Variable effects of prevalence-correction of population denominators on differentials in myocardial infarction incidence: a record linkage study in Aboriginal and non-Aboriginal Western Australians
Objectives. To investigate the impact of prevalence correction of population denominators on myocardial infarction (MI) incidence rates, rate ratios, and rate differences in Aboriginal vs. non-Aboriginal Western Australians aged 25–74 years during the study period 2000–2004.Study Design and Setting....
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
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Elsevier
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/29565 |
| _version_ | 1848752838193184768 |
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| author | Katzenellenbogen, Judith Sanfilippo, F. Hobbs, M. Briffa, T. Ridout, S. Knuiman, M. Dimer, L. Taylor, Kate Thompson, P. Thompson, Sandra |
| author_facet | Katzenellenbogen, Judith Sanfilippo, F. Hobbs, M. Briffa, T. Ridout, S. Knuiman, M. Dimer, L. Taylor, Kate Thompson, P. Thompson, Sandra |
| author_sort | Katzenellenbogen, Judith |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Objectives. To investigate the impact of prevalence correction of population denominators on myocardial infarction (MI) incidence rates, rate ratios, and rate differences in Aboriginal vs. non-Aboriginal Western Australians aged 25–74 years during the study period 2000–2004.Study Design and Setting. Person-based linked hospital and mortality data sets were used to estimate the number of prevalent and first-ever MI cases each year from 2000 to 2004 using a 15-year look-back period. Age-specific and -standardized MI incidence rates were calculated using both prevalence-corrected and -uncorrected population denominators, by sex and Aboriginality.Results. The impact of prevalence correction on rates increased with age, was higher for men than women, and substantially greater for Aboriginal than non-Aboriginal people. Despite the systematic underestimation of incidence, prevalence correction had little impact on the Aboriginal to non-Aboriginal age-standardized rate ratios (6% and 4% underestimate in men and women, respectively), although the impact on rate differences was more marked (12% and 6%, respectively). The percentage underestimate of differentials was greater at older ages. Conclusion. Prevalence correction of denominators, while more accurate, is difficult to apply and may add modestly to the quantification of relative disparities in MI incidence between populations. Absolute incidence disparities using uncorrected denominators may have an error >10%. |
| first_indexed | 2025-11-14T08:14:59Z |
| format | Journal Article |
| id | curtin-20.500.11937-29565 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:14:59Z |
| publishDate | 2010 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-295652017-09-13T16:07:33Z Variable effects of prevalence-correction of population denominators on differentials in myocardial infarction incidence: a record linkage study in Aboriginal and non-Aboriginal Western Australians Katzenellenbogen, Judith Sanfilippo, F. Hobbs, M. Briffa, T. Ridout, S. Knuiman, M. Dimer, L. Taylor, Kate Thompson, P. Thompson, Sandra Health inequalities Linked data Aboriginal Prevalence correction Myocardial infarction Objectives. To investigate the impact of prevalence correction of population denominators on myocardial infarction (MI) incidence rates, rate ratios, and rate differences in Aboriginal vs. non-Aboriginal Western Australians aged 25–74 years during the study period 2000–2004.Study Design and Setting. Person-based linked hospital and mortality data sets were used to estimate the number of prevalent and first-ever MI cases each year from 2000 to 2004 using a 15-year look-back period. Age-specific and -standardized MI incidence rates were calculated using both prevalence-corrected and -uncorrected population denominators, by sex and Aboriginality.Results. The impact of prevalence correction on rates increased with age, was higher for men than women, and substantially greater for Aboriginal than non-Aboriginal people. Despite the systematic underestimation of incidence, prevalence correction had little impact on the Aboriginal to non-Aboriginal age-standardized rate ratios (6% and 4% underestimate in men and women, respectively), although the impact on rate differences was more marked (12% and 6%, respectively). The percentage underestimate of differentials was greater at older ages. Conclusion. Prevalence correction of denominators, while more accurate, is difficult to apply and may add modestly to the quantification of relative disparities in MI incidence between populations. Absolute incidence disparities using uncorrected denominators may have an error >10%. 2010 Journal Article http://hdl.handle.net/20.500.11937/29565 10.1016/j.jclinepi.2010.08.008 Elsevier restricted |
| spellingShingle | Health inequalities Linked data Aboriginal Prevalence correction Myocardial infarction Katzenellenbogen, Judith Sanfilippo, F. Hobbs, M. Briffa, T. Ridout, S. Knuiman, M. Dimer, L. Taylor, Kate Thompson, P. Thompson, Sandra Variable effects of prevalence-correction of population denominators on differentials in myocardial infarction incidence: a record linkage study in Aboriginal and non-Aboriginal Western Australians |
| title | Variable effects of prevalence-correction of population denominators on differentials in myocardial infarction incidence: a record linkage study in Aboriginal and non-Aboriginal Western Australians |
| title_full | Variable effects of prevalence-correction of population denominators on differentials in myocardial infarction incidence: a record linkage study in Aboriginal and non-Aboriginal Western Australians |
| title_fullStr | Variable effects of prevalence-correction of population denominators on differentials in myocardial infarction incidence: a record linkage study in Aboriginal and non-Aboriginal Western Australians |
| title_full_unstemmed | Variable effects of prevalence-correction of population denominators on differentials in myocardial infarction incidence: a record linkage study in Aboriginal and non-Aboriginal Western Australians |
| title_short | Variable effects of prevalence-correction of population denominators on differentials in myocardial infarction incidence: a record linkage study in Aboriginal and non-Aboriginal Western Australians |
| title_sort | variable effects of prevalence-correction of population denominators on differentials in myocardial infarction incidence: a record linkage study in aboriginal and non-aboriginal western australians |
| topic | Health inequalities Linked data Aboriginal Prevalence correction Myocardial infarction |
| url | http://hdl.handle.net/20.500.11937/29565 |