Table 7: Multivariate analysis of risk factors of nosocomial infection in geriatric patients.

VariateWald valueOR95% CI

Long-term bed5.1810.0232.4841.135∼5.473
Nutrition scores (≥3)8.844<0.013.4631.527∼7.852
Dysphagia16.898<0.017.9092.951∼21.202
Invasive procedure10.567<0.011.1811.064∼1.507
Length of stay (day)117.953<0.0194.56541.608∼214.921