Changing patterns of adult (45–74 years) neurological deaths in the major Western world countries 1979–1997


Pritchard, C., Baldwin, D.S. and Mayers, A.G. (2004) Changing patterns of adult (45–74 years) neurological deaths in the major Western world countries 1979–1997. Public Health, 118, (4), 268-283. (doi:10.1016/j.puhe.2003.07.002).

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Description/Abstract

Objectives: to compare changes in 'adult' (45-74 years) 'all-cause deaths' (ACDs) with all neurological death categories by age and gender in the 10 major Western countries between the 1970s (1979-1981) and the 1990s (1995-1997).

Method: World Health Organization standardized mortality data for age and gender (1979/97) were used to examine changes in adult mortality rates per million based upon ICD-9 categories for ACDs, 'neurological deaths' and the special neurological categories of 'other neurological deaths' (ONDs) and 'mental disorder deaths' (MDDs), which include the dementias. Ratios of ratios were calculated to demonstrate how each individual country's pattern changed over the period by age and gender, resolving the problem of cross-national comparisons. Rates of change across the endpoints and between age groups (45-54, 55-64, 65-74 and 75+ years) were examined using analysis of variance, stepwise regression analysis and cross-tabulation analyses.

Results: meningitis deaths fell substantially, but there was little change in multiple sclerosis or epilepsy deaths. OND rates for the 1990s increased compared with the 1970s rates for males and female, in actual terms and relative to ACDs for almost all countries. Many of the relative rates of increase were substantially higher than 20%. There were significant statistical differences with respect to relative rates of ONDs between the 1970s and the 1990s data, even when the 75+ years age group was excluded. Significant differences were also found between age groups, but only in the 1990s data. MDD rates showed similar trends. Analyses of actual rates of increase in these causes of death showed that males outnumber females in all ages below 74 years. The extent of this difference remained constant across the endpoints. However, in those aged 75 years and over, females outnumbered males at both endpoints, but this disparity widened significantly in the 1990s data.

Conclusions: The 1990s data indicate substantial increases compared with the 1970s data for ONDs (especially amongst 65-74 year olds), and rises in MDDs in 55-64 year olds in five countries, including England and Wales and Germany, and in 65-74 year olds in most countries, suggesting earlier onsets of the underlying conditions. Further country-specific research is required to explain the emerging morbidity and mortality.

Item Type: Article
ISSNs: 0033-3506 (print)
Related URLs:
Keywords: neurological, deaths, international comparisons
Subjects: H Social Sciences > HT Communities. Classes. Races
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Divisions: University Structure - Pre August 2011 > School of Medicine > Clinical Neurosciences
University Structure - Pre August 2011 > School of Medicine > Community Clinical Sciences
ePrint ID: 27694
Date Deposited: 28 Apr 2006
Last Modified: 27 Mar 2014 18:16
URI: http://eprints.soton.ac.uk/id/eprint/27694

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