Participation in the National Bowel Cancer Screening Program by people with severe mental illness, Australia, 2006–2019: a national data linkage study
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2024
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| author | Steve Kisely Rebecca Seth Susan J Jordan Bradley Kendall Dan J Siskind Grant Sara Justin Chapman Lisa Brophy David M Lawrence |
| author_facet | Steve Kisely Rebecca Seth Susan J Jordan Bradley Kendall Dan J Siskind Grant Sara Justin Chapman Lisa Brophy David M Lawrence Steve Kisely Rebecca Seth Susan J Jordan Bradley Kendall Dan J Siskind Grant Sara Justin Chapman Lisa Brophy David M Lawrence |
| collection | Wiley Open Access |
| contents | Participation in the National Bowel Cancer Screening Program by people with severe mental illness, Australia, 2006–2019: a national data linkage study Steve Kisely Rebecca Seth Susan J Jordan Bradley Kendall Dan J Siskind Grant Sara Justin Chapman Lisa Brophy David M Lawrence Medical Journal of Australia AbstractObjectiveTo compare rates of participation in the National Bowel Cancer Screening Program (NBCSP) and follow‐up for people with severe mental illness with those for people without severe mental illness or not prescribed antidepressants.Study designRetrospective cohort study; analysis of de‐identified linked NBCSP, Pharmaceutical Benefits Scheme (PBS), and Medicare Benefits Schedule (MBS) data.SettingAustralia, 2006–2019.ParticipantsPeople aged 50–74 years (NBCSP‐eligible) with severe mental illness, defined as those dispensed two or more prescriptions for second generation antipsychotics or for lithium (PBS data), and a random sample of people aged 50–74 years eligible for Medicare‐subsidised services but never prescribed psychotropic medications (antipsychotics, lithium, antidepressants).Main outcome measuresNBCSP participation (returned faecal occult blood test sample), valid test result, positive test result, and follow‐up colonoscopy rates.ResultsA total of 119 475 people with severe mental illness and 1 090 574 control group people were included in our analyses. The proportion of women was larger in the severe mental illness group (51.3%) than the control group (48.7%), as were the proportions who lived in inner regional areas (23.5% v 19.1%) or in areas in the lowest socio‐economic quintile (21.8% v 14.7%). The NBCSP participation rate was lower among people with severe mental illness (adjusted incidence rate ratio [IRR], 0.70; 95% confidence interval [CI], 0.69–0.84). The proportion of valid test results was smaller for people with severe mental illness (95.9% v 98.7%; adjusted IRR, 0.97; 95% CI, 0.96–0.99), and the positive test result proportion larger (12.3% v 6.6%; adjusted IRR, 2.01; 95% CI, 1.94–2.09). The proportion of positive test results followed by colonoscopy was smaller for people with severe mental illness (71.7% v 82.6%; adjusted IRR, 0.88; 95% CI, 0.85–0.92).ConclusionsPeople with severe mental illness were less likely to participate in the NBCSP or to undergo colonoscopy after a positive test result than other Australians. These differences may contribute to higher colorectal cancer mortality among people with severe mental illness. The contributions of differences in cancer stage at diagnosis and subsequent treatment to higher colorectal cancer mortality require further study. 10.5694/mja2.52521 http://creativecommons.org/licenses/by-nc/4.0/ |
| doi_str_mv | 10.5694/mja2.52521 |
| format | Artículo Open Access |
| id | wiley_oa_10_5694_mja2_52521 |
| institution | Wiley Open Access |
| license_str_mv | http://creativecommons.org/licenses/by-nc/4.0/ |
| publishDate | 2024 |
| publisher | Wiley |
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| spellingShingle | Participation in the National Bowel Cancer Screening Program by people with severe mental illness, Australia, 2006–2019: a national data linkage study Steve Kisely Rebecca Seth Susan J Jordan Bradley Kendall Dan J Siskind Grant Sara Justin Chapman Lisa Brophy David M Lawrence Medical Journal of Australia Participation in the National Bowel Cancer Screening Program by people with severe mental illness, Australia, 2006–2019: a national data linkage study Steve Kisely Rebecca Seth Susan J Jordan Bradley Kendall Dan J Siskind Grant Sara Justin Chapman Lisa Brophy David M Lawrence Medical Journal of Australia AbstractObjectiveTo compare rates of participation in the National Bowel Cancer Screening Program (NBCSP) and follow‐up for people with severe mental illness with those for people without severe mental illness or not prescribed antidepressants.Study designRetrospective cohort study; analysis of de‐identified linked NBCSP, Pharmaceutical Benefits Scheme (PBS), and Medicare Benefits Schedule (MBS) data.SettingAustralia, 2006–2019.ParticipantsPeople aged 50–74 years (NBCSP‐eligible) with severe mental illness, defined as those dispensed two or more prescriptions for second generation antipsychotics or for lithium (PBS data), and a random sample of people aged 50–74 years eligible for Medicare‐subsidised services but never prescribed psychotropic medications (antipsychotics, lithium, antidepressants).Main outcome measuresNBCSP participation (returned faecal occult blood test sample), valid test result, positive test result, and follow‐up colonoscopy rates.ResultsA total of 119 475 people with severe mental illness and 1 090 574 control group people were included in our analyses. The proportion of women was larger in the severe mental illness group (51.3%) than the control group (48.7%), as were the proportions who lived in inner regional areas (23.5% v 19.1%) or in areas in the lowest socio‐economic quintile (21.8% v 14.7%). The NBCSP participation rate was lower among people with severe mental illness (adjusted incidence rate ratio [IRR], 0.70; 95% confidence interval [CI], 0.69–0.84). The proportion of valid test results was smaller for people with severe mental illness (95.9% v 98.7%; adjusted IRR, 0.97; 95% CI, 0.96–0.99), and the positive test result proportion larger (12.3% v 6.6%; adjusted IRR, 2.01; 95% CI, 1.94–2.09). The proportion of positive test results followed by colonoscopy was smaller for people with severe mental illness (71.7% v 82.6%; adjusted IRR, 0.88; 95% CI, 0.85–0.92).ConclusionsPeople with severe mental illness were less likely to participate in the NBCSP or to undergo colonoscopy after a positive test result than other Australians. These differences may contribute to higher colorectal cancer mortality among people with severe mental illness. The contributions of differences in cancer stage at diagnosis and subsequent treatment to higher colorectal cancer mortality require further study. 10.5694/mja2.52521 http://creativecommons.org/licenses/by-nc/4.0/ |
| title | Participation in the National Bowel Cancer Screening Program by people with severe mental illness, Australia, 2006–2019: a national data linkage study |
| topic | Medical Journal of Australia |
| url | https://onlinelibrary.wiley.com/doi/10.5694/mja2.52521 |