Table 1 Characteristics of ALS cases and controls (N = 1,049) in an international online questionnaire case–control study, 2015–2021.
From: Early life events may be the first steps on the multistep path to amyotrophic lateral sclerosis
ALS cases N = 568 | Controls N = 481 | |||
|---|---|---|---|---|
No | % | No | % | |
Gender | ||||
Male | 346 | 60.9 | 128 | 26.6 |
Female | 222 | 39.1 | 353 | 73.4 |
Age at completing questionnaire (years) | ||||
40–58 | 192 | 33.8 | 258 | 53.6 |
59–64 | 162 | 28.5 | 92 | 19.1 |
≥ 65 | 214 | 37.7 | 131 | 27.2 |
Continent of birth | ||||
Africa | 8 | 1.4 | 10 | 2.1 |
Asia | 22 | 3.9 | 20 | 4.2 |
Oceania (Australia & NZ) | 131 | 23.1 | 293 | 60.9 |
Europe | 68 | 12.0 | 81 | 16.8 |
North America | 325 | 57.2 | 70 | 14.5 |
South America | 14 | 2.5 | 7 | 1.5 |
First degree relative with ALS | 19 | 3.3 | 84 | 17.5 |
