Development of a risk-adjusted in-hospital mortality prediction model for community-acquired pneumonia: a retrospective analysis using a Japanese administrative database

Table 3 Multivariable predictors of 30-day in-hospital mortality in each scoring system

	Adjusted odds ratio (95% CI)
	A-DROP^amodel	Model 0	Model 1	Model 2
Number of predictors	5	5	5	8
Age ≥65 y		3.35 (2.15-2.97)
Age ≥70 y (male) or Age ≥ 75 y (female)	2.52 (2.15-2.97)
Age ≥80 y			2.00 (1.79-2.23)	2.43 (2.17-2.73)
BUN ≥7.5 mmol/L or Dehydration	2.59 (2.32-2.88)	2.61 (2.32-2.88)	2.59 (2.32-2.88)	2.15 (1.93-2.41)
SpO₂ ≤ 90%	4.29 (3.84-4.79)	4.28 (3.83-4.79)	4.36 (3.90-4.87)	3.47 (3.09-3.89)
Orientation disturbance	2.70 (2.42-3.00)	2.77 (2.49-3.08)	2.62 (2.35-2.91)	2.46 (2.20-2.75)
Systolic BP ≤90 mmHg	4.12 (3.62-4.69)	4.08 (3.58-4.64)	4.18 (3.67-4.76)	3.23 (2.82-3.70)
CRP 200 mg/L or extent of consolidation on chest X-ray ≥2/3 of one lung				2.41 (2.16-2.69)
Mechanical ventilator or Vasopressor				4.18 (3.56-4.92)
Cancer				2.07 (1.81-2.38)
c-statistic	0.853 (0.845-0.861)	0.852 (0.844-0.860)	0.854 (0.846-0.862)	0.874 (0.867‒0.882)

Abbreviations: CI, confidence interval; BUN, blood urea nitrogen; SpO₂, pulse oximetry saturation; BP, blood pressure; CRP, C-reactive protein.
^aA-DROP: A, Age ≥70 y (male), ≥75 y (female); D, BUN ≥7.5 mmol/L; R, SPO₂ < 90%; O, Orientation disturbance; P, Systolic BP <90 mmHg.

ISSN: 1471-2466