Stroke in Lund-Orup, Sweden: improved long-term survival among elderly stroke patients.

Abstract

BACKGROUND AND PURPOSE:

Several studies report declining early stroke case fatality, but the findings are not consistent across geographic areas. Corresponding changes in long-term survival are less well documented. We recently reported increased stroke incidence among patients aged <75 years and stable incidence among older persons. We now report temporal trends for early and late case fatality among patients with stroke onset during 1983-1985 and 1993- 1995.

METHODS:

Patients living within the Lund-Orup, Sweden, hospital district and fulfilling the diagnostic criteria for first-ever stroke during 1983-1985 (n=998) and 1993-1995 (n=1318) were followed up concerning survival status at 28 days, 1 year, and 3 years. Age and sex adjustments were performed. The possible influence of Oxfordshire Community Stroke Project (OCSP) stroke subtypes on survival was also analyzed.

RESULTS:

Overall survival improved between the study periods (Cox proportional hazards regression: hazard ratio, 0.84; 95% confidence limits, 0.75 to 0.94; P=0.0019). The 28-day case fatality was 15% for stroke patients from both study periods. One-year case fatality was 31% for 1983-1985 patients and 27% for 1993-1995 patients. The corresponding figures at 3 years were 44% and 40%, respectively. In the group aged <75 years, there were no significant changes in overall survival, but survival improved significantly among patients aged > or = 75 years beyond 28 days after stroke onset. OCSP stroke subtype was an independent predictor of death (P<0.0001).

CONCLUSIONS:

The recently observed increase in stroke incidence among patients aged <75 years was not accompanied by changing survival in that age group. However, among patients aged > or =75 years, survival improved beyond 28 days after stroke. The causes of this change in survival are unknown but may be related to improved long-term care of elderly stroke patients.

• Authors: Björn Hallström, Bo Norrving, Arne Lindgren
• Journal: Stroke (Stroke) Vol. 33 Issue 6 Pg. 1624-9 (Jun 2002) ISSN: 1524-4628 [Electronic] United States
• PMID: 12053002 (Publication Type: Journal Article)

Topics

• Age Distribution
• Aged
• Aged, 80 and over
• Female
• Follow-Up Studies
• Humans
• Male
• Middle Aged
• Proportional Hazards Models
• Regression Analysis
• Stroke (classification, mortality)
• Survival Rate
• Survivors (statistics & numerical data)
• Sweden (epidemiology)