t think there is such a statistic that you will have a worse recurrent stroke
in 5 years. Granted, some things that caused his stroke
are already irreversible but with good risk factor control and exercise routine, he can extend the time to his next stroke for his whole lifetime. If all of his risk factors have been identified and he goes to regular check ups (a visit to a neurologist could be useful every year or 6 months), he should really be ok.