Alopecia epidemiology and demographics: Difference between revisions

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* Anagen effluvium is more common in cancer patients receiving treatment with chemotherapeutic agents.
* Anagen effluvium is more common in cancer patients receiving treatment with chemotherapeutic agents.


Additional Sentence 1: The case-mortality rate of [disease name] is approximately [number range] worldwide.
===Prevalence===
Additional Sentence 2: The majority of [disease name] cases are reported in [geographical region].
* Prevalence is defined as the total number of cases of a disease in a given at-risk population at a specific time.
Additional Sentence 3: Patients of all age groups may develop [disease name]
:Note: For diseases specific to one gender, such as prostate cancer, only male patients are considered in the equation since only male patients are the at-risk population.
Additional Sentence 4: [Disease name] is a common/rare disease that tends to affect [patient population 1] and [patient population 2].
*When using numbers with decimal points, avoid reporting more than 1 number after the decimal point. For example, report a prevalence as 10.1 instead of 10.09322. Many numbers after the decimal point may suggest a false sense of accuracy.
Additional Sentence 5: [Gender 1] are more commonly affected with [disease name] than [gender 2]. The [gender 1] to [gender 2] ratio is approximately [number > 1] to 1.
* You can use one or more of these template sentences.
Additional Sentence 6: [Disease name] affects men and women equally.
**Worldwide, the prevalence of (insert disease state here) ranges from a low of _____ per 100,000 persons  to a high of _____ per 100,000 persons with an average prevalence of _____ per 100,000 persons.
Additional Sentence 7: There is no racial predilection to [disease name].
**Worldwide, the prevalence of (insert disease state here) is _____ per 100,000 persons.
Additional Sentence 8: [Disease name] usually affects individuals of the [ethnicity 1] race. [Ethnicity 2] individuals are less likely to develop [disease name].
**In developed countries, the prevalence of (insert disease state here) ranges from a low of _____ per 100,000 persons  to a high of _____ per 100,000 persons with an average prevalence of _____ per 100,000 persons.
Additional Sentence 9: The incidence of [disease name] increases with age; the median age at diagnosis is [#] years.
**In developed countries, the prevalence of (insert disease state here) is _____ per 100,000 persons.
Additional Sentence 10: [Chronic disease name] is usually first diagnosed among [age group].
**In developing countries/ Africa, the prevalence of (insert disease state here) ranges from a low of _____ per 100,000 persons  to a high of _____ per 100,000 persons with an average prevalence of _____ per 100,000 persons.
Additional Sentence 11: [Acute disease name] commonly affects [age group].
**In developing countries/ Africa, the prevalence of (insert disease state here) is _____ per 100,000 persons.
Additional Sentence 12: [Disease name] commonly affects individuals younger than/older than [number of years] years of age.
**In ____ (insert year), the prevalence of _______ (insert disease name) was estimated to be _______ (insert number) cases per 100,000 individuals worldwide.
===Incidence===
* Incidence is defined as the number of new cases per population in a given time period.
*The standard format to report the incidence is ___ per 100,000 individuals.
*When using numbers with decimal points, avoid reporting more than 1 number after the decimal point. For example, report a incidence as 10.1 instead of 10.09322. Many numbers after the decimal point may suggest a false sense of accuracy.
* You can pick one or more of the template sentences below for this section:
**Worldwide, the incidence of (insert disease state here) ranges from a low of _____ per 100,000 persons  to a high of _____ per 100,000 persons with an average incidence of _____ per 100,000 persons.
**Worldwide, the incidence of (insert disease state here) is _____ per 100,000 persons.
**In developed countries, the incidence of (insert disease state here) ranges from a low of _____ per 100,000 persons  to a high of _____ per 100,000 persons with an average incidence of _____ per 100,000 persons.
**In developed countries, the incidence of (insert disease state here) is _____ per 100,000 persons.
**In developing countries/ Africa, the incidence of (insert disease state here) ranges from a low of _____ per 100,000 persons  to a high of _____ per 100,000 persons with an average incidence of _____ per 100,000 persons.
**In developing countries/ Africa, the incidence of (insert disease state here) is _____ per 100,000 persons.
**In ____ (insert year), the incidence of _______ (insert disease name) was estimated to be _______ (insert number) cases per 100,000 individuals worldwide.


Prevalence is defined as the total number of cases of a disease in a given at-risk population at a specific time.
===Case Fatality Rate===
Note: For diseases specific to one gender, such as prostate cancer, only male patients are considered in the equation since only male patients are the at-risk population.
*The case fatality rate is defined the number of deaths (fatality) among patients with the disease (case). Case fatality rate should be distinguished from "Mortality Rate" (defined as the number of deaths among the at-risk population).
When using numbers with decimal points, avoid reporting more than 1 number after the decimal point. For example, report a prevalence as 10.1 instead of 10.09322. Many numbers after the decimal point may suggest a false sense of accuracy.
*The case fatality rate is usually described as a function of time (e.g. In 2015 / annually etc...).
You can use one or more of these template sentences.
*When using numbers with decimal points, avoid reporting more than 1 number after the decimal point. For example, report the case fatality rate as 10.1% instead of 10.09322%. Many numbers after the decimal point may suggest a false sense of accuracy.
Worldwide, the prevalence of (insert disease state here) ranges from a low of _____ per 100,000 persons to a high of _____ per 100,000 persons with an average prevalence of _____ per 100,000 persons.
*You can pick the template sentence below for this section:
Worldwide, the prevalence of (insert disease state here) is _____ per 100,000 persons.
**In ____ (year), the case fatality rate of ____ (disease name) is ____ (case fatality rate in %).
In developed countries, the prevalence of (insert disease state here) ranges from a low of _____ per 100,000 persons to a high of _____ per 100,000 persons with an average prevalence of _____ per 100,000 persons.
**The annual case fatality rate of ____ (disease name) is approximately ____ (case fatality rate in %).
In developed countries, the prevalence of (insert disease state here) is _____ per 100,000 persons.
===Age===
In developing countries/ Africa, the prevalence of (insert disease state here) ranges from a low of _____ per 100,000 persons to a high of _____ per 100,000 persons with an average prevalence of _____ per 100,000 persons.
*This section can describe the impact of the disease depending on the persons age, and the age-specific prevalence and incidence.
In developing countries/ Africa, the prevalence of (insert disease state here) is _____ per 100,000 persons.
*The prevalence of ____ (insert disease state here) increases/decreases with age.
In ____ (insert year), the prevalence of _______ (insert disease name) was estimated to be _______ (insert number) cases per 100,000 individuals worldwide.
*_____ (insert acute disease) commonly affects _____ (insert age group).
Incidence[edit | edit source]
*_____ (insert chronic disease) is usually first diagnosed among _____ (insert age group).
Incidence is defined as the number of new cases per population in a given time period.
 
The standard format to report the incidence is ___ per 100,000 individuals.
===Gender===
When using numbers with decimal points, avoid reporting more than 1 number after the decimal point. For example, report a incidence as 10.1 instead of 10.09322. Many numbers after the decimal point may suggest a false sense of accuracy.
This section describe how prevalence of the disease varies by gender.
You can pick one or more of the template sentences below for this section:
When describing male to female ratios with decimal points, avoid reporting more than 1 number after the decimal point. For example, report a ratio as as 1.5 to 1 instead of 1.48294 to 1. Many numbers after the decimal point may suggest a false sense of accuracy.
Worldwide, the incidence of (insert disease state here) ranges from a low of _____ per 100,000 persons to a high of _____ per 100,000 persons with an average incidence of _____ per 100,000 persons.
You can use either of the following template sentences:
Worldwide, the incidence of (insert disease state here) is _____ per 100,000 persons.
* ______ (insert gender 1) are more commonly affected with ______ (insert disease name) than _____ (insert gender 2). The _____ (insert gender ratio e.g. male to female) ratio is approximately _____ (insert number > 1) to 1.
In developed countries, the incidence of (insert disease state here) ranges from a low of _____ per 100,000 persons to a high of _____ per 100,000 persons with an average incidence of _____ per 100,000 persons.
* The prevalence and incidence of (insert disease state here) does not vary by gender.
In developed countries, the incidence of (insert disease state here) is _____ per 100,000 persons.
* Men and women are affected equally by (insert disease name here).
In developing countries/ Africa, the incidence of (insert disease state here) ranges from a low of _____ per 100,000 persons to a high of _____ per 100,000 persons with an average incidence of _____ per 100,000 persons.
* (Insert disease state here) is more prevalent in men  women.
In developing countries/ Africa, the incidence of (insert disease state here) is _____ per 100,000 persons.
* The prevalence of (insert disease state here) among men is ____ per 100,000, while it is _____ per 100,000 among women.
In ____ (insert year), the incidence of _______ (insert disease name) was estimated to be _______ (insert number) cases per 100,000 individuals worldwide.
* The incidence of (insert disease state here) among men is ____ per 100,000, while it is _____ per 100,000 among women.
 
===Race===
This section describes how the disease differs based upon race.
You can use the following template sentence for this section:
* The prevalence of _____ (insert disease) does not vary by race.
* (Insert disease state here) is more prevalent in the ____ (insert race) race and ____ (insert other race) races.
*There is no racial predilection for ____ (insert disease name)
* _____ (insert disease) usually affects individuals of the _____ (insert race) race. _____ (insert other race) individuals are less likely to develop ______ (disease name).
 
===Developed Countries===
* In this section you should describe the impact of the disease in developed countries.
* Incidence, prevalence, and geographical distribution or areas of interest can be mentioned, as well as the relevant impact the disease has on society.
 
===Developing Countries===
* In this section you should describe the impact of the disease in developing countries.
* Incidence, prevalence, and geographical distribution or areas of interest can be mentioned, as well as the relevant impact the disease has on society.


==References==
==References==

Revision as of 21:00, 15 December 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ogechukwu Hannah Nnabude, MD

Overview

The epidemiology and demographics of alopecia varies by age, race, sex, and health status.

Alopecia epidemiology and demographics

In [year], the incidence/prevalence of [disease name] was estimated to be [number range] cases per 100,000 individuals worldwide.

  • Androgenetic alopecia affects 50% of men and 15% of women, particularly postmenopausal women. [1]
  • In alopecia areata, the prevalence is 0.2% and has no age or sexual predilection. However, it affects white races more than dark races.
  • In telogen effluvium, women are at higher predisposition than men.
  • Tinea capitis has a higher incidence among the pediatric age group and in darker races. [2]
  • Anagen effluvium is more common in cancer patients receiving treatment with chemotherapeutic agents.

Prevalence

  • Prevalence is defined as the total number of cases of a disease in a given at-risk population at a specific time.
Note: For diseases specific to one gender, such as prostate cancer, only male patients are considered in the equation since only male patients are the at-risk population.
  • When using numbers with decimal points, avoid reporting more than 1 number after the decimal point. For example, report a prevalence as 10.1 instead of 10.09322. Many numbers after the decimal point may suggest a false sense of accuracy.
  • You can use one or more of these template sentences.
    • Worldwide, the prevalence of (insert disease state here) ranges from a low of _____ per 100,000 persons to a high of _____ per 100,000 persons with an average prevalence of _____ per 100,000 persons.
    • Worldwide, the prevalence of (insert disease state here) is _____ per 100,000 persons.
    • In developed countries, the prevalence of (insert disease state here) ranges from a low of _____ per 100,000 persons to a high of _____ per 100,000 persons with an average prevalence of _____ per 100,000 persons.
    • In developed countries, the prevalence of (insert disease state here) is _____ per 100,000 persons.
    • In developing countries/ Africa, the prevalence of (insert disease state here) ranges from a low of _____ per 100,000 persons to a high of _____ per 100,000 persons with an average prevalence of _____ per 100,000 persons.
    • In developing countries/ Africa, the prevalence of (insert disease state here) is _____ per 100,000 persons.
    • In ____ (insert year), the prevalence of _______ (insert disease name) was estimated to be _______ (insert number) cases per 100,000 individuals worldwide.

Incidence

  • Incidence is defined as the number of new cases per population in a given time period.
  • The standard format to report the incidence is ___ per 100,000 individuals.
  • When using numbers with decimal points, avoid reporting more than 1 number after the decimal point. For example, report a incidence as 10.1 instead of 10.09322. Many numbers after the decimal point may suggest a false sense of accuracy.
  • You can pick one or more of the template sentences below for this section:
    • Worldwide, the incidence of (insert disease state here) ranges from a low of _____ per 100,000 persons to a high of _____ per 100,000 persons with an average incidence of _____ per 100,000 persons.
    • Worldwide, the incidence of (insert disease state here) is _____ per 100,000 persons.
    • In developed countries, the incidence of (insert disease state here) ranges from a low of _____ per 100,000 persons to a high of _____ per 100,000 persons with an average incidence of _____ per 100,000 persons.
    • In developed countries, the incidence of (insert disease state here) is _____ per 100,000 persons.
    • In developing countries/ Africa, the incidence of (insert disease state here) ranges from a low of _____ per 100,000 persons to a high of _____ per 100,000 persons with an average incidence of _____ per 100,000 persons.
    • In developing countries/ Africa, the incidence of (insert disease state here) is _____ per 100,000 persons.
    • In ____ (insert year), the incidence of _______ (insert disease name) was estimated to be _______ (insert number) cases per 100,000 individuals worldwide.

Case Fatality Rate

  • The case fatality rate is defined the number of deaths (fatality) among patients with the disease (case). Case fatality rate should be distinguished from "Mortality Rate" (defined as the number of deaths among the at-risk population).
  • The case fatality rate is usually described as a function of time (e.g. In 2015 / annually etc...).
  • When using numbers with decimal points, avoid reporting more than 1 number after the decimal point. For example, report the case fatality rate as 10.1% instead of 10.09322%. Many numbers after the decimal point may suggest a false sense of accuracy.
  • You can pick the template sentence below for this section:
    • In ____ (year), the case fatality rate of ____ (disease name) is ____ (case fatality rate in %).
    • The annual case fatality rate of ____ (disease name) is approximately ____ (case fatality rate in %).

Age

  • This section can describe the impact of the disease depending on the persons age, and the age-specific prevalence and incidence.
  • The prevalence of ____ (insert disease state here) increases/decreases with age.
  • _____ (insert acute disease) commonly affects _____ (insert age group).
  • _____ (insert chronic disease) is usually first diagnosed among _____ (insert age group).

Gender

This section describe how prevalence of the disease varies by gender. When describing male to female ratios with decimal points, avoid reporting more than 1 number after the decimal point. For example, report a ratio as as 1.5 to 1 instead of 1.48294 to 1. Many numbers after the decimal point may suggest a false sense of accuracy. You can use either of the following template sentences:

  • ______ (insert gender 1) are more commonly affected with ______ (insert disease name) than _____ (insert gender 2). The _____ (insert gender ratio e.g. male to female) ratio is approximately _____ (insert number > 1) to 1.
  • The prevalence and incidence of (insert disease state here) does not vary by gender.
  • Men and women are affected equally by (insert disease name here).
  • (Insert disease state here) is more prevalent in men women.
  • The prevalence of (insert disease state here) among men is ____ per 100,000, while it is _____ per 100,000 among women.
  • The incidence of (insert disease state here) among men is ____ per 100,000, while it is _____ per 100,000 among women.

Race

This section describes how the disease differs based upon race. You can use the following template sentence for this section:

  • The prevalence of _____ (insert disease) does not vary by race.
  • (Insert disease state here) is more prevalent in the ____ (insert race) race and ____ (insert other race) races.
  • There is no racial predilection for ____ (insert disease name)
  • _____ (insert disease) usually affects individuals of the _____ (insert race) race. _____ (insert other race) individuals are less likely to develop ______ (disease name).

Developed Countries

  • In this section you should describe the impact of the disease in developed countries.
  • Incidence, prevalence, and geographical distribution or areas of interest can be mentioned, as well as the relevant impact the disease has on society.

Developing Countries

  • In this section you should describe the impact of the disease in developing countries.
  • Incidence, prevalence, and geographical distribution or areas of interest can be mentioned, as well as the relevant impact the disease has on society.

References

  1. ↑ Rinaldi F, Marzani B, Pinto D, Sorbellini E (2019). "Randomized controlled trial on a PRP-like cosmetic, biomimetic peptides based, for the treatment of alopecia areata". J Dermatolog Treat. 30 (6): 588–593. doi:10.1080/09546634.2018.1544405. PMID 30513014.
  2. ↑ Owczarczyk-Saczonek A, Wygonowska E, Budkiewicz M, Placek W (2019) Serum sickness disease in a patient with alopecia areata and Meniere' disease after PRP procedure. Dermatol Ther 32 (2):e12798. DOI:10.1111/dth.12798 PMID: 30511475

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