Trends in national incidence, lifetime prevalence and adrenaline prescribing for anaphylaxis in England. Sheikh, A., Hippisley-Cox, J., Newton, J., & Fenty, J. Journal of the Royal Society of Medicine, 101(3):139--143, March, 2008.
doi  abstract   bibtex   
BACKGROUND: Analysis of primary healthcare datasets offers the possibility to increase understanding of the epidemiology of acute uncommon conditions such as anaphylaxis, but these datasets remain under-exploited. AIM: To investigate recent trends in the recorded incidence, lifetime prevalence and prescribing of adrenaline for anaphylaxis in England. METHODS: QRESEARCH is one of the world's largest national aggregated health databases containing the records of over nine million patients. We extracted data on all patients with a recorded diagnosis of anaphylaxis and calculated annual age-sex standardized incidence and lifetime period prevalence rates for each year from 2001-2005. We also analysed trends in adrenaline prescribing in those with a recorded diagnosis of anaphylaxis. National population figures were used to estimate numbers of people in England that have experienced anaphylaxis at some point in their lives. RESULTS: The age-sex standardized incidence of anaphylaxis was 6.7 per 100,000 person-years in 2001 and increased by 19% to 7.9 in 2005. Lifetime age-sex standardized prevalence of a recorded diagnosis of anaphylaxis was 50.0 per 100,000 in 2001 and increased by 51% to 75.5 in 2005. Prescribing of adrenaline increased by 97% over this period. By the end of 2005 there were an estimated 37,800 people that had experienced anaphylaxis at some point in their lives. CONCLUSIONS: Recorded incidence, lifetime prevalence and prescribing of adrenaline for anaphylaxis all showed substantial increases in recent years. An estimated 1 in 1,333 of the English population have at some point in their lives experienced anaphylaxis.
@article{sheikh_trends_2008,
	title = {Trends in national incidence, lifetime prevalence and adrenaline prescribing for anaphylaxis in {England}},
	volume = {101},
	issn = {0141-0768},
	doi = {10.1258/jrsm.2008.070306},
	abstract = {BACKGROUND: Analysis of primary healthcare datasets offers the possibility to increase understanding of the epidemiology of acute uncommon conditions such as anaphylaxis, but these datasets remain under-exploited.
AIM: To investigate recent trends in the recorded incidence, lifetime prevalence and prescribing of adrenaline for anaphylaxis in England.
METHODS: QRESEARCH is one of the world's largest national aggregated health databases containing the records of over nine million patients. We extracted data on all patients with a recorded diagnosis of anaphylaxis and calculated annual age-sex standardized incidence and lifetime period prevalence rates for each year from 2001-2005. We also analysed trends in adrenaline prescribing in those with a recorded diagnosis of anaphylaxis. National population figures were used to estimate numbers of people in England that have experienced anaphylaxis at some point in their lives.
RESULTS: The age-sex standardized incidence of anaphylaxis was 6.7 per 100,000 person-years in 2001 and increased by 19\% to 7.9 in 2005. Lifetime age-sex standardized prevalence of a recorded diagnosis of anaphylaxis was 50.0 per 100,000 in 2001 and increased by 51\% to 75.5 in 2005. Prescribing of adrenaline increased by 97\% over this period. By the end of 2005 there were an estimated 37,800 people that had experienced anaphylaxis at some point in their lives.
CONCLUSIONS: Recorded incidence, lifetime prevalence and prescribing of adrenaline for anaphylaxis all showed substantial increases in recent years. An estimated 1 in 1,333 of the English population have at some point in their lives experienced anaphylaxis.},
	language = {eng},
	number = {3},
	journal = {Journal of the Royal Society of Medicine},
	author = {Sheikh, Aziz and Hippisley-Cox, Julia and Newton, John and Fenty, Justin},
	month = mar,
	year = {2008},
	pmid = {18344471},
	pmcid = {PMC2270246},
	keywords = {Adolescent, Adult, Age Distribution, Aged, Aged, 80 and over, Anaphylaxis, Child, Child, Preschool, England, Epinephrine, Female, Humans, Male, Middle Aged, Physician's Practice Patterns, Prevalence, Sex Distribution, incidence},
	pages = {139--143}
}

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