Table 2.

Association between nutritional risk screening score and nonventilator hospital-acquired pneumonia in multivariate logistic regression model

NRS score	Non-adjusted Model		Model I		Model II		Model III
	OR (95% CI)	P value	OR (95% CI)	P value	OR (95% CI)	P value	OR (95% CI)	P value
Continuous, per 1-point increment	2.05(1.92–2.19)	< 0.001	1.74(1.62–1.87)	< 0.001	1.28 (1.18, 1.40)	< 0.001	1.30(1.19–1.43)	< 0.001
Categories
< 3	Ref		Ref		Ref		Ref
≥ 3	7.31(5.86–9.31)	< 0.001	4.39(3.47–5.55)	< 0.001	1.97 (1.52–2.56)	< 0.001	2.06(1.58–2.70)	< 0.001

Abbreviations: OR Odds ratio, CI Confidence interval

Model I: Adjusted for age and sex

Model II: Adjust for variables that, when added to this model, changed in effect estimate of more than 10%, included the covariates in Model I plus stroke, CCI, time of risk, central venous catheter, enteral tube feeding, Barthel Index, and Morse Fall Scale

Model III: Adjust for all of these variables, included the covariates in Model II plus adjusted for drinking status, smoking status, COPD, swallow disability, diabetes mellitus, peptic ulcer disease, moderate or severe renal disease, liver disease, congestive heart failure, solid tumor, admission category, indwelling urinary catheter, surgery, parenteral nutrition, other nosocomial infections, season of admission, antacids, sedatives, NSAID, systemic steroid, Inhaled steroid, and anticoagulant

Note: a total score of≥3 indicated a patient is “at nutritional risk”