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. 2006 Aug 29;109(1):40–45. doi: 10.1182/blood-2006-02-005082

Table 2.

Associations between early predictors and late death, stroke, or the use of HU, CT, or SCT

Frequency of late outcomes Occurrence of early predictors
Painful episode
Dactylitis
ACS
Yes No P Yes No P Yes No P
    Death 1.9 1.9 >.999 0 2.2 >.999 2.4 1.7 .666
    Stroke, % 13.2 10.2 .619 0 11.6 .231 14.1 9.8 .303
    Death or stroke, % 13.2 12.1 .817 0 13.2 .233 15.3 11.6 .43
    HU, % 26.4 9.2 .002 12.5 12.4 >.999 25.9 5.8 <.001
    CT, % 17 14.1 .663 6.3 15.3 .48 20 12.7 .141
    SCT, % 0 0.5 >.999 0 0.4 >.999 0 0.6 >.999

The percentage of subjects who experienced each outcome is shown based on the occurrence or not of each early predictor. P values are calculated for each comparison of percentages (yes versus no) using the Fisher exact test.