Abstract:
:Several authors have suggested that incidence density should be used in studying nosocomial infection. We assess several risk factors for hospital infection by two ratios, the incidence density ratio (IDR) and the relative risk (RR), in an historical cohort of 843 patients. The variables analyzed were: operation, its length, type of surgical wound, severity of underlying disease, and age. The IDR figures were always lower than those yielded by the RR. For example, the IDR for operated patients was 2.78, whereas RR yielded a figure of 6.46, or the IDR for patients greater than 60 years old was 0.96, whereas the RR achieved a significant value of 1.67. This suggests that the use of IDR to analyze risk factors for nosocomial infection improves comparability of results obtained in different hospital settings. Also, it may allow a more exact quantification of an effect. These facts influence implementation of nosocomial infection control measures.
journal_name
Gac Sanitjournal_title
Gaceta sanitariaauthors
Delgado Rodríguez M,Lardelli Claret P,López Gigosos R,Oliver Yáñez S,Rodríguez-Contreras Pelayo R,Gálvez Vargas Rdoi
10.1016/s0213-9111(90)71036-9subject
Has Abstractpub_date
1990-11-01 00:00:00pages
222-6issue
21eissn
0213-9111issn
1578-1283pii
S0213-9111(90)71036-9journal_volume
4pub_type
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