. 2021 Feb 24;143(6):614–623. doi: 10.1111/ane.13403

TABLE 2.

Multivariate Cox‐regression analysis of seizure claim after index stroke hospitalization: all patients with acute stroke (N = 53 883)

Variables	Hazard ratio (95% CI)	p‐value
Age at stroke ^a	0.99 (0.99–0.99)	<.001
Sex ^b
Female	1.06 (1.00–1.12)	.058
Type of stroke ^c
Hemorrhage ^d (ICD−10 Code: ICD−10 I60.‐/I61.‐/I62.‐.)	1.13 (1.06–1.21)	<.001
Not specified as hemorrhage or infarction (ICD−10 code: I64.‐.)	0.88 (0.75–1.04)	.146
Length of index hospitalization ^a	1.02 (1.02–1.02)	<.001
Seizure claim during index hospitalization ^e	6.97 (6.53–7.43)	<.001

Patients were censored at death or end of observation. Number of patients with at least one seizure claim after index hospitalization: 5228.

CCI, number of all‐cause hospitalizations during baseline, and complexity of stroke treatment (based on DRG codes) did not show significant impact on time to first seizure claim after index hospitalization and are therefore not included in the table.

Abbreviations: CCI, Charlson Comorbidity Index; ICD‐10, International classification of diseases, 10th revision.

^{^a}

Analyzed as a continuous variable.

^{^b}

Reference: male.

^{^c}

Reference: cerebral infarction (ICD‐10 code: I63.‐).

^{^d}

Subarachnoid, intracerebral or nontraumatic intracranial.

^{^e}

Reference: no seizure claim during index hospitalization (patients may have had a seizure claim after index hospitalization).