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 buck. 1  transitive verb. 2  1a archaic : 1buttb : oppose, resist bucking the system. 3  2 : to throw (as a rider) by bucking.  3 : to charge into (as a 1  headwind) 4a : to pass especially from one person to anotherb : to move or load (as heavy objects) especially with mechanical equipment.  intransitive verb.