Level of Evidence of Dental Research in Saudi Arabia (2000–2020)

Table 3

Interpretation of kappa values by Landis and Koch scale.

Kappa statistics	Strength of agreement
<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