Table 1.

Characteristics of the study cohort.

Distribution of workers by age at hire at the facility
Age at hire, years	Males		Females		Both sexes
	Number	%	Number	%	Number	%
<20	5399	32.4	771	13.5	6170	27.6
20–24	5863	35.1	2000	35.2	7863	35.1
25–29	2607	15.6	1108	19.5	3715	16.6
30–34	1103	6.6	632	11.1	1735	7.8
35–39	816	4.9	608	10.7	1424	6.4
≥40	900	5.4	570	10.0	1470	6.5
Total	16,688	100.0	5689	100.0	22,377	100.0
Distribution of workers by age at POAG diagnosis
Age at diagnosis, years	Males		Females		Both sexes
	Number	%	Number	%	Number	%
<50	20	5.5	4	2.3	24	4.4
50–59	77	20.9	9	5.2	86	15.9
60–69	165	45.0	60	34.7	225	41.7
70–79	88	24.0	74	42.8	162	30.0
≥80	17	4.6	26	15.0	43	8.0
Total	367	100.0	173	100.0	540	100.0
Distribution of workers by age at HTG diagnosis
Age at diagnosis, years	Males		Females		Both sexes
	Number	%	Number	%	Number	%
<50	17	5.6	4	2.7	21	4.7
50–59	64	21.3	7	4.8	71	15.8
60–69	127	42.2	52	35.4	179	40.0
70–79	79	26.3	61	41.5	140	31.2
≥80	14	4.6	23	15.6	37	8.3
Total	301	100.0	147	100.0	448	100.0
Distribution of workers by age at NTG diagnosis
Age at diagnosis, years	Males		Females		Both sexes
	Number	%	Number	%	Number	%
<50	3	4.5	0	0	3	3.3
50–59	13	19.7	2	7.7	15	16.3
60–69	38	57.7	8	30.8	46	50.0
70–79	9	13.6	13	50.0	22	23.9
≥80	3	4.5	3	11.5	6	6.5
Total	66	100.0	26	100.0	92	100.0
Distribution of workers by age at PACG diagnosis
Age at diagnosis, years	Males		Females		Both sexes
	Number	%	Number	%	Number	%
<50	1	6.7	2	11.8	3	9.4
50–59	4	26.7	4	23.5	8	25.0
60–69	5	33.3	5	29.4	10	31.3
70–79	5	33.3	6	35.3	11	34.3
≥80	0	0	0	0	0	0
Total	15	100.0	17	100.0	32	100.0
Distribution of workers by duration of employment
Duration of employment, years	Males		Females		Both sexes
	Number	%	Number	%	Number	%
<1	839	5.0	217	3.8	1056	4.7
1–9	6149	36.9	2012	35.4	8161	36.5
≥10	9700	58.1	3460	60.8	13,160	58.8
Total	16,688	100.0	5689	100.0	22,377	100.0

POAG, primary open-angle glaucoma; NTG, normal-tension glaucoma; HTG, high-tension glaucoma; PACG, primary angle-closure glaucoma.