Skip to main content

Table 1 Grading criteria

From: An integrative review and evidence-based conceptual model of the essential components of pre-service education

Design Types of groups Literature grade Tier
Meta-analysis   1 1
Systematic or integrative review of literature   1
Experimental Between subjects (experimental and control) 2
  Within subjects (cross-over) 2
Quasi-experimental Non-equivalent control group 3 2
  Repeated measures 3
Pre-experimental Comparison group 4
  Pre-test/post-test 4
  Post-test only 5
Descriptive studies Retrospective 6 3
  Case series, correlation 6
  Prospective/cross-sectional 6
  Literature review (descriptive) 6
Qualitative studies   7