Table 2.

Odds ratios (95% confidence intervals) of acute glaucoma attack per IQR increase in ambient air pollution exposure, stratified by sex and age

Air pollution	Lag	Variables	Sub-groups	OR (95% CI)	P value	P value for interaction
PM2.5	0–3	Total		1.07 (1.03, 1.11)	< 0.001*
		Sex	Male	1.06 (1.02, 1.11)	0.008*	0.722
			Female	1.07 (1.02, 1.13)	0.008*
		Age (y)	18–44	1.05 (1.01, 1.09)	0.003*	0.245
			45–85	1.10 (1.03, 1.18)	0.012
PM10	0–1	Total		1.03 (1.01, 1.05)	0.004*
		Sex	Male	1.02 (0.98, 1.06)	0.331	0.491
			Female	1.03 (1.01, 1.07)	0.010
		Age (y)	18–44	1.02 (0.99, 1.05)	0.166	0.461
			45–85	1.05 (1.02, 1.10)	0.014
SO2	0–1	Total		1.00 (0.97, 1.04)	0.848
		Sex	Male	1.00 (0.95, 1.06)	0.917	0.975
			Female	1.00 (0.96, 1.05)	0.878
		Age (y)	18–44	0.99 (0.95, 1.04)	0.744	0.351
			45–85	1.03 (0.96, 1.10)	0.379
NO2	0–3	Total		1.12 (1.08, 1.17)	< 0.001*
		Sex	Male	1.10 (1.01, 1.20)	0.040	0.152
			Female	1.21 (1.12, 1.30)	< 0.001*
		Age (y)	18–44	1.11 (0.99, 1.25)	0.115	0.240
			45–85	1.18 (1.10, 1.26)	< 0.001*
CO	0–1	Total		1.04 (1.01, 1.07)	0.008*
		Sex	Male	1.03 (0.99, 1.07)	0.198	0.360
			Female	1.06 (1.01, 1.11)	0.023
		Age (y)	18–44	1.03 (0.99, 1.07)	0.117	0.278
			45–85	1.07 (1.01, 1.14)	0.019
O3	0–1	Total		1.02 (0.98, 1.06)	0.319
		Sex	Male	1.00 (0.94, 1.06)	0.953	0.349
			Female	1.03 (0.99, 1.08)	0.170
		Age (y)	18–44	1.00 (0.95, 1.04)	0.875	0.104
			45–85	1.09 (1.01, 1.17)	0.023

^*Statistically significant estimate (p value < 0.0083)