Comparison between the Severity Scoring Systems A-DROP and CURB-65 for Predicting Safe Discharge from the Emergency Department in Patients with Community-Acquired Pneumonia
Table 1
Baseline characteristics and outcome measures in patients with community-acquired pneumonia.
Baseline characteristics and outcome measures
N = 408
30-day mortality, N = 6
Revisit within 72 hours, N = 29
Baseline characteristics
Male, N (%)
214 (52.5)
3 (50.0)
17 (58.6)
Female, N (%)
194 (47.5)
3 (50.0)
12 (41.4)
Age (years)
Mean (SD)
67.9 (17.9)
83.3 (12.5)
74.1 (15.1)
Median (IQR)
71 (58–81)
80 (78–94)
77 (63–84)
Age ≥65 years, N (%)
253 (62.0)
6 (100.0)
21 (72.4)
Male ≥70 years and female ≥75 years, N (%)
198 (48.5)
5 (83.3)
18 (62.1)
Comorbidities, N (%)
Neoplastic disease
36 (10.9)
2 (33.3)
2 (6.9)
Chronic lung disease
82 (24.8)
3 (50.0)
4 (13.8)
Congestive heart failure
6 (1.8)
0 (0)
2 (6.9)
Chronic renal disease
40 (12.1)
1 (16.7)
7 (24.1)
Chronic liver disease
20 (6.1)
1 (16.7)
3 (10.3)
CNS disorder
82 (24.8)
3 (50.0)
10 (34.5)
Diabetes
88 (26.7)
1 (16.7)
8 (27.6)
Clinical parameters, N (%)
Orientation disturbance (confusion)
10 (2.5)
0 (0)
2 (6.9)
Systolic blood pressure <90 mm Hg. or diastolic blood pressure ≤60 mm Hg
59 (14.5)
1 (16.7)
3 (10.3)
Pulse rate ≥125 bpm
14 (3.4)
0 (0)
1 (3.5)
Respiratory rate ≥30 BPM
103 (25.2)
5 (83.3)
14 (48.3)
SaO2 ≤ 90% (or PaO2 ≤ 60 mmHg)
28 (6.9)
1 (16.7)
6 (20.7)
Laboratory findings, N (%)
BUN >20 mg/dL
97 (23.8)
4 (66.7)
10 (34.5)
BUN ≥21 mg/dL
89 (21.8)
4 (60.7)
9 (31.0)
Radiographical findings, N (%)
Bilateral lung involvement ≥ two zones involved‡
26 (6.4)
0 (0)
4 (13.8)
Use of antibiotics within the previous 90 days, n (%)
43 (10.5)
0 (0)
2 (6.9)
Outcome measures
Recovery, N (%)
379 (92.9)
Revisit within 72 hours, N (%)
29 (7.1)
Discharged
18 (62.1)
Discharged then died within 30 days
1 (3.4)
Admitted
10 (34.5)
Admitted then died within 30 days
3 (10.4)
30-day mortality, N (%)
6 (1.5)
‡The lungs are divided into five zones: right and left upper, right and left lower, and right middle zones. Abbreviations: BPM, breaths per minute; bpm, beats per minute; BUN, blood urea nitrogen; CNS, central nervous system; IQR, interquartile range; SD, standard deviation.
