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. Author manuscript; available in PMC: 2016 May 7.
Published in final edited form as: Neuroepidemiology. 2015 May 7;44(3):166–172. doi: 10.1159/000381807

Table 3.

Number (proportion) of ETF vs. ETS cases in each age of onset stratum

Age of onset stratum (years) ETF (n = 232) ETS (n = 144)
By 5-year age of onset stratum
 <5 0 (0.0) 1 (0.7)
 5 - 9 19 (8.2) 4 (2.8)
 10 – 14 21 (9.1) 4 (2.8)
 15 – 18 1 31 (13.4) 2 (1.4)
 19 – 24 1 12 (5.2) 5 (3.5)
 25 – 29 5 (2.2) 4 (2.8)
 30 – 34 11 (4.7) 2 (1.4)
 35 – 39 8 (3.4) 4 (2.8)
 40 – 44 17 (7.3) 11 (7.6)
 45 – 49 14 (6.0) 15 (10.4)
 50 – 54 18 (7.8) 8 (5.6)
 55 – 59 23 (9.9) 14 (9.7)
 60 – 64 16 (6.9) 19 (13.2)
 65 – 69 15 (6.5) 21 (14.6)
 70 – 74 11 (4.7) 10 (6.9)
 75 – 79 6 (2.6) 12 (8.3)
 80 – 84 5 (2.2) 4 (2.8)
 ≥85 0 (0.0) 4 (2.8)
By larger age of onset stratum
 ≤18 71 (30.6) 11 (7.6)
 19 - 39 36 (15.5) 15 (10.4)
 40 - 59 72 (31.0) 48 (33.3)
 ≥ 60 53 (22.8) 70 (48.6)

Percentages are column percentages.

1

These two age strata were modified slightly in order to better present data for childhood onset ET (i.e., onset ≤ 18 years).