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Case-control study on cerebrovascular diseases following childhood
cancer : France, UK, the Netherlands
253 cases of permanent stroke and 253 individually matched controls
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72 cases and 72 controls from the UK, from the BCCSS (UB, UK, M
Hawkins)
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153cases and 153 controls, from the FCCSS (INSERM, France, F de
Vathaire).
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28 cases and 28 controls from the DOG Later cohort (AMD, The
Netherlands, AMD, L Kremer)
Matching criteria
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Cohort
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Gender
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Age at first primary cancer diagnosis (+/- 1 year)
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Calendar year at first primary cancer diagnosis (+/- 3 years)
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Length of follow-up
A control can serve as a control for more than one case. In addition,
control from one matched set may later be found to be a case, at which
point the appropriate control will be selected for the new set.