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. Author manuscript; available in PMC: 2010 Oct 1.
Published in final edited form as: J Invest Dermatol. 2009 May 21;129(10):2411–2418. doi: 10.1038/jid.2009.112

Table 3.

Incidence of Stroke in Patients with Psoriasis Compared with Control Patients

Variable Mild Group Severe Group
Control
(n=496666)		 Psoriasis
(n=129143)		 Control
(n=14330)		 Psoriasis
(n=3603)
Follow-up time,
y
 Mean ± SD 4.2 ± 3.3 4.4 ± 3.3 3.4 ± 2.7 3.4 ± 2.7
 Median (IQR) 3.5, 1.5, 6.6 3.7, 1.6, 6.9 2.6, 1.2, 5.0 2.7, 1.2, 5.0
Number of
person-years		 2108718 570814.5 48248.4 12222.1
Number of new
stroke cases
(%)		 8535 (1.72%) 2100 (1.63%) 212 (1.48%) 74 (2.05%)
Incidence per
1000 person-
years (95% CI)		 4.05 (3.96,
4.13)		 3.68 (3.52,
3.84)		 4.39 (3.82,
5.03)		 6.05 (4.76,
7.60)

Abbreviations: CI, confidence interval; SD, standard deviation; IQR, interquartile range.