Characteristic | Negative cultures* (N=4287) | Positive cultures (N=598) | Total (N=4885) |
Age, years | |||
Median (IQR) | 66 (51–75) | 70 (59–79) | 66 (52–76) |
Sex | |||
Male | 56.3% | 62.2% | 57.0% |
Modified Early Warning Score | |||
Median (IQR) | 3 (2–4) | 4 (2–5) | 3 (2–4) |
Missing (N) | 2515 | 351 | 2866 |
Heart rate (beats per minute) | |||
Median (IQR) | 94 (82–107) | 100 (88–111) | 95 (82–108) |
Missing (N) | 181 | 15 | 196 |
Systolic blood pressure (mm Hg) | |||
Median (IQR) | 126 (112–142) | 118 (104–136) | 125 (111–141) |
Missing (N) | 372 | 36 | 408 |
Respiratory rate (per minute) | |||
Median (IQR) | 19 (15–23) | 21 (16–25) | 19 (15–24) |
Missing (N) | 1310 | 149 | 1459 |
Temperature (degree celsius) | |||
Median (IQR) | 37.8 (37.0–38.5) | 38.1 (37.2–38.8) | 37.8 (37.0–38.5) |
Missing (N) | 198 | 26 | 224 |
C reactive protein (µmol/L) | |||
Median (IQR) | 60 (25–134) | 104 (39–216) | 64 (25–144) |
Missing (N) | 132 | 23 | 155 |
Whitecell counts (109 /L) | |||
Median (IQR) | 10 (6.8–13.8) | 11.9 (8.2–16.0) | 10.2 (6.9–14.2) |
Missing (N) | 144 | 22 | 166 |
Thrombocyte counts (109 /L) | |||
Median (IQR) | 234 (174–311) | 211 (149–273) | 231 (171–307) |
Missing (N) | 593 | 105 | 698 |
Bilirubin (µmol/L) | |||
Median (IQR) | 9 (6–13) | 13 (8–22) | 9 (6–14) |
Missing (N) | 1205 | 163 | 1368 |
Creatinine (µmol/L) | |||
Median (IQR) | 82 (65–113) | 105 (73–160) | 84 (66–119) |
Missing (N) | 171 | 27 | 198 |
Length of ED stay (hours) | |||
Median (IQR) | 4.3 (3.2–5.8) | 4.7 (3.3–6.3) | 4.4 (3.2–5.9) |
Hospital admission | |||
Admitted | 68.0% | 84.6% | 70.0% |
30-day mortality | |||
Died | 6.7% | 11.5% | 7.3% |
*Likely contaminants are classified as negative cultures in this table.
ED, emergency department.