Table 2.

Distributions of angle status and grades by cohort and dataset

	CHES Train (N=3396) (%)	CHES Test (N=640) (%)	Singapore (N=10165) (%)	USC (N=300) (%)
Angle Status
Closed	1764 (51.9)	329 (51.4)	570 (5.6)	66 (22.0)
Open	1632 (48.1)	311 (48.6)	9595 (94.4)	234 (78.0)
Gonioscopy Grade
0	808 (23.8)	149 (23.3)	196 (1.9)	30 (10.0)
1	956 (28.2)	180 (28.1)	374 (3.7)	36 (12.0)
2	360 (10.6)	65 (10.2)	1174 (11.5)	32 (10.7)
3	898 (26.4)	175 (27.3)	3718 (36.6)	80 (26.7)
4	374 (11.0)	71 (11.1)	4703 (46.3)	122 (40.7)