Predictors of short- and long-term mortality in critically ill, older adults admitted to the emergency department: an observational study

Table 2 Unadjusted analysis regarding death within 30 days after ED admission for critically ill patients aged ≥ 70 (n = 402)

Variable	Prevalence n (%)	Unadjusted HR (95% CI)	p-value
CCI > 2	126 (31.3)	1.06 (0.73–1.54)	0.76
Age, mean (SD)	82.1 (6.4)	1.06 (1.03–1.09)	< 0.0001
Female sex	181 (45.0)	0.94 (0.66–1.34)	0.72
ICU/cICU	76 (18.9)	0.83 (0.51–1.34)	0.44
Symptoms on admissiona
Dyspnea	200 (49.8)	1.14 (0.80–1.62)	0.47
Unconsciousness	59 (14.7)	2.61 (1.74–3.90)	< 0.0001
Chest pain	46 (11.4)	0.57 (0.29–1.12)	0.11
Seizure attack	16 (4.0)	0.17 (0.02–1.19)	0.07
Vomiting	22 (5.5)	0.50 (0.18–1.35)	0.17
Vital signs on admission
Obstructive airway	26 (6.5)	1.71 (0.92–3.18)	0.09
Hypoxiab (5)c	224 (56.4)	2.23 (1.51–3.30)	< 0.0001
Hypotensiond (3)	52 (13.0)	0.84 (0.48–1.46)	0.54
Respiratory rate (br/min), ≤ 8/ ≥ 30 (43)	215 (59.9)	1.45 (0.98–2.14)	0.06
Heart rate (bpm) ≥ 130/ ≥ 150e (1)	82 (20.4)	0.56 (0.34–0.93)	0.03
RLS > 3	65 (16.2)	2.43 (1.64–3.61)	< 0.0001
Ongoing seizure attack	15 (3.7)	0.38 (0.09–1.52)	0.17
Signs of infection	142 (35.3)	0.75 (0.51–1.09)	0.13
Admission time point
Workday 8 am—8 pm	195 (48.5)	1.12 (0.78–1.58)	0.54

Four hundred two patients were included in the analysis. There were one hundred twenty-five deaths
CCI Charlson Comorbidity Index, ICU intensive care unit, cICU coronary intensive care unit, br/min breaths per minute, bpm beats per minute, RLS Reaction Level Scale
^aFive most commonly reported main symptoms in the ambulance
^bOxygen saturation < 90%
^cNumber missing
^dSystolic blood pressure < 90 mmHg
^eRegular/irregular

ISSN: 1471-227X