A case-control study on alcohol and seizures: study design, protocol, and data collection. The ALCE (Alcohol and...

Area of Science:

• Neurology
• Epidemiology
• Addiction Medicine

Background:

• Generalized tonic-clonic seizures (GTCS) are a common seizure type, and understanding their risk factors is crucial for prevention and management.
• The role of chronic alcoholism and alcohol consumption as potential triggers for a first GTCS requires further investigation.
• A multicenter case-control study design was employed to rigorously assess this association.

Observation:

• The study included 278 patients who experienced their first GTCS (cases) and 556 matched controls.
• Data on potential risk factors, including alcohol consumption, were collected via questionnaires.
• The study design focused on case and control selection, data collection validity, and interview strategies, ensuring robust methodology.

Findings:

• Inter-rater reliability for assessing drinking status, patterns, and general consumption levels was excellent.
• While agreement on weekly servings varied, a high correlation (r = 0.91) was found for summarizing daily alcohol intake.
• The study design effectively captured data to evaluate the relationship between alcohol and first GTCS.

Implications:

• Findings suggest that chronic alcoholism and alcohol intake may be identifiable risk factors for initiating generalized tonic-clonic epileptic seizures.
• This research highlights the importance of considering alcohol consumption in the etiological assessment of new-onset seizures.
• Further research can build upon this design to explore specific consumption thresholds and patterns associated with seizure risk.