Лазаров, Деян2025-04-152010http://research.bfu.bg:4000/handle/123456789/1829In paper we discuss the principles of missing values (MV) patterns and mechanisms. Using Labour Force Survey conduct in Bulgaria 2007 by National Statistical Institute we evaluate the MV mechanism among employed by permanence of job and we show that mechanism is Missing Not at Random.bgMissing ValuesMissing MechanismMissing patternLabour Force Survey.Анализ на механизма на липсващите стойности при наблюдението на работната сила в БългарияAnalizin the mechanism of missing values in labour force survey in BulgariaArticle