Delgado-Rodríguez M, Bueno-Cavanillas A, López-Gigosos R, de Dios Luna-Castillo J, Guillén-Solvas J, Moreno-Abril O, Rodríguez-Tuñas B, Cueto-Espinar A, Rodríguez-Contreras R, Gálvez-Vargas R
Department of Social and Preventive Medicine, University Hospital of Granada, Facultad de Medicina Avda, Spain.
Eur J Epidemiol. 1990 Mar;6(1):34-9. doi: 10.1007/BF00155546.
This paper addresses the problem of hospital stay length as a risk factor for nosocomial infection and as a modifier of the effect of other risk factors for hospital infection. Patients were selected form two cross-sectional studies done in two different seasons of 1986. Risk of infection rose fairly steadily as hospital stay length increased (correlation coefficient: 0.83, p less than 0.01). Several risk factors (operation, underlying disease, and age) were analyzed on the basis of 1) raw data and 2) data stratified by length of stay. The results showed that hospital stay length is a strong modifier of the remaining risk factors, generally reducing, their effect on the development of hospital infection as length of stay increases.
本文探讨了住院时间作为医院感染风险因素以及作为其他医院感染风险因素效应调节因素的问题。患者选自1986年两个不同季节进行的两项横断面研究。随着住院时间的增加，感染风险相当稳定地上升（相关系数：0.83，p<0.01）。基于1）原始数据和2）按住院时间分层的数据，分析了几个风险因素（手术、基础疾病和年龄）。结果表明，住院时间是其余风险因素的一个强有力的调节因素，一般来说，随着住院时间的增加，其对医院感染发生的影响会降低。
