TABLE 6.

Relationship Between WHS-Defined DED and Cups/d of Caffeinated/Decaffeinated Coffee in Coffee Drinkers Only, in a Multivariate Model Including Both

	All (N = 56,332)
	OR (95% CI), Model 1*	P	OR (95% CI), Model 2†	P	OR (95% CI), Model 3‡	P
Caffeinated coffee intake (cups/d)	0.975 (0.961–0.990)	0.001	0.981 (0.965–‡0.997)	0.02	0.995 (0.979–1.012)	0.58
Decaffeinated coffee intake (cups/d)	1.034 (1.002–1.068)	0.04	1.042 (1.007–1.077)	0.02	1.046 (1.010–1.084)	0.01

Bolded items indicate statistical significance (P < 0.05).

^*Model 1: corrected for age and sex alone.

^†Model 2: corrected for age, sex, body mass index, alcohol intake, smoking status, education level, and net monthly household income; full data available for 52,041 participants.

^‡Model 3: corrected for age, sex, body mass index, alcohol intake, smoking status, education level, net monthly household income, and 48 comorbidities associated with dry eye; full data available for 51,607 participants.