It was found that both blacks and whites performed worse after their stroke than before it: their score had decreased as much as it would have had they been 7.9 years older.

Ban da wannan kuma, karuwar cinikayya a tsakanin Sin da wasu kasuwanni masu tasowa, ciki har da yankin Latin Amurka, da nahiyar Afirka da dai sauransu ta kai kashi 7.4 cikin dari da kashi 9 cikin dari.
