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. Author manuscript; available in PMC: 2009 Jul 29.
Published in final edited form as: Arch Intern Med. 2008 Oct 27;168(19):2104–2110. doi: 10.1001/archinte.168.19.2104

Table 4.

Thirty-day case-fatality rates (CFR) after hospital admission according to stroke status and time period. (Worcester Heart Attack Study)

Stroke
Study Years Present Absent p-value
N CFR% N CFR%
1986 / 1988 5 38.5 234 18.2 0.06
1990 / 1991 6 46.2 218 15.0 0.001
1993 / 1995 6 25.0 236 14.0 0.12
1997 / 1999 14 36.8 242 13.4 <0.001
2001 / 2003 7 46.7 155 14.5 <0.001
2005 5 55.6 97 12.3 <0.001