TABLE 3.

Association of tea consumption with stroke risk according to duration and amount of tea consumed¹

	Total stroke2		Ischemic stroke		Hemorrhagic stroke
Variables of tea consumption3	HR (95% CI)4	P trend	HR (95% CI)4	P trend	HR (95% CI) 4	P trend
Never	1.00		1.00		1.00
Duration of tea consumption, y		<0.001		0.002		<0.001
<19	0.95 (0.91, 0.998)		0.97 (0.92, 1.02)		0.88 (0.79, 0.98)
19–30	0.89 (0.84, 0.94)		0.89 (0.84, 0.96)		0.85 (0.75, 0.97)
>30	0.92 (0.87, 0.97)		0.93 (0.88, 0.99)		0.81 (0.72, 0.91)
Amount of tea consumed, g/d		<0.001		0.002		<0.001
<2	0.96 (0.91, 1.00)		0.96 (0.91, 1.02)		0.90 (0.81, 0.99)
2–4	0.91 (0.87, 0.95)		0.93 (0.88, 0.98)		0.82 (0.74, 0.91)
>4	0.91 (0.87, 0.96)		0.92 (0.87, 0.98)		0.82 (0.72, 0.92)
Amount of tea consumed, gram-years		<0.001		0.001		<0.001
<46	0.95 (0.91, 1.00)		0.96 (0.91, 1.01)		0.90 (0.80, 0.996)
46–105	0.92 (0.88, 0.97)		0.94 (0.89, 0.997)		0.83 (0.74, 0.93)
>105	0.90 (0.86, 0.94)		0.91 (0.86, 0.96)		0.81 (0.73, 0.91)
Amount of tea consumed, cups/d		<0.001		0.002		<0.001
<2	0.93 (0.89, 0.98)		0.95 (0.90, 1.01)		0.88 (0.79, 0.98)
2–4	0.93 (0.89, 0.98)		0.96 (0.90, 1.01)		0.88 (0.79, 0.98)
>4	0.92 (0.87, 0.97)		0.91 (0.86, 0.97)		0.78 (0.69, 0.88)
Amount of tea consumed, cup–years		<0.001		0.009		<0.001
<34	0.95 (0.90, 1.01)		0.94 (0.89, 1.01)		0.92 (0.82, 1.03)
34–105	0.93 (0.88, 0.97)		0.93 (0.88, 0.99)		0.80 (0.71, 0.89)
>105	0.91 (0.86, 0.95)		0.94 (0.89, 0.996)		0.83 (0.74, 0.93)

¹Values were obtained from a Cox proportional hazards analysis. P_trend, P for the linear trend test.

²Including hemorrhagic stroke, ischemic stroke, and stroke of unknown type.

³Variables of tea consumption (duration and amount of tea consumed) were only calculated among daily tea consumers.

⁴Adjusted for age; sex; marital status; education; annual household income; smoking status; alcohol consumption; physical activity; BMI; history of hypertension; history of diabetes; intake frequencies of red meat, fresh fruits, and fresh vegetables; and family history of stroke.