TABLE 1.
Development of national guidelines.
| Guideline | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Methods | Denmark (2022) | France (2007) | Germany (2019) | Netherlands (2019) | Norway (2022) | Spain a | Turkey (2006) | United States (blood tests, 2009) | United States (NCS, 2012) | United States (NCS, 2017) |
| Developed by | Steering committee consisting of representatives of the Danish neurological society | Work group (neurologists, neuropediatric, neurophysiologists, general practitioners, diabetologists, rheumatologist, infectiologist) | Guideline commission of the German neurological association | Working group (neurologists, neurologists in training, patient representatives) | Two neurologists | Work group of neurologists with specialty in neuromuscular disorders | Panel of experts | Panel of experts | AAN committee | AANEM committee |
| Systematic literature review | Not stated | Yes | Yes | Yes, using PICO | Not stated | Not stated | Not stated | Yes | Not stated | Not stated |
| Number of references | 8 | 113 | 127 | 18 | 20 | Not stated | 9 | 37 | 53 | 24 |
| Assessment of risk of bias (using critical appraisal tool) | Not stated | Not stated | Not stated | Yes (ACROBAT‐NRS for observational studies, QUADAS II for diagnostic studies) | Not stated | Not stated | Not stated | Yes (diagnostic test classification‐of‐evidence scheme) | Not stated | Not stated |
| Determine strength of recommendation | Not stated | Yes (using HAS method) | Not stated | Yes (using GRADE) | Not stated | Not stated | Not stated | Yes (using AAN method) | Not stated | Not stated |
| Other | DELPHI‐method to reach consensus about recommendations | |||||||||
| Classification b | S1 | S1 | S2 | S3 | S1 | S1 | S1 | S3 | S1 | S1 |
a
Year of publication unknown.
b
S1, recommendations by experts; S2, structured consensus process or systematic literature review; S3, structured consensus process and systematic literature review.