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. 2022 Apr 1;22(2):3. doi: 10.5334/ijic.6002

Table 3.

Evidence quality of included studies.


LEVEL DESCRIPTION #

A1 Systematic review
Review of data from multiple RCT studies 0

A2 Randomized trial
Comparative study with (random) intervention and control group design 0

B Controlled study
Trial with intervention and control group and comparisons on outcome
B1 Multiple measurement points 60
B2 One measurement point 5

C Non-controlled study
C1 Multiple case, multiple measurement points 4
C2 Multiple case, one measurement point 1
C3 Single case, multiple measurement points 4
C4 Single case, one measurement point 2

D Descriptive, non-analytical 0
D1 Multiple projects 0
D2 Single project 0
D3 Literature review 0