tailieunhanh - Management of chronic venous leg ulcers

Motivation and the resources for carrying out an attack make humans potentially dangerous threat-sources. Table 3-1 presents an overview of many of today’s common human threats, their possible motivations, and the methods or threat actions by which they might carry out an attack. This information will be useful to organizations studying their human threat environments and customizing their human threat statements. In addition, reviews of the history of system break-ins; security violation reports; incident reports; and interviews with the system administrators, help desk personnel, and user community during information gathering will help identify human threat-sources that have the potential to. | SIGN. Scottish Intercollegiate Guidelines Network Part of NHS Quality Improvement Scotland NHS Quality Improvement Scotland Management of chronic venous leg ulcers 120 A national clinical guideline August 2010 KEY TO EVIDENCE STATEMENTS AND GRADES OF RECOMMENDATIONS LEVELS OF EVIDENCE 1 High quality meta-analyses systematic reviews of RCTs or RCTs with a very low risk of bias 1 Well conducted meta-analyses systematic reviews or RCTs with a low risk of bias 1- Meta-analyses systematic reviews or RCTs with a high risk of bias 2 High quality systematic reviews of case control or cohort studies High quality case control or cohort studies with a very low risk of confounding or bias and a high probability that the relationship is causal 2 Well conducted case control or cohort studies with a low risk of confounding or bias and a moderate probability that the relationship is causal 2 - Case control or cohort studies with a high risk of confounding or bias and a significant risk that the relationship is not causal 3 Non-analytic studies eg case reports case series 4 Expert opinion GRADES OF RECOMMENDATION Note The grade of recommendation relates to the strength of the evidence on which the recommendation is based. It does not reflect the clinical importance of the recommendation. A At least one meta-analysis systematic review or RCT rated as 1 and directly applicable to the target population or A body of evidence consisting principally of studies rated as 1 directly applicable to the target population and demonstrating overall consistency of results B A body of evidence including studies rated as 2 directly applicable to the target population and demonstrating overall consistency of results or Extrapolated evidence from studies rated as 1 or 1 C A body of evidence including studies rated as 2 directly applicable to the target population and demonstrating overall consistency of results or Extrapolated evidence from studies rated as 2 D Evidence level 3 or 4 or Extrapolated