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Table 2 Grading criteria

From: Effective in-service training design and delivery: evidence from an integrative literature review

Design

Type of groups

Literature grade

Tier

Meta-analysis or systematic review

NA

1

 

Experimental

Between subjects (experimental and control)

2

1

Within subjects (crossover)

2

 

Quasi-experimental

Non-equivalent control group

3

 

Repeated measures

3

 

Pre-experimental

Comparison group

4

 

Pre-test/post-test

4

2

Post-test only

5

 
  1. NA not applicable.