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Table 2. Hunt and Hess grade and age of the patients*
Age Group HH 1 HH 2 HH 3 HH 4 HH 5
65–70 38% 36% 44% 52% 50%
71–80 56% 45% 47% 42% 50%
81–87 16% 18% 9% 6% 0%
* To analyze the distribution of HH grading in correlation with the age of the patients, 3 age groups were built. This table gives the prudential patients of each HH grade at the 3 age groups.
Age Group	HH 1	HH 2	HH 3	HH 4	HH 5
65–70	38%	36%	44%	52%	50%
71–80	56%	45%	47%	42%	50%
81–87	16%	18%	9%	6%	0%