Fig 2. Diagnostic categories of the ALS patients according to the revised EI Escorial and Awaji criteria.

Based on the rEEC, 4% were diagnosed as possible ALS, 60% as probable ALS-laboratory supported, 25% as probable ALS, and 11% as definite ALS. Following the application of the AC, the proportions were 22% possible ALS, 36% probable ALS and 42% definite ALS. ALS: amyotrophic lateral sclerosis; Probable LS: probable laboratory-supported.