The aim of this study is to define the burden of @entity55 requiring hospitalization among adults in Lazio region from 1997 to 1999 and to describe the characteristic of community acquired ( @entity9527 ), suspected nosocomial (NP) and in @entity791 . The data source is the hospital discharge register. 30517 incident episodes of @entity55 hospitalization occurred in the three years period, 20497 @entity9527 , 9760 NP and 964 in @entity791 of which 704 supposed to be acquired in hospital; the mean age is 65, 69 and 38 years respectively. Standardized hospitalization rates for @entity9527 do not show a clear geographical pattern, while for NPs and in @entity791 they are higher in the city of Rome than in the rest of the region. There are peaks of incidence during the winter for CAPs and NPs but not for @entity791 . Only 20% of @entity55 have etiological diagnosis. The proportional analysis of aetiological agents shows: pneumococcus, @entity2782 , staphylococci and @entity683 ; the most frequent comorbidities are: circulatory diseases, @entity1030 ( @entity1030 ), @entity5 and @entity6 . 3.9% of individuals in the study with @entity9527 or NP had more than one episode of @entity55 during the study period, for those with @entity55 in @entity791 this percentage was 14.8. In-hospital lethality is 9.4%, 29.3% and 11.2% for @entity9527 , NP and in @entity791 , respectively. Data from the hospital discharge registers can be used to give a cheap and rapid glimpse to the epidemiology of pathologies frequently requiring hospitalisation neglected from more analytical surveillance systems or registries.

[Hospitalization for XXXX in adults. Lazio, 1997-1999].

@entity2782 :: ('MESH:D011552', 'Disease') :: ['pseudomonas'] @entity6 :: ('MESH:D003920', 'Disease') :: ['diabetes'] @entity55 :: ('MESH:D011014', 'Disease') :: ['pneumonia', 'pneumonias'] @entity5 :: ('MESH:D009369', 'Disease') :: ['malignancies'] @entity1030 :: ('MESH:D029424', 'Disease') :: ['chronic obstructive pulmonary disease', 'COPD'] @entity683 :: ('MESH:D007251', 'Disease') :: ['influenza'] @entity9527 :: ('OMIM:115650', 'Disease') :: ['CAP'] @entity791 :: ('MESH:D000163', 'Disease') :: ['AIDS pneumonia', 'AIDS']
@entity55 :: (MESH:D011014,Disease) :: ['pneumonia']
