TABLE 2.

Comparison between the number of mutation-positive versus mutation-negative patients (reflected in percentages) observed per ten-year intervals.

Age group	Mutation negative (n = 2,413)	Mutation positive (n = 481)	Total (%)
0–19 (n = 3)	0.10	0.00	0.10
20–29 (n = 62)	1.66	0.48	2.14
30–39 (n = 480)	13.96	2.63	16.59
40–49 (n = 800)	23.15	4.49	27.64
50–59 (n = 616)	17.45	3.84	21.29
60–69 (n = 467)	13.41	2.73	16.14
70–79 (n = 278)	8.05	1.55	9.61
80–89 (n = 108)	3.25	0.48	3.73
90+ (n = 21)	0.59	0.14	0.73
Unknown (n = 59)	1.76	0.28	2.04
Total (%)	83.38	16.62	100.00