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Worldwide, attention-deficit hyperactivity disorder (ADHD) affects about 2.2% of people overall by 2017. This rate fluctuates between .1-8.1%. In Asia, Europe, North and South America, and the Middle East, the range is from .6-7.3%.
Not all countries have published data with ADHD for children younger than six years old. Some places do have records concerning this, however. The percentages equal 1.9% for Norway, 1.8% for Germany and 5.4% for Spain.
The World Health Organization (WHO), also surveyed 20 lower-middle to upper income countries. This revealed the U.S. as having the highest ADHD rate at 8.1% in children and adolescents. The three lowest are Iraq at .1%, Poland at .3% and Romania at .4%. Data from this study comes from as late as 2017.
Country | Prevalent Cases |
---|---|
Belize | 3,452 |
Haiti | 3,422 |
Guyana | 3,229 |
Dominican Republic | 3,167 |
Jamaica | 3,054 |
Suriname | 3,021 |
Grenada | 3,005 |
Bahamas | 2,960 |
Saint Vincent and the Grenadines | 2,901 |
Dominica | 2,888 |
Antigua and Barbuda | 2,816 |
Saint Kitts and Nevis | 2,814 |
Another study, called the European ADORE study, took place over a period of 24 months. It includes research pulled from 10 EU countries ages 6-18 years. Out of 1478 children studied, boys with ADHD totaled 1222, which make up 84.3% of this group, and girls 231, which equals 15.7%.
Gender ratios indicated by countries included in the ADORE study measured 1:3 in females and 1:16 in males. Data reveals more diagnoses of ADHD in adult males than adult females in many locations. However, the ratio of males to females with ADHD has decreased with age.
Country | Prevalent Cases (per 100k pop) | Prevalent Cases (Lower Value) (per 100k pop) | Prevalent Cases (Upper Value) (per 100k pop) |
---|---|---|---|
Belize | 3,452 | 2,511 | 4,682 |
Haiti | 3,422 | 2,478 | 4,645 |
Guyana | 3,229 | 2,362 | 4,371 |
Dominican Republic | 3,167 | 2,323 | 4,267 |
Jamaica | 3,054 | 2,248 | 4,118 |
Suriname | 3,021 | 2,217 | 4,042 |
Grenada | 3,005 | 2,206 | 4,042 |
Bahamas | 2,960 | 2,183 | 3,959 |
Saint Vincent and the Grenadines | 2,901 | 2,135 | 3,878 |
Dominica | 2,888 | 2,123 | 3,864 |
Antigua and Barbuda | 2,816 | 2,079 | 3,766 |
Saint Kitts and Nevis | 2,814 | 2,082 | 3,742 |
Saint Lucia | 2,794 | 2,068 | 3,731 |
Australia | 2,716 | 2,099 | 3,414 |
Trinidad and Tobago | 2,686 | 1,982 | 3,566 |
Venezuela | 2,599 | 1,922 | 3,510 |
Iran | 2,572 | 1,879 | 3,424 |
Barbados | 2,486 | 1,842 | 3,308 |
Cuba | 2,426 | 1,794 | 3,218 |
United States Virgin Islands | 2,403 | 1,775 | 3,179 |
Puerto Rico | 2,385 | 1,768 | 3,168 |
Bolivia | 2,230 | 1,615 | 2,997 |
Ecuador | 2,217 | 1,607 | 2,970 |
Bermuda | 2,156 | 1,602 | 2,818 |
Peru | 2,139 | 1,552 | 2,862 |
Paraguay | 2,074 | 1,489 | 2,753 |
New Zealand | 2,064 | 1,490 | 2,777 |
Spain | 1,897 | 1,401 | 2,474 |
Brazil | 1,825 | 1,329 | 2,511 |
Greenland | 1,796 | 1,303 | 2,412 |
Guatemala | 1,771 | 1,263 | 2,420 |
Honduras | 1,768 | 1,258 | 2,414 |
Nicaragua | 1,713 | 1,223 | 2,332 |
United States | 1,676 | 1,206 | 2,264 |
El Salvador | 1,595 | 1,141 | 2,173 |
Thailand | 1,582 | 1,152 | 2,076 |
Panama | 1,561 | 1,117 | 2,122 |
China | 1,546 | 1,164 | 1,986 |
Canada | 1,531 | 1,120 | 2,063 |
Israel | 1,505 | 1,087 | 2,063 |
Costa Rica | 1,469 | 1,061 | 1,991 |
Brunei | 1,451 | 1,047 | 2,017 |
Turkey | 1,417 | 1,040 | 1,858 |
Ireland | 1,378 | 979 | 1,874 |
Samoa | 1,343 | 936 | 1,874 |
Nauru | 1,338 | 935 | 1,869 |
Solomon Islands | 1,324 | 922 | 1,854 |
Vanuatu | 1,309 | 913 | 1,835 |
Papua New Guinea | 1,287 | 901 | 1,794 |
Micronesia | 1,274 | 897 | 1,766 |
Kiribati | 1,265 | 887 | 1,764 |
Tonga | 1,261 | 880 | 1,761 |
Marshall Islands | 1,257 | 885 | 1,747 |
Norway | 1,236 | 905 | 1,646 |
Iceland | 1,235 | 890 | 1,646 |
American Samoa | 1,228 | 864 | 1,703 |
Tuvalu | 1,227 | 865 | 1,698 |
Colombia | 1,221 | 904 | 1,609 |
Afghanistan | 1,213 | 867 | 1,672 |
Argentina | 1,203 | 872 | 1,607 |
Iraq | 1,191 | 867 | 1,578 |
Tajikistan | 1,181 | 843 | 1,594 |
Sudan | 1,179 | 846 | 1,614 |
Palestine | 1,175 | 844 | 1,607 |
Finland | 1,173 | 867 | 1,559 |
Fiji | 1,163 | 825 | 1,613 |
Tokelau | 1,156 | 811 | 1,607 |
Austria | 1,147 | 844 | 1,544 |
Jordan | 1,143 | 821 | 1,560 |
Qatar | 1,142 | 808 | 1,550 |
North Korea | 1,137 | 805 | 1,510 |
Uzbekistan | 1,133 | 812 | 1,524 |
Mexico | 1,128 | 815 | 1,530 |
Kyrgyzstan | 1,120 | 802 | 1,508 |
Chile | 1,120 | 809 | 1,509 |
Oman | 1,116 | 798 | 1,511 |
Timor Leste | 1,107 | 781 | 1,520 |
Egypt | 1,104 | 794 | 1,509 |
Switzerland | 1,103 | 809 | 1,467 |
France | 1,102 | 782 | 1,470 |
Uruguay | 1,101 | 797 | 1,486 |
Turkmenistan | 1,096 | 788 | 1,470 |
Guam | 1,085 | 771 | 1,500 |
Netherlands | 1,073 | 775 | 1,405 |
Syria | 1,071 | 771 | 1,451 |
Niue | 1,047 | 744 | 1,443 |
Mongolia | 1,041 | 749 | 1,391 |
Philippines | 1,038 | 747 | 1,437 |
Singapore | 1,035 | 755 | 1,397 |
Libya | 1,021 | 732 | 1,372 |
Laos | 1,018 | 724 | 1,388 |
Morocco | 1,008 | 724 | 1,365 |
Azerbaijan | 1,007 | 724 | 1,335 |
Kazakhstan | 1,004 | 722 | 1,340 |
Northern Mariana Islands | 995 | 711 | 1,360 |
Cook Islands | 992 | 705 | 1,364 |
Algeria | 989 | 708 | 1,340 |
Cyprus | 988 | 725 | 1,327 |
Palau | 988 | 708 | 1,343 |
Cambodia | 985 | 704 | 1,344 |
Luxembourg | 980 | 719 | 1,315 |
South Korea | 978 | 723 | 1,294 |
Indonesia | 966 | 697 | 1,336 |
San Marino | 962 | 703 | 1,300 |
Saudi Arabia | 954 | 685 | 1,286 |
Belgium | 953 | 696 | 1,283 |
Lebanon | 949 | 679 | 1,286 |
Kuwait | 945 | 684 | 1,270 |
Bahrain | 943 | 681 | 1,249 |
Maldives | 940 | 666 | 1,279 |
Myanmar | 936 | 671 | 1,274 |
United Kingdom | 929 | 671 | 1,272 |
Andorra | 920 | 673 | 1,226 |
Tunisia | 919 | 659 | 1,238 |
Japan | 906 | 652 | 1,206 |
Armenia | 890 | 640 | 1,173 |
Yemen | 888 | 629 | 1,245 |
Sweden | 888 | 649 | 1,167 |
Malta | 880 | 645 | 1,176 |
Albania | 875 | 631 | 1,154 |
Greece | 865 | 634 | 1,149 |
Portugal | 862 | 633 | 1,149 |
Vietnam | 862 | 620 | 1,167 |
Montenegro | 860 | 620 | 1,128 |
Sri Lanka | 855 | 617 | 1,157 |
Bangladesh | 847 | 607 | 1,169 |
Georgia | 843 | 607 | 1,108 |
North Macedonia | 843 | 606 | 1,099 |
Seychelles | 833 | 601 | 1,126 |
Serbia | 824 | 594 | 1,080 |
Russia | 824 | 594 | 1,103 |
Moldova | 822 | 591 | 1,073 |
Monaco | 800 | 588 | 1,065 |
Pakistan | 798 | 548 | 1,111 |
Ukraine | 792 | 572 | 1,056 |
Equatorial Guinea | 791 | 548 | 1,090 |
Poland | 788 | 567 | 1,050 |
Belarus | 787 | 565 | 1,024 |
Slovakia | 787 | 566 | 1,022 |
Bosnia and Herzegovina | 783 | 563 | 1,018 |
Nigeria | 776 | 537 | 1,081 |
Romania | 774 | 557 | 1,008 |
Mauritius | 770 | 556 | 1,040 |
Estonia | 769 | 553 | 1,003 |
Niger | 754 | 508 | 1,073 |
Croatia | 753 | 541 | 979 |
Czech Republic | 750 | 539 | 976 |
Hungary | 749 | 538 | 972 |
Chad | 748 | 505 | 1,064 |
Lithuania | 744 | 535 | 967 |
Ethiopia | 742 | 507 | 1,040 |
Cameroon | 742 | 504 | 1,050 |
Mali | 741 | 502 | 1,050 |
Latvia | 739 | 531 | 961 |
Malawi | 738 | 511 | 1,019 |
Gambia | 738 | 502 | 1,042 |
Uganda | 737 | 509 | 1,019 |
Guinea Bissau | 735 | 500 | 1,039 |
Senegal | 735 | 499 | 1,040 |
Slovenia | 733 | 528 | 954 |
Mauritania | 732 | 497 | 1,036 |
Benin | 732 | 496 | 1,036 |
Liberia | 731 | 501 | 1,033 |
Somalia | 730 | 505 | 1,006 |
South Sudan | 728 | 502 | 1,011 |
Guinea | 727 | 492 | 1,028 |
Burkina Faso | 726 | 492 | 1,027 |
Kenya | 724 | 499 | 1,014 |
Bulgaria | 724 | 521 | 941 |
Sierra Leone | 723 | 494 | 1,022 |
Sao Tome and Principe | 722 | 495 | 1,021 |
Ivory Coast | 722 | 494 | 1,020 |
Italy | 722 | 518 | 977 |
Togo | 716 | 490 | 1,011 |
Mozambique | 715 | 494 | 988 |
DR Congo | 713 | 497 | 981 |
Zambia | 712 | 497 | 981 |
Eritrea | 711 | 498 | 978 |
Nepal | 709 | 495 | 976 |
Angola | 708 | 490 | 977 |
Madagascar | 704 | 493 | 969 |
Burundi | 698 | 485 | 960 |
Ghana | 696 | 479 | 984 |
Central African Republic | 695 | 485 | 956 |
Rwanda | 693 | 485 | 952 |
Tanzania | 691 | 482 | 951 |
Zimbabwe | 690 | 482 | 949 |
Bhutan | 687 | 483 | 926 |
Denmark | 683 | 490 | 897 |
Eswatini | 683 | 478 | 937 |
Republic of the Congo | 663 | 465 | 908 |
Taiwan | 661 | 483 | 879 |
Lesotho | 658 | 464 | 901 |
Djibouti | 654 | 461 | 893 |
Namibia | 652 | 458 | 896 |
Comoros | 646 | 455 | 885 |
Gabon | 639 | 450 | 879 |
Cape Verde | 634 | 440 | 897 |
Botswana | 628 | 444 | 856 |
India | 620 | 433 | 853 |
South Africa | 595 | 414 | 824 |
Malaysia | 432 | 306 | 592 |
Germany | 411 | 291 | 548 |
United Arab Emirates | 388 | 265 | 536 |
Belize has the highest rate of ADHD, with 3,452 cases per 100k population.
United Arab Emirates has the lowest rate of ADHD, with 388 cases per 100k population.