It is estimated that 10% of the world's population is affected by mental or neurological disorders and 20% of children and adolescents suffer from some type of mental disorder. The global prevalence of disabilities is 15% overall, with higher rates prevalent within developing countries. The mental and physical disability prevalence for 18 countries has been summarized in this spreadsheet.
In instances where pre-compiled information was not available, the mental and physical disability prevalence has been calculated using the latest available disability and population statistics for each country. Since the total prevalence of disabilities as a percentage of each country's population was most often readily available, these figures were used to calculate the mental and physical disability rates using the number of disabled people identified in the previous research.
Since mental-health related statistics are under-reported in many countries due to social stigma, common mental disorders such as depression or anxiety, have been excluded wherever possible (as per data availability) to present a more comparable range of statistics across the 18 countries.
- Canada: the total disability prevalence was 13.7%, out of which an estimated 7% is suffering from mental illness. Hence, the physical/other disorder prevalence can be calculated to be 6.7% (13.7%-7%)
- USA: 18.7% of people have some sort of disability, and 6.3% of them have a mental disability. Therefore, those with physical/other impairment will be 12.4% (18.7%-6.3%).
- Mexico: 7.5% of the population, which is 9.17 million is disabled. Since 1.44 million people have a cognitive disability, we can calculate its prevalence among the total population as 1.2% (7.5/9.17*1.44). The remaining 6.3% can be taken as those that have physical/other disabilities (7.5%-1.2%).
- Brazil: out of a population of 169.9 million, 2.8 million have a mental disability which is 1.6% (2.8/169.9*100). Since 23.9% have some sort of disability, those that have physical/other impairment will be 22.3%.
- UK: out of the total population of 63.6 million in 2012, 5.3 million had a disability associated with mental health (manual dexterity/memory/learning). This is 8.3% of the total population (5.3/63.6*100). Since 20.7% have some sort of disability, the remaining 12.4% can be considered as those with physical/other disabilities.
- France: the prevalence of mental disorders (12 months) in France is 18.2%, out of which 25%, that is 4.6% (18.2*25%) is considered serious. Since total disability prevalence is 11.1%, the remaining 6.5% (11.1-4.6) are those with physical/other disabilities.
- Spain: the prevalence of mental disorders (12 months) in Spain is 9.6% out of which 25%, that is 2.4% (9.6*25%) is considered serious. Since total disability prevalence is 11.3%, the remaining 8.9% (11.3-2.4) are those with physical/other disabilities.
- Germany: the prevalence of mental disorders (12 months) in Germany is 10.9% out of which 25%, that is 2.7% (10.9*25%) is considered serious. Since total disability prevalence is 16.9%, the remaining 14.2% (16.9-2.7) are those with physical/other disabilities.
- Italy: the prevalence of mental disorders (12 months) in Italy is 8.7% out of which 25%, that is 2.2% (8.7*25%) is considered serious. Since total disability prevalence is 6.1%, the remaining 3.9% (6.1-2.2) are those with physical/other disabilities.
- Russia: 13 million (9%) of the population is living with disabilities while 6 million of them have a mental illness. This equates to 4.2% (9/13*6) of the population being mentally disabled. Therefore, 4.8% (9-4.2) are people with physical/other disabilities.
Asia & Australia
- China: 82.96 million are disabled in China which is 6.34% of the population. 11.68 million are intellectually or mentally disabled (5.54+6.14) accounting for 0.89% (6.34/82.96*11.68) of the population. The remaining 5.45% (6.34-0.89) are those with physical/other disabilities.
- Japan: out of a population of 127 million, 2.5 million are mentally ill and 500,000 are considered mentally disabled, which is a prevalence of 2.4% (3/127*100). 3.5 million, which is 2.8% (3.5/127*100) of the population are physically disabled.
- South Korea: In 2014 South Korea had 2.49 million with a mental or physical disability. Out of those people, 50% have a physical condition which amounts to 1.25 million (2.49*50%). In the same year, the country had a population of 50.7 million. This indicates that the prevalence of physical disabilities (and mental, with 50%) in South Korea is 2.5% (1.25/50.7*100).
- Hong Kong: The total prevalence of mentally disabled individuals can be calculated as 2.1% of the population (1.28+0.74+0.04). Since 5.98% have some sort of disability, those that have physical/other disabilities can be calculated as 3.9% (5.98-2.1).
- India: out of the total disabled population of 26.8 million in 2011, 9% had a mental disability (6%+3%) amounting to 2.4 million. This indicates that 24.4 million have physical/other disabilities (26.8-2.4). In 2011, India's population was 1.25 billion. Hence, the prevalence of mental disability can be calculated as 1.9% (2.4/125*100) which means that the remaining 19.5% (24.4/125*100) have physical/other disabilities.
- Singapore: It is estimated that 3% of the people in Singapore are living with disabilities. Out of the total disabled population, half of them are considered to be disabled physically which indicates a prevalence of 1.5% (3*50%). The remaining 1.5% (3-1.5) have mental disabilities.
- Australia: The disability prevalence in Australia is 18.3%. Out of this, 3% have a serious mental health disorder. Hence, the remaining 15.3% (18.3-3) can be considered as those with physical/other disabilities.