Table 2.
Descriptive models of five categories for 30-day mortality in patients admitted to an intensive care unit with ischaemic stroke or intracerebral haemorrhage
| Ischaemic stroke | Intracerebral haemorrhage | |
| Prognostic models | AUC (95% CI) | AUC (95% CI) |
| Category 1: age and sex | 0.63 (0.61 to 0.64) | 0.61 (0.59 to 0.63) |
| Category 2: chronic health condition (previous category with add-on comorbidities)a | 0.64 (0.62 to 0.66) | 0.62 (0.60 to 0.64) |
| Category 3: level of consciousness (previous categories with add-on GCS score, lowest in first 24 h) | 0.83 (0.82 to 0.85) | 0.82 (0.80 to 0.83) |
| Category 4: acute physiological disturbance (previous categories with add-on APACHE to III APS)b | 0.85 (0.84 to 0.86) | 0.84 (0.83 to 0.86) |
| Category 5: complications (previous categories with add-on complications or ICU treatments)c | 0.86 (0.84 to 0.87) | 0.85 (0.83 to 0.86) |
APACHE, Acute Physiology and Chronic Health Evaluation; APS, acute physiology score; AUC, area under the curve; CI, confidence interval.
Comorbidities include chronic respiratory insufficiency/COPD, NYHA class IV, diabetes, chronic renal insufficiency or dialysis dependency, immunologic deficiency or compromised status and malignancies.
APACHE to III APS was calculated using all parameters except for GCS (as is also shown in Supplemental Digital Content 2), as this was accounted for in category 3 in order to separate acute physiological derangement and impaired level of consciousness. Further explanation is found in the Methods section.
Complications or ICU treatments include the use of mechanical ventilation or vasoactive medication and occurrence of acute renal failure or confirmed infection.
Calendar year of ICU admission (2010 to 2019), time and type of admission and type of hospital are taken into account in all descriptive models.