Supplemental table 1 (table s1). ICD, NAC, ATC and SKS codes used for definitions of exposure electroconvulsive therapy (ECT), outcome (road traffic accidents) and covariables. ICD = International Classification of Diseases; NAC= Nordic Accidents Classification; ATC = Anatomic Therapeutical Chemical (ATC); SKS = Health Care Classification System.
ICD-10 or NAC-codes ATC-codes SKS-codes
ECT BRXA1*; BRTB1*
Road traffic accidents EUP2–EUP9; EUG00-
EUG05; V20–V49
Dementia/delirium/organic F00–F09
Substance abuse F10–F19
Schizophrenia and psychotic disorders F20–F29
Mania/bipolar disorders F30–F39
Depression without psychotic symptoms
Depression with psychotic symptoms F323, F333
Other affective disorders F34, F38
Anxiety disorders F40–F42, F44–F48
Adjustment disorders F43
Eating, sleeping, sexual disorders F50–F59
Personality disorder F60–F69
Mental retardation/early life disorder F70–F79
Other mental disorders F80–F99
Other contact codes Z00–Z99
Comorbid heart disease 410–414, I20-I25
Comorbid stroke 433–438; I61, I63, I64, G45
Comorbid diabetes 250, E10–E11, E14
Comorbid epilepsia 345, G40–G41
Previous road traffic accident EUP2–EUP9; EUG00–
EUG05; V20–V49
Tricyclic antidepressants N06AA
Antipsychotics N05A
Antiparkinsonian drugs N04BC
Hypnotics N05C
Anxiolytics N05B
Antiepileptic drugs N04A, N03A
Opioids N02AA
