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Table 2 Pneumonia characteristics and mortality

From: A mortality prediction rule for non-elderly patients with community-acquired pneumonia

Characteristic

No. of cases (%)

No. (%) of cases alive at 30 days

No. (%) of cases that died within 30 days

(n = 49,370)

(n = 48,638)

(n = 732)

Parameters of the A-DROPa

 Confusion

927 (1.9)

832 (1.7)

95 (13.0)

 Dehydration

3,390 (6.9)

3,255 (6.7)

135 (18.4)

 Respiratory failure

3,940 (8.0)

3,779 (7.8)

161 (22.0)

 Low blood pressure

6,697 (13.6)

6,353 (13.1)

344 (47.0)

Pneumonia severityb

 Mild

37,094 (75.1)

36,845 (75.8)

249 (34.0)

 Moderate

11,712 (23.7)

11,308 (23.2)

404 (55.2)

 Severe

411 (0.8)

367 (0.8)

44 (6.0)

 Extremely severe

153 (0.3)

118 (0.2)

35 (4.8)

Pneumonia aetiology

 Pneumococcal

4,392 (8.9)

4,361 (9.0)

31 (4.2)

 Mycoplasmal

5,010 (10.1)

5,004 (10.3)

6 (0.8)

 Aspiration

3,586 (7.3)

3,425 (7.0)

161 (22.0)

 Influenza

167 (0.3)

164 (0.3)

3 (0.4)

 Othersc

36,215 (73.4)

35,684 (73.4)

531 (72.5)

  1. aA-DROP assesses confusion, dehydration (the existence of a clinical sign of dehydration or blood urea nitrogen level ≥210 mg/L), respiratory failure (SpO2 ≤ 90 % or PaO2 ≤ 60 mmHg), and a low blood pressure (systolic blood pressure ≤90 mmHg). Age was excluded from this table because all patients were <65 years
  2. bThe pneumonia severity was evaluated using the A-DROP scoring system. Scoring: 0 = mild, 1–2 = moderate, 3 = severe, and 4 = extremely severe
  3. cThis group includes other bacterial or viral and unspecified bacterial pneumonia