From: Quality of evidence in a post-Soviet country: evaluation of methodological quality of controlled clinical trials published in national journals from Uzbekistan
Kappa (κ)
Interpretation
< 0.00
Poor
0.00–0.20
Slight
0.21–0.40
Fair
0.41–0.60
Moderate
0.61–0.80
Substantial
0.81–1.00
Almost perfect