Table 1.
Baseline characteristics and process parameters for ICH patients in B_PROUD.
| ICH patients with MSU dispatch (n = 95) | ICH patients without MSU dispatch (n = 78) | |
|---|---|---|
| Age, years, mean (SD) | 72 (13) | 71 (12) |
| Sex, female, n (%) | 43 (45.3) | 34 (43.6) |
| Arterial hypertension, n (%) | 89 (93.7) | 68 (87.2) |
| Atrial fibrillation, n (%) | 23 (24.2) | 25 (32.1) |
| Diabetes mellitus, n (%) | 19 (20.0) | 14 (17.9) |
| Oral anticoagulation within 48 h of event, n (%) | 12 (12.9) (2 missing) |
11 (14.7) (3 missing) |
| Haemorrhage classification | ||
| Deep location, n (%) | 46 (48.4) | 39 (50.0) |
| Lobar location, n (%) | 35 (36.8) | 30 (38.5) |
| Living at home without assistance, n (%) | 69 (72.6) | 49 (62.8) |
| Living in nursing institution, n (%) | 10 (10.5) | 11 (14.1) |
| MSU coverage a at site of emergency at the time of dispatch | ||
| 1 MSU, n (%) | 46 (48.4) | 54 (69.2) |
| 2 MSU, n (%) | 35 (36.8) | 19 (24.4) |
| 3 MSU, n (%) | 14 (14.7) | 5 (6.4) |
| Time from onset or last-seen-well to dispatch, minutes, median (IQR) | 30 (11–100) (4 missing) |
22 (10–64) (2 missing) |
| First assessed b NIHSS score, c median (IQR) | 12 (7–18) (2 missing) |
10 (5–15) (18 missing) |
| NIHSS score assessed at hospital admission, median (IQR) | 11 (7–16) (22 missing) |
10 (5–15) (18 missing) |
| Pre-hospital systolic blood pressure measurement, mmHg, mean (SD) | 177 (34) (1 missing) |
172 (37) (2 missing) |
| Prehospital systolic BP measurement ⩾ 160 mmHg, n (%) | 67 (71.3) (1 missing) |
48 (63.2) (2 missing) |
| Systolic BP difference between prehospital and hospital-arrival measurements, mmHg, mean (SD) | –16 (43) (23 missing) |
5 (37) (9 missing) |
| Dispatch-to-first ambulance arrival, minutes, median (IQR) | 8 (7–11) | 8 (6–11) (1 missing) |
| Dispatch-to-MSU-arrival, minutes, median (IQR) | 17 (14–21) (10 missing) |
|
| First ambulance arrival to hospital arrival, minutes, median (IQR) | 57 (46–63) | 31 (25–37) (1 missing) |
| MSU arrival to hospital arrival, minutes, median (IQR) | 49 (42–57) (10 missing) |
|
| Pre-hospital imaging-to-hospital-arrival, minutes, median (IQR) | 34 (26–43) (29 missing) |
|
| Dispatch-to-hospital arrival, minutes, median (IQR) | 65 (55–74) | 39 (33–46) |
| Number of cranial scans available for haematoma volume measurements per patient, mean (SD) | 2 (1) | 2 (1) |
| Onset or last-seen-well to first cranial imaging, minutes, median (IQR) | 76 (49–160) | 85 (64–136) |
| First measured haemorrhage volume, ml, mean (SD) | 32 (42) (6 missing) |
34 (43) (10 missing) |
| Onset or last seen well to imaging with maximum haematoma volume, minutes, median (IQR) | 248 (99–1342) (9 missing) |
224 (96–762) (12 missing) |
| Surgical ICH treatment, n (%) | 14 (14.7) | 16 (20.5) |
SD: standard deviation; MSU: mobile stroke unit; IQR: interquartile range; NIHSS: National Institutes of Health Stroke Scale; TIA: transient ischaemic attack.
a
MSU coverage varied by geographical location due to partially overlapping operation areas and subsequent roll-out of second and third MSU; Number of MSUs covering the individual’s location.
b
Assessment in MSU in patients cared for by MSU or in emergency department in patients not cared for by MSU.
c
The NIHSS is a score ranging from 0 to 42, with higher scores indicating greater neurological deficits.