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 toss for English Language Learners. : 1  to throw (something) with a quick, light motion. : 2  to move or lift (something, such as a part of your body) quickly or suddenly. : 3  to move (something) back and forth or up and down.