TABLE 1.
Baseline patient characteristics and characteristics of index stroke hospitalization.
|
Cohort A: Patients with seizure claim (N = 6054) |
Cohort B: Patients without seizure claim (N = 47 829) |
p‐value |
Cohort A−1: Patients with seizure claim and index hospitalization in 2011 (N = 1450) |
Cohort B−1: Patients without seizure claim and index hospitalization in 2011 (N = 10,077) |
p‐value |
Cohort A−2: Patients with at least two seizure claims (N = 4178) |
Cohort A−3: Patients with seizure claim during index hospitalization (N = 2130) |
|
|---|---|---|---|---|---|---|---|---|
| Age at index date, years | ||||||||
| Mean (SD) | 73.95 (12.89) | 76.48 (12.41) | <.001 | 73.83 (12.41) | 76.83 (11.87) | <.001 | 72.83 (13.09) | 74.69 (13.00) |
| Median (range) | 77 (1–100) | 79 (1–105) | 76 (19–98) | 79 (1–104) | 76 (1–100) | 78 (1–100) | ||
| Sex | ||||||||
| Female (%) | 54.18 | 56.02 | .007 | 57.10 | 58.08 | .480 | 53.14 | 53.57 |
| Charlson Comorbidity Index | ||||||||
| Mean (SD) | 4.09 (3.04) | 4.15 (2.93) | .104 | 4.03 (2.99) | 4.13 (2.87) | .228 | 3.93 (2.98) | 4.13 |
| <3 (%) | 34.77 | 33.01 | 51.52 | 52.56 | 36.43 | 35.59 | ||
| 3–5 (%) | 36.11 | 38.30 | 20.41 | 19.80 | 36.12 | 34.18 | ||
| >5 (%) | 29.12 | 28.69 | 28.07 | 27.65 | 27.45 | 30.23 | ||
| Type of stroke at index hospitalization, % of patients | ||||||||
| Cerebral infarction a | 74.30 | 82.24 | <.001 | 74.97 | 80.83 | <.001 | 73.19 | 66.06 |
| Hemorrhagic b | 22.96 | 13.68 | <.001 | 20.21 | 13.60 | <.001 | 24.34 | 31.74 |
| Unspecified c | 2.74 | 4.09 | <.001 | 4.83 | 5.58 | .241 | 2.47 | 2.21 |
| Complexity of stroke treatment, % of patients (diagnosis‐related groups; B70A = most complex; B70H = least complex) | ||||||||
| B70A | 7.88 | 2.18 | <.001 | 6.48 | 1.94 | <.001 | 7.92 | 15.77 |
| B70B | 15.79 | 17.93 | <.001 | 16.00 | 16.73 | .485 | 16.47 | 7.65 |
| B70C | 7.50 | 6.14 | <.001 | 6.48 | 4.29 | <.001 | 7.56 | 10.52 |
| B70D | 8.28 | 12.75 | <.001 | 9.59 | 10.96 | .116 | 8.28 | 3.94 |
| B70E | 9.60 | 5.73 | <.001 | 9.31 | 6.16 | <.001 | 9.43 | 14.84 |
| B70F | 20.94 | 32.62 | <.001 | 26.00 | 38.29 | <.001 | 20.01 | 11.69 |
| B70G (death <4 days after admission) | 0.23 | 0.68 | <.001 | 0.21 | 0.63 | .059 | 0 | 0.66 |
| B70H (death <4 days after admission) | 0.33 | 1.77 | <.001 | 0.34 | 2.06 | <.001 | 0 | 0.94 |
| DRG code other than B70 | 29.45 | 20.20 | <.001 | 25.59 | 18.95 | <.001 | 30.33 | 33.99 |
| Length of stay, days | ||||||||
| Mean (SD) | 16.11 (14.17) | 11.48 (9.40) | <.001 | 15.52 (14.34) | 11.66 (8.97) | <.001 | 16.68 (14.27) | 16.78 |
| Median (range) | 12 (1–195) | 9 (1–217) | 12 (1–164) | 10 (1–123) | 13 (1–195) | 13 (1–195) | ||
a
ICD‐10 I63.
b
ICD‐10 I60.‐/I61.‐/I62.
c
ICD‐10 I64.‐.