Impact of lipid-lowering therapy on the prevalence of dyslipidaemia in patients at high-risk of cardiovascular events in UK primary care - a retrospective database study. Jameson, K., Amber, V., D'Oca, K., Mills, D., Giles, A., & Ambegaonkar, B. International Journal of Clinical Practice, 67(12):1228--1237, December, 2013.
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AIMS: To estimate the prevalence of dyslipidaemias in high-risk patients new to lipid-modifying therapy (LMT), and establish the extent to which these lipid abnormalities are addressed by treatment in UK clinical practice. METHODS: The PRIMULA study was a retrospective analysis, conducted using the UK General Practice Research Database. Two periods were studied as follows: a pretreatment period, defined as the 12 months before initiation of LMT (the index date), and a follow-up period of at least 12 months. Patients included in the study (n = 25,011) had dyslipidaemia with at least one abnormal lipid measurement [total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C) or triglycerides (TG)] in the pretreatment period. All patients were at high risk of cardiovascular events, which was defined as having a history of cardiovascular disease, a 10-year Framingham risk score higher than 20%, diabetes or hypertension, as defined by the Joint British Societies 2 guidelines. RESULTS: At the index date, 98% of patients were initiated on statin monotherapy. After 12 months of treatment, 15.2% (sub-group range: 11.0-22.9%) of all high-risk patients had no lipid abnormalities. The proportions of patients with high TC or LDL-C levels decreased from 98.8% to 68.9%, and from 99.2% to 68.7%, respectively, over 12 months. The prevalence of high TG levels decreased from 45.0% to 26.9%, whereas that of low HDL-C levels increased, from 16.6% to 18.0%. Risk factors for cardiovascular events were not consistently associated with the likelihood of attaining optimal lipid levels. CONCLUSIONS: Despite widespread use of statins, many individuals at high risk of cardiovascular events have persistently abnormal lipid levels, with over two-thirds of patients not achieving target levels of LDL-C or TC. Management of dyslipidaemia is therefore suboptimal in this important high-risk group in UK standard practice.
@article{jameson_impact_2013,
	title = {Impact of lipid-lowering therapy on the prevalence of dyslipidaemia in patients at high-risk of cardiovascular events in {UK} primary care - a retrospective database study},
	volume = {67},
	issn = {1742-1241},
	doi = {10.1111/ijcp.12238},
	abstract = {AIMS: To estimate the prevalence of dyslipidaemias in high-risk patients new to lipid-modifying therapy (LMT), and establish the extent to which these lipid abnormalities are addressed by treatment in UK clinical practice.
METHODS: The PRIMULA study was a retrospective analysis, conducted using the UK General Practice Research Database. Two periods were studied as follows: a pretreatment period, defined as the 12 months before initiation of LMT (the index date), and a follow-up period of at least 12 months. Patients included in the study (n = 25,011) had dyslipidaemia with at least one abnormal lipid measurement [total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C) or triglycerides (TG)] in the pretreatment period. All patients were at high risk of cardiovascular events, which was defined as having a history of cardiovascular disease, a 10-year Framingham risk score higher than 20\%, diabetes or hypertension, as defined by the Joint British Societies 2 guidelines.
RESULTS: At the index date, 98\% of patients were initiated on statin monotherapy. After 12 months of treatment, 15.2\% (sub-group range: 11.0-22.9\%) of all high-risk patients had no lipid abnormalities. The proportions of patients with high TC or LDL-C levels decreased from 98.8\% to 68.9\%, and from 99.2\% to 68.7\%, respectively, over 12 months. The prevalence of high TG levels decreased from 45.0\% to 26.9\%, whereas that of low HDL-C levels increased, from 16.6\% to 18.0\%. Risk factors for cardiovascular events were not consistently associated with the likelihood of attaining optimal lipid levels.
CONCLUSIONS: Despite widespread use of statins, many individuals at high risk of cardiovascular events have persistently abnormal lipid levels, with over two-thirds of patients not achieving target levels of LDL-C or TC. Management of dyslipidaemia is therefore suboptimal in this important high-risk group in UK standard practice.},
	language = {eng},
	number = {12},
	journal = {International Journal of Clinical Practice},
	author = {Jameson, K. and Amber, V. and D'Oca, K. and Mills, D. and Giles, A. and Ambegaonkar, B.},
	month = dec,
	year = {2013},
	pmid = {23944233},
	pmcid = {PMC4232237},
	keywords = {Adult, Aged, Cardiovascular Diseases, Cholesterol, HDL, Cholesterol, LDL, Cross-Sectional Studies, Dyslipidemias, Female, Great Britain, Humans, Hypolipidemic Agents, Male, Middle Aged, Prevalence, Retrospective Studies, Risk Factors},
	pages = {1228--1237}
}

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