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Table 1 Characteristics of the study population. CI: confidence interval

From: Total health insurance costs in children with a migraine diagnosis compared to a control group

Characteristics Control group (95% CI) Migraine group (95% CI) P value
N 306,926 2597 (51.2% incident in 2017)
Girls % 48.7 (48.5,48.9) 47.1 (45.2;49.1) 0.12
Mean age in years 8.4 (8.4;8.5) 9.3 (9.3;9.4) <  0.0001
Mean number of comorbid ICD-10 chapters 3.9 (3.9;3.9) 5.8 (5.7;5.8) <  0.0001