Table 2.

Gonioscopy “pooled” interobserver agreement for angle classification (kappa [95% confidence interval]).

Kappa [95% CI]	N	Agree			Disagree n (%)
		Overall n (%)	Narrow n	Open n
Visit 1
0.66 [0.50, 0.83]	86	73 (85%)	22	51	13 (15%)
Visit 2
0.69 [0.50, 0.89]	71	63 (89%)	13	50	8 (11%)

CI: confidence interval.

The kappa criteria were <0.2 poor; 0.21 to 0.40 fair; 0.41 to 0.60 moderate; 0.61 to 0.80 good; and >0.80 excellent.