Table 1. Age distribution between two groups.

		Group
		Cases		Controls
		Count	%	Count	%
Age	≤30 y	15	30%	12	24%
	31–40 y	11	22%	16	32%
	41–50 y	10	20%	14	28%
	51–60 y	8	16%	6	12%
	>50 y	6	12%	2	4.%

Note: χ ²  = 4.212, d f  = 4, p  = 0.378.