title: [Predictive value of a questionnaire for epidemiologic studies].
abstract: Combined surgical treatment was carried out in 29 cases of non-organ retroperitoneal tumors due to extensive involvement of adjacent organs. Postoperative mortality was 3.4 +/- 3.3%. Three-year survival was 51.2 +/- 10.3% and 5-year survival-47.1 +/- 10.10%.
authors.forename: L I
authors.initials: LI
authors.lastname: Nekrasova
mesh_terms: D016022:Case-Control Studies; D004812:Epidemiologic Methods; D005502:Food; D006801:Humans; D011237:Predictive Value of Tests; D011795:Surveys and Questionnaires / Q000592:standards*
vernacular_title: Informativnost' ankety-oprosnika dlia epidemiologicheskikh issledovaniĭ.