title: Length of stay and interval to readmission in emergency hospital treatment of COPD.
abstract: BACKGROUND
  increasing attention has recently been attached to the length of hospital stay and related factors in the treatment of COPD.
  
  
  OBJECTIVE
  to assess the trend in the duration of inpatient episodes following emergency admissions for COPD by age and sex, and the frequency of readmissions, as well as the correlations between the frequency and duration of inpatient episodes.
  
  
  METHODS
  retrospective study.
  
  
  METHODS
  the Finnish hospital discharge register.
  
  
  METHODS
  the 72,672 inpatient episodes following emergency admissions of patients aged over 44 years that ended in 1993-2001 and had COPD as the principal diagnosis.
  
  
  RESULTS
  the mean duration of inpatient episodes was 8.5 days (SD 8.2) in 1993, but 6.8 days (SD 6.6) in 2001. The figure for 45- to 64-year-old men was 6.5 days (SD 6.6) and that for men aged >64 years, 7.8 days (SD 6.8). The corresponding figures for women were 7.1 days (SD 6.8) and 8.8 days (SD 8.4). The average interval between the end of one inpatient episode and the beginning of the next was 195.4 days (SD 327.7). This interval was longest when the inpatient episode lasted for 7 days (interval 215 days).
  
  
  CONCLUSIONS
  the length of hospital stay for COPD exacerbation seems to be decreasing, and elderly women have the longest inpatient episodes. With the current treatment modalities, a 1-week stay in hospital results in the longest interval to readmission. The situation may change if supported home care at exacerbation can be increased.
authors.affiliation: Lapland Central Hospital, Department of Pulmonary Diseases, PL 8041, Fin 96101 Rovaniemi, Finland. olli.saynajakangas@fimnet.fi
authors.forename: Olli
authors.initials: O
authors.lastname: Säynäjäkangas
authors.forename: Tuija
authors.initials: T
authors.lastname: Kinnunen
authors.forename: Tuili
authors.initials: T
authors.lastname: Tuuponen
authors.forename: Timo
authors.initials: T
authors.lastname: Keistinen
mesh_terms: D017677:Age Distribution; D000368:Aged; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D005260:Female; D005387:Finland / Q000453:epidemiology; D006801:Humans; D007902:Length of Stay / Q000706:statistics & numerical data* / Q000639:trends; D008297:Male; D008875:Middle Aged; D010359:Patient Readmission / Q000706:statistics & numerical data*; D029424:Pulmonary Disease, Chronic Obstructive / Q000191:economics / Q000453:epidemiology / Q000628:therapy*; D012189:Retrospective Studies; D017678:Sex Distribution; D013997:Time Factors