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

BMC Pulmonary Medicine

Table 4 A comparison of patients’ characteristics with and without help feeding

	Feeding
	Independent	Requires help
Characteristic	(n = 40,442)	(n = 8,928)
Personal characteristics
Female sex	18,194 (45.0)	3,106 (34.8)
Age, mean years ± SD	47.8 ± 13.8	50.2 ± 14.3
Body mass index, mean ± SD	22.0 ± 4.5	19.8 ± 5.4
Charlson comorbidity index, mean ± SD	0.9 ± 1.3	1.0 ± 1.3
Barthel index, mean ± SD	96.1 ± 11.6	15.1 ± 23.1
Pneumonia severity^a
Mild	31,983 (79.1)	5,111 (57.3)
Moderate	8,239 (20.4)	3,473 (38.9)
Severe	175 (0.4)	236 (2.6)
Extremely severe	45 (0.1)	108 (1.2)
Pneumonia aetiology^b
Pneumococcal	3,789 (9.4)	603 (6.8)
Mycoplasmal	4,770 (11.8)	240 (2.7)
Aspiration	758 (1.9)	2,828 (31.7)
Influenza	137 (0.3)	30 (0.3)
Outcome after hospitalisation
Died within 30 days	252 (0.6)	480 (5.4)
Length of stay (days), mean ± SD	11.3 ± 14.0	26.2 ± 61.1
ICU admission	229 (0.6)	439 (4.9)

Definition of abbreviations: SD standard deviation, ICU intensive care unit
Data are n (%) of patients, unless noted otherwise
^aThe pneumonia severity was evaluated using the A-DROP scoring system, which 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). Scoring: 0 = mild, 1–2 = moderate, 3 = severe, and 4 = extremely severe
^bThe percentages are not equal to 100 % because other bacterial or viral and unspecified bacterial pneumonia are excluded from this table

ISSN: 1471-2466