Table. 2.

Qualitative Level of Research (N=7)

Levels of evidence Research type n (%)
I System review 0 (0.0)
Meta-analysis 0 (0.0)
RCT 0 (0.0)
II Two groups non-randomized 0 (0.0)
III One groups non-randomized 1 (14.3)
IV Intervention study 0 (0.0)
Survey 6 (85.7)
V Case study 0 (0.0)
Literature review 0 (0.0)
Qualitative study 0 (0.0)
Korean J Occup Health Nurs 2020;29:192~201 https://doi.org/10.5807/kjohn.2020.29.3.192
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