Rosacea (roe-ZAY-she-uh) is a common skin condition that causes redness and visible blood vessels in your face. It may also produce small, red, pus-filled bumps. These signs and symptoms may flare up for a period of weeks to months and then diminish for a while.
1 Publication biasâthe practice of selectively publishing trial results that serve an agendaârepresents a systematic flaw of the scientific basis of medicine.  Bias includes publishing positive results but not the negative ones, not publishing retractions of fraudulent studies, and funding bias.
Attrition bias is a kind of selection bias caused by attrition (loss of participants), discounting trial subjects/tests that did not run to completion. It is closely related to the survivorship bias, which only the subjects that survived a process are included in the analysis.election bias is closely related to: 1  publication bias or reporting bias, the distortion produced in community perception or meta-analyses by not publishing uninteresting (usually negative) results, or results which go against the experimenter's prejudices, a sponsor's interests, or community expectations.