Characteristics | Total | With thrombocytopenia | Without thrombocytopenia | p value |
---|---|---|---|---|
Demographic features | ||||
 Age (years) | 80.7 ± 8.2 | 78.5 ± 9.1 | 81.3 ± 7.8 | 0.1 |
 Gender (male %) | 68 (50) | 16 (52) | 52 (50) | 0.84 |
Comorbidities | ||||
 Diabetes mellitus (%) | 53 (39) | 14 (45) | 39 (37) | 0.43 |
 Hypertension (%) | 78 (57) | 11 (35) | 67 (64) | <0.01 |
 Heart failure (%) | 23 (17) | 4 (13) | 19 (18) | 0.5 |
 Coronary artery disease (%) | 11 (8) | 2 (6) | 9 (9) | 0.71 |
 Peripheral artery occlusive disease (%) | 9 (7) | 3 (10) | 6 (6) | 0.44 |
 Chronic obstructive pulmonary disease (%) | 15 (11) | 2 (6) | 13 (12) | 0.36 |
 Chronic kidney disease (%) | 54 (40) | 14 (45) | 40 (38) | 0.48 |
 Previous or active malignancy (%) | 35 (26) | 8 (26) | 27 (26) | 0.99 |
 Peptic ulcer disease (%) | 12 (9) | 2 (6) | 10 (10) | 0.6 |
 Charlson comorbidity index | 7 (6–9) | 7 (5–9) | 8 (6–9) | 0.1 |
Initial impression (%) | Â | Â | Â | 0.23 |
 Cardio- or cerebro-vascular events | 11 (8) | 3 (10) | 8 (8) |  |
 Pulmonary diseases | 63 (46) | 10 (32) | 53 (50) |  |
 Gastrointestinal and hepatic diseases | 21 (15) | 9 (29) | 12 (11) |  |
 Renal diseases | 14 (10) | 3 (10) | 11 (10) |  |
 Infection of unknown origin | 11 (8) | 3 (10) | 8 (8) |  |
 Miscellaneous | 16 (12) | 3 (10) | 13 (12) |  |
First vital signs obtained on ED evaluation | ||||
 Systolic blood pressure (mmHg) | 131 (110.3–153) | 133 (101–146) | 130 (112–154) | 0.89 |
 Diastolic blood pressure (mmHg) | 73 (62–84) | 71 (60–82) | 73 (62–84) | 0.73 |
 Heart rate (/min) | 96.7 ± 20.8 | 96.8 ± 27.1 | 96.7 ± 18.7 | 0.98 |
 Body temperature (°C) | 37.2 ± 1.2 | 37.2 ± 1.2 | 37.3 ± 1.1 | 0.77 |
 Respiratory rate (/min) | 20 (18–22) | 18 (18–22) | 20 (18–22) | 0.88 |
First laboratory data on ED | ||||
 Leukocyte counts (K/μL) | 11.4 (7.9–15.6) | 8.2 (4.9–12.3) | 12 (8.4–16.5) | < 0.01 |
 Hemoglobin (g/dL) | 11.4 (9.6–12.8) | 11.3 (8.8–12.4) | 11.6 (9.6–13.1) | 0.47 |
 Platelet counts (K/μL) | 225 ± 102 | 102 ± 51 | 262 ± 82 | < 0.01 |
 Baseline eGFR (ml/min/1.73 m2) | 70.3 (42.7–88) | 68.9 (39.3–84.4) | 70.3 (42.7–89.8) | 0.46 |
 Serum creatinine on ward admission (mg/dL) | 1.1 (0.7–1.9) | 1.5 (0.9–2.1) | 1 (0.7–1.7) | 0.1 |
 ED length of stay (days) | 4.5 (3–6) | 4 (3–6) | 5 (3–6) | 0.64 |