Table 1.

Demographic characteristics of participants by daily coffee and tea intake in the CPS-II and PLCO cohorts.

	CPS-II					PLCO
	Cups per day					Cups per day
Coffee	None	<1	[1-3)	≥3	P-trenda	None	<1	[1-3)	≥3	P-trenda
n	53	78	273	53		76	61	81	263
Age (y; mean ± SD)	72.8 ± 6.4	72.5 ± 6.6	73.1 ± 5.9	71.5 ± 5.6	0.53	63.4 ± 5.1	63.7 ± 5.5	63.5 ± 5.3	63.9 ± 5.1	0.41
Male (%)	49.1	62.8	56.8	75.5	0.06	73.7	59	63	67.3	0.72
White (%)	94.3	96.2	98.9	98.1	0.04	96.1	93.4	95.1	96.2	0.67
BMIb (kg/m2; mean ± SD)	25.5 ± 5.3	26.8 ± 4.6	26.2 ± 4.2	26 ± 3.6	0.97	27.6 ± 5.2	26.9 ± 4.8	27.1 ± 5	27.3 ± 3.7	0.22
Current smoker (%)	5.7	2.6	5.5	15.1	0.06	6.6	1.6	3.7	13.3	0.007
Alcohol (g/day; mean ± SD)	3.5 ± 7.9	8.9 ± 14.8	10.4 ± 14.3	14.4 ± 17.2	<0.0001	12.7 ± 57.4	14.2 ± 62.9	9.8 ± 20	16.8 ± 39.2	<0.0001
Tea (cups/day; mean ± SD)	0.8 ± 1.7	0.6 ± 1.0	0.5 ± 0.8	0.4 ± 1.1	0.21	1.5 ± 2.7	1 ± 1.6	1.3 ± 1.9	0.9 ± 1.6	0.89
Tea	None	<1	[1-3)	≥3	P-trenda	None	<1	[1-3)	≥3	P-trenda
n	113	262	70	12		118	236	70	57
Age (y; mean ± SD)	71.9 ± 6.5	73.1 ± 5.8	72.7 ± 6.1	74.8 ± 7.0	0.20	63.7 ± 5.2	63.8 ± 5.4	64.0 ± 4.6	63.2 ± 4.9	0.87
Male (%)	81.4	52.3	47.1	66.7	<0.0001	76.3	63.1	61.4	66.7	0.12
White (%)	98.2	98.5	95.7	91.7	0.12	93.2	95.8	97.1	98.2	0.10
BMIb (kg/m2; mean ± SD)	25.9 ± 4.3	26.3 ± 4.1	26.1 ± 4.6	26.1 ± 7.8	0.75	26.9 ± 4.1	27.1 ± 4.2	27.3 ± 5.3	28.1 ± 4.3	0.10
Current smoker (%)	14.2	4.2	1.4	0.0	0.0001	13.6	7.2	4.3	14.0	0.60
Alcohol (g/day; mean ± SD)	11.7 ± 17.1	9.8 ± 13.8	7.5 ± 12.4	5.1 ± 7.9	0.24	13.6 ± 26.5	17.2 ± 50.0	6.1 ± 9.8	16.3 ± 65.6	0.95
Coffee (cups/day; mean ± SD)	2.1 ± 1.8	1.7 ± 1.3	1.6 ± 1.4	1.1 ± 1.3	0.11	4.2 ± 4.5	4.0 ± 3.2	3.8 ± 3.6	3.0 ± 3.5	0.27

^aP-values are from Spearman correlations for continuous variables or Chi-squared test for trend in proportions for categorical variables.

^bParticipants missing BMI (n=28) imputed with cohort-specific medians.