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. Author manuscript; available in PMC: 2014 May 1.
Published in final edited form as: Stroke. 2013 Mar 26;44(5):1282–1287. doi: 10.1161/STROKEAHA.111.000529

Table 3.

Hazard ratio for incident ICH assessing the age-by-race interaction (p-value), race-specific effects of age, and age-specific racial differences; all show in incremental models (race-age alone, addition of sex, addition of SBP, and the addition of warfarin) corresponding to Table 4

Race-Age
Alone		 After
adjustment
for Sex		 After further
adjustment for
SBP		 After further
adjustment for
warfarin
Race*age interaction p-
value		 0.0062 0.0066 0.0071 0.010
Race-
specific
association
of age (10
years)		 White 2.25
(1.63 – 3.12)
<0.0001		 2.23
(1.60 – 3.09)
<0.0001		 2.12
(1.52 – 2.97)
<0.0001		 2.03
(1.44 – 2.86)
<0.0001
African
American		 1.09
(0.70 – 1.68)
0.71		 1.07
(0.69 – 1.66)
0.76		 1.02
(0.66 – 1.60)
0.92		 1.01
(0.65 – 1.58)
0.96
Age-
specific
association
of AA race		 45 5.41
(1.48 – 19.93)
0.011		 6.20
(1.68 – 22.89)
0.0063		 5.58
(1.49 – 20.90)
0.011		 5.30
(1.41 – 19.91)
0.014
55 2.60
(1.08 – 6.29)
0.033		 2.98
(1.23 – 7.20)
0.016		 2.69
(1.10 – 6.61)
0.031		 2.64
(1.07 – 6.48)
0.034
65 1.25
(0.66 – 2.40)
0.49		 1.43
(0.75 – 2.73)
0.27		 1.30
(0.67 – 2.51)
0.43		 1.31
(0.68 – 2.54)
0.41
75 0.60
(0.28 – 1.31)
0.30		 0.69
(0.32 – 1.50)
0.34		 0.63
(0.29 – 1.38)
0.24		 0.65
(0.30 – 1.44)
0.29
85 0.29
(0.09 – 0.92)
0.036		 0.33
(0.10 – 1.05)
0.061		 0.30
(0.09 – 0.97)
0.045		 0.33
(0.10 – 1.05)
0.061