Evidence is insufficient because of: 1  The limited number or size of studies. 2  Important flaws in study design or methods. 3  Inconsistency of findings across individual studies. 4  Gaps in the chain of evidence. 5  Findings not generalizable to routine primary care practice. 6  Lack of information on important health outcomes.
Definition of jerk for English Language Learners. : 1  a stupid person or a person who is not well-liked or who treats other people badly. : 2  a quick pull or twist. : 3  a sudden sharp movement.
Definition of pull for English Language Learners. : 1  the act of moving or trying to move something by holding it and bringing it toward you : the act of pulling something. : 2  special influence and power over other people. : 3  an ability or power to attract someone or to make someone want to go somewhere, do something, etc.