Appendix 2.3 Framework for assessing
Weight of Evidence B
|
Maryland Scale score |
WoE B |
|
Level 5
Randomised controlled trial with cluster or individual
allocation of multiple individuals/clusters into groups. |
High |
|
Level 3
Cluster randomised trial with only one cluster in each
arm OR non-random cluster OR non-equivalent control
group pre and post test design where outcome = change
in pre/post-test score (with no other adjustment in
analysis).
Level 4
Non-random controlled trial where groups are
demonstrated to be equivalent on important variables
(includes studies where post-hoc analysis used to create
equivalent groups e.g. path analysis or structural
equations modelling adjustment in analysis) |
Medium |
|
Level 2
Single group pre- and post- test OR non-equivalent
control group (with no adjustment in analysis)
Level 1
Single group single point (post-test only or correlational
study) |
Low |
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