Table 2.

Age of onset by current age stratum in ET_F vs. ET_S

Current age stratum (years)	n	Age of onset (years, ETF) 1	n	Age of onset (years, ETS) 1	Significance 2
<25	4	8.5 ± 2.4 [8.5]	1	16 (n = 1)	NA
25 – 29	5	11.8 ± 5.3 [15.0]	1	25 (n = 1)	NA
30 – 34	7	12.3 ± 4.7 [14.0]	1	12 (n = 1)	NA
35 – 39	7	16.0 ± 7.8 [15.0]	7	20.7 ± 10.1 [23.0]	p = 0.38
40 – 44	5	22.2 ± 11.1 [24.0]	2	37.5 ± 0.7 [37.5]	p = 0.095
45 – 49	6	18.2 ± 12.5 [16.0]	3	40.0 ± 8.7 [45.0]	p = 0.048
50 – 54	7	29.1 ± 15.1 [30.0]	5	32.2 ± 18.2 [45.0]	p = 0.64
55 – 59	8	22.9 ± 14.1 [19.5]	6	47.0 ± 16.4 [53.5]	p = 0.01
60 – 64	28	42.1 ± 17.0 [48.0]	14	51.8 ± 11.1 [55.5]	p = 0.04
65 – 69	32	36.8 ± 19.6 [42.0]	18	48.4 ± 18.6 [57.0]	p = 0.025
70 – 74	44	41.0 ± 19.7 [45.0]	33	56.3 ± 15.0 [61.0]	P < 0.001
75 – 79	39	49.7 ± 20.5 [55.0]	23	58.2 ± 18.4 [65.0]	p = 0.081
80 – 84	19	53.4 ± 20.7 [60.0]	18	66.8 ± 12.2 [71.5]	p = 0.049
≥85	21	50.0 ± 21.2 [65.0]	12	77.4 ± 13.0 [79.5]	p = 0.001

¹All values are means ± standard deviations [medians].

²Mann-Whitney test comparing age of onset in ET_F vs. ET_S.

NA = not applicable