Skip to main content
. Author manuscript; available in PMC: 2022 Sep 7.
Published in final edited form as: Pediatrics. 2020 Jun 17;146(1):e20192623. doi: 10.1542/peds.2019-2623

Table 2. Global and Regional Age-Specific Prevalence of and YLD for Intellectual Disability in 2017.

  No. (95% UI)
1–4 y 5–9 y 10–14 y 15–19 y <20 y
High-income North America
  Prevalence 312 301 (242 878–382 044) 406 645 (316 939–500 868) 421 064 (328 142–518 193) 414992 (323 170–511 232) 1 631108 (1 272 711–2 004 735)
    Cases per 100 000 1817 (1413–2223) 1809 (1410–2228) 1789 (1394–2202) 1761 (1372–2170) 1792 (1398–2202)
  YLD 56 625 (42 735–71 313) 75 118 (55 834–96 354) 77 205 (57 942–99 252) 74 525 (55 493–94 510) 296 285 (222 764–374979)
    Rate per 100 000 329 (249–415) 334 (248–429) 328 (246–422) 316 (236–401) 325 (245–412)
Western Europe
  Prevalence 306 760 (244 393–366 154) 407 635 (323 805–486 663) 398 547 (316 114–476 539) 394 895 (315 514–472 494) 1 581 607 (1 257 082–1 888 734)
    Cases per 100 000 1727 (1376–2062) 1733 (1377–2069) 1715 (1360–2051) 1684 (1345–2015) 1714 (1362–2047)
  YLD 58 830 (44 214–76 755) 79 235 (59 655–103 358) 77 719 (58 698–102 767) 76 870 (57 392–100 563) 306 181 (231 706–397 589)
    Rate per 100 000 331 (249–432) 337 (254–439) 334 (253–442) 328 (245–429) 332 (251–431)
Central Europe, Eastern Europe, and Central Asia
  Prevalence 464 555 (372 176–551 946) 566 007 (456 083–671 043) 490 842 (396 378–579 410) 456 221 (369 000–539 606) 2 085 228 (1 684 719–2 467 164)
    Cases per 100 000 2048 (1641–2434) 2058 (1658–2440) 2038 (1646–2406) 1998 (1616–2363) 2036 (1645–2409)
  YLD 96 975 (74084–123 808) 123 931 (93 748–158 428) 108 941 (82 212–141 470) 100 356 (75 919–129 790) 450 975 (344 233–576 327)
Rate per 100 000 428 (327–546) 451 (341–576) 452 (341–587) 440 (333–568) 440 (336–563)
Latin America and the Caribbean
  Prevalence 672 585 (546 288–790 809) 793 565 (640 531–936 587) 771 280 (620 371–911 461) 757 768 (609 956–895 890) 3 170 947 (2 566 782–3 741 437)
    Cases per 100 000 1654 (1343–1944) 1605 (1295–1894) 1565 (1259–1850) 1517 (1221–1794) 1589 (1286–1875)
  YLD 163 130 (122 299–205 398) 192 502 (141 828–249 593) 186 842 (138 637–245 523) 180 520 (133 886–238 899) 765 956 (572 889–985 737)
    Rate per 100 000 401 (301 –505) 389 (287–505) 379 (281–498) 361 (268–478) 384 (287–494)
Southeast Asia, East Asia, and Oceania
  Prevalence 1 989 600 (1 551 695–2 417 553) 2 388 846 (1 858 076–2 909 389) 2 366 591 (1 837 990–2 863 620) 2 342 392 (1 825 186–2 833 713) 9635177 (7 508 265–1 1 680 166)
    Cases per 100 000 1790 (1396–2175) 1770 (1377–2156) 1735 (1348–2100) 1683 (1311–2036) 1745 (1360–21 16)
  YLD 338 527 (261 223–424 819) 409 425 (314267–510283) 406 080 (315 679–509 454) 400 529 (312 259–498 027) 1 647 992 (1 282 960–2 052 003)
    Rate per 100 000 305 (235–382) 303 (233–378) 298 (231–374) 288 (224–358) 299 (232–372)
South Asia
  Prevalence 8 814255 (6 626 639–10 976 227) 10915694 (8 235 801–13 631 549) 10 497 333 (7918 391–13093 706) 10 172 283 (7 644 114–12 708 838) 42 491 040 (31 992 788–53 01 1 21 1)
    Cases per 100 000 6247 (4696–7779) 6093 (4597–7610) 5903 (4453–7363) 5717 (4296–7142) 5990 (4510–7474)
  YLD 810 729 (612 510–1 052 819) 1 038 830 (788 263–1 334037) 1 020 827 (777147–1 297 493) 987 227 (753 048–1 252 961) 4042 934 (3 097 570–5 160 238)
Rate per 100 000 575 (434–746) 580 (440–745) 574 (437–730) 555 (423–704) 570 (437–727)
Sub-Saharan Africa
  Prevalence 3 165 296 (2 481 170–3 837 016) 3 334 212 (2 597 892–4095 851) 2 843 521 (2 215 008–3 491 657) 2 321 894 (1 805 326–2 855 238) 12 578 273 (9 852 736–15 399 332)
    Cases per 100 000 2455 (1924–2976) 2261 (1762–2777) 2179 (1698–2676) 2099 (1632–2581) 2279 (1785–2790)
  YLD 537 270 (403 404–681 216) 502 903 (371 463–654997) 427 855 (318 385–563 513) 344 876 (257 747–450 141) 1 978 503 (1 492 394–2 545 605)
Rate per 100 000 417 (313–528) 341 (252–444) 328 (244–432) 312 (233–407) 358 (270–461)
North Africa and the Middle East
  Prevalence 2 095 975 (1 607 222–2 594440) 2 407 074 (1 843 226–2 986 253) 2 134977 (1 635 729–2 648 684) 1 888 277 (1 448 419–2 345 875) 9 063 331 (6 947 456–11 240448)
    Cases per 100 000 4062 (31 15–5028) 3896 (2984–4834) 3773 (2891–4681) 3596 (2759–4468) 3853 (2954–4779)
  YLD 247 026 (186 292–312 698) 277 132 (211 358–354 743) 244 547 (186 614–310 299) 214982 (164447–274 406) 1 049 302 (801 194–1 335 594)
    Rate per 100 000 479 (361 –606) 449 (342–574) 432 (330–548) 409 (313–523) 446 (341–568)
Global
  Prevalence 18 008 445 (13 909 115–22144997) 21 463 907 (16 582 655–26 376 300) 20 163 862 (15 573 910–24 783 030) 19 007 495 (14 683 193–23 427 643) 83 209 866 (64448 368–102 067 901)
    Cases per 100 000 3318 (2563–4080) 3246 (2508–3989) 3169 (2448–3895) 3083 (2382–3800) 3207 (2484–3934)
  YLD 2 349 727 (1 817 711–2 945 999) 2 754 614 (2 1 18 761–3 466 366) 2 603 898 (2 016 091–3 243 552) 2 437 342 (1 889 411–3 031 441) 10 753 999 (8 286 290–13 378933)
    Rate per 100 000 433 (335–543) 417 (320–524) 409 (317–510) 395 (306–492) 414 (319–516)