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Table 4 Average, median, and distribution by quarter of onset relative to ALS diagnosis for selected symptoms in the ALS cohort

From: Diagnosis pathway for patients with amyotrophic lateral sclerosis: retrospective analysis of the US Medicare longitudinal claims database

    

Distribution of patients by time from symptom onset to ALS diagnosis (in quarters)

Symptom group

Symptom

Average, quarters

Median, quarters

0–3, %

4–7, %

8–11, %

12+, %

Limb

Muscle weakness

2.64

1.0

75

12

7

5

 

Gait abnormality

4.53

2.0

61

12

12

15

 

Difficulty in walking

5.18

3.0

52

15

21

12

 

Lack of coordination

3.26

1.0

68

16

9

7

Bulbar

Speech disturbance

1.83

1.0

89

7

3

1

 

Voice resonance disorder

3.00

2.0

76

8

11

5

 

Dysphagia

1.07

1.0

95

5

0

0

  1. ALS, amyotrophic lateral sclerosis.