CPACC - Module 3: disability demographics and statistics
A study summary of disability demographics and statistics for the CPACC exam — global prevalence, the poverty cycle, aging, and data limitations.
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This is Module 3 of Domain 1 of the CPACC Body of Knowledge — Demographics and Statistics. After the theoretical models and the categories of disability, this module zooms out to the numbers: how many people have disabilities, why the data is collected, what it can’t tell you, and how disability interlocks with poverty and aging.
Why disability statistics matter #
The point of the data is action. Information on people’s functional status is a key input for public policy — health, social protection, housing, transportation, culture, education, and employment (per Eurostat).
Good statistics try to answer questions like (per the University of New Hampshire’s Institute on Disability):
- How many PWD live in each country, region, or worldwide?
- What share of people have which type of disability, by age group?
- How many PWD are employed? How much disposable income do they have?
- How many PWD live in poverty?
Even with their flaws, the numbers are useful background for designing interventions and conveying the scale of an issue.
The limits of the data #
The global picture #
People with disabilities are the world’s largest minority group. According to the WHO, an estimated 1.3 billion people — 16%, or 1 in 6 — experience significant disability. Compared with people without disabilities, they:
- have twice the risk of depression, asthma, diabetes, stroke, obesity, or poor oral health, and face many health inequities;
- find inaccessible and unaffordable transportation 15× more difficult;
- have poorer health outcomes, lower educational attainment, less economic participation, and higher poverty.
Much of this traces back to barriers in accessing services — healthcare, education, employment, transportation, and information — and is worse in disadvantaged communities and conflict zones.
From the UN Fact Sheet on Persons with Disabilities:
- 80% of PWD live in developing countries.
- In most OECD countries, the incidence of disability is greater for women than for men.
- 90% of children with disabilities in developing countries do not attend school.
- The global adult literacy rate is as low as 3% — and just 1% for women with disabilities.
- Higher-education students with disabilities remain under-represented (but rising).
- Unemployment runs as high as 80% in some countries.
Disability and poverty #
The first two goals of the UN’s 2030 Agenda for Sustainable Development aim to end poverty and hunger for all persons with disabilities — because disability and poverty reinforce each other.
- PWD live under the poverty line at higher rates — double, in some countries.
- Food insecurity is worse: in developed countries, the share of PWD who can’t afford a protein meal every second day is almost double; more women than men are affected; PWD households are likelier to lack food.
- Access to financial services (e.g., banks) is restricted by inaccessibility.
- The World Bank estimates 20% of the world’s poorest people have some kind of disability.
Disability accentuates poverty: systemic institutional, environmental, and attitudinal barriers entrench social exclusion — discrimination, marginalization, isolation — and cut off access to education, adequate housing, nutritious food, clean water, sanitation, healthcare, credit, legal and political participation, and meaningful inclusion in the workforce.
Aging and disability #
- The chance of acquiring a disability rises with age.
- Aging affects vision, hearing, muscular strength, bone strength, immunity, and nerve function.
- In countries with life expectancy over 70, people spend on average 8 years living with disabilities.
- The longer someone lives with a disability, the higher their healthcare cost.
Quick self-check #
- How many people globally experience significant disability — and what share is that?
- What share of people with disabilities live in developing countries?
- The global adult literacy rate for people with disabilities can be as low as what — and what figure for women?
- How much harder do people with disabilities find inaccessible/unaffordable transport?
- In countries with life expectancy over 70, how many years on average do people live with disability?
- Name two limitations of disability statistics.
Knowledge check #
Answer each question, then check — the feedback explains every choice.
Study tip: this module is almost pure recall. Memorize the “Key numbers” box, remember that disability and poverty form a reinforcing cycle, and keep the data limitations in mind — they’re a favorite “which is NOT true” question.