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Table 1 Characteristics of older patients with community-acquired pneumonia

From: Activity of daily living upon admission is an independent predictor of in-hospital mortality in older patients with community-acquired pneumonia

Characteristic Total patients
n = 4880
Vital status at discharge P value*
Survivors n = 4749 Deceased n = 131
Age, years 72 (68–80) 71 (67–79) 75 (70–84) < 0.001
Male, n (%) 2895 (59.3) 2809 (59.1) 86 (65.6) 0.149
Barthel index (BI) 75 (65–85) 75 (65–85) 45 (20–65) < 0.001
 BI< 60, n (%) 720 (14.8) 629 (13.2) 91 (69.5) < 0.001
 BI≥60, n (%) 4160 (85.2) 4120 (86.8) 40 (30.5)  
Comorbid conditions, n (%)
 Smoking 2336 (47.9) 2268 (47.8) 68 (51.9) 0.425
 COPD 676 (13.9) 656 (13.8) 20 (15.3) 0.609
 Lung cancer 478 (9.8) 455 (9.6) 23 (17.6) 0.004
 Diabetes 1214 (24.9) 1172 (24.7) 42 (32.1) 0.037
 Chronic heart failure 922 (18.9) 893 (18.8) 29 (22.1) 0.365
 Hypertension 2392 (49.0) 2321 (48.9) 71 (54.2) 0.250
 Cerebrovascular disease 330 (6.8) 316 (6.7) 14 (10.7) 0.077
 Chronic renal failure 86 (1.8) 83 (1.7) 3 (2.3) 0.520
 Chronic liver disease 146 (2.9) 145 (3.1) 1 (0.8) 0.188
Clinical symptoms, n (%)
 Fever 1773 (36.3) 1715 (36.1) 58 (44.3) 0.065
 Cough and expectoration 1014 (20.8) 980 (20.6) 34 (25.9) 0.155
 Chest pain 433 (8.9) 427 (8.9) 6 (4.6) 0.086
 Dyspnea 853 (17.5) 816 (17.2) 37 (28.2) 0.002
 Duration of symptoms 6.90 ± 8.78 6.86 ± 9.03 6.93 ± 8.21 0.964
Clinical data, n (%)
 Respiratory failure 210 (4.3) 147 (2.4) 63 (48.1) < 0.001
 NIV/IMV 167 (3.4) 115 (2.4) 52 (39.7) < 0.001
 Impaired consciousness 40 (0.8) 28 (0.6) 12 (9.2) < 0.001
 Respiratory rate ≥ 30/min 66 (1.4) 57 (1.2) 9 (6.9) < 0.001
 Blood pressure SBP < 90 mmHg 26 (0.8) 23 (0.5) 3 (2.3) 0.050
 DBP ≤ 60 mmHg 594 (12.2) 570 (12.0) 24 (18.3) 0.265
 BUN≥7 mmol/L 1531 (31.4) 1405 (29.6) 126 (96.2) < 0.001
 WBC < 4.0 × 109/L or > 10.0 × 109/L 858 (17.6) 807 (17.0) 51 (38.9) < 0.001
 PLT < 10.0 × 109/L 255 (5.2) 210 (4.4) 45 (34.4) < 0.001
Pathogens, n (%)     < 0.001
 Bacterial pneumonia 4144 (84.9) 4050 (85.3) 94 (71.8)  
 Viral pneumonia 62 (1.3) 56 (1.2) 6 (4.6)  
 Fungal pneumonia 146 (3.0) 129 (2.7) 17 (12.9)  
 Mycoplasma pneumonia/Chlamydial pneumonia 528 (10.8) 514 (10.8) 14 (10.7)  
  1. Data are presented as median (interquartile range), mean (standard deviation) or n (%)
  2. COPD chronic obstructive pulmonary disease, IMV invasive mechanical ventilation, NIV non-invasive ventilation, SBP Systolic blood pressure, DBP Diastolic blood pressure, BUN blood urea nitrogen, WBC white blood cell, PLT platelet
  3. *For comparisons between Survivors group and Deceased group