-up prognosis for patients with ischemic heart disease. The inefficiency of socialization in a non-terminal condition is formed by means of insufficiency of somatic, psychological and social resources in patients. Thus clinical predictors have no significant value
Osipov D.A., Rozhdestvenskaya T.V., Krom I.L., Rebrov A.P. Correlation of predictors of life quality prognosis of patients with coronary heart disease // Saratov Journal of Medical Scientific Research, Vol. 7, Issue 2, 2011, pp. 426-429