Reference | Study | Duration | Number of cases of CP | Number of spastic cases of CP | Spastic cases as % of all cases | Unilateral spastic as % of spastic cases | Diplegia as % of spastic cases | Bilateral spastic as % of spastic cases | Diplegia as % of bilateral spastic cases |
---|---|---|---|---|---|---|---|---|---|
*Derived from rates in fig 4 of reference26. | |||||||||
†Includes 11 acquired cases 1979–82. | |||||||||
‡CP type only available in two thirds of cases. | |||||||||
§Includes 68 acquired cases. | |||||||||
26 | North Italy* | 1980–89 | 35 | 45 | 65 | 69 | |||
27, 28 | Denmark | 1979–90 | 908 | 734 | 81 | 23 | 62 | 77 | 81 |
29 | North England | 1991–96 | 537 | 499 | 93 | 37 | 23 | 63 | 36 |
23 | Northeast England | 1980–96 | 380 | 355 | 93 | 42 | 23 | 58 | 40 |
30 | Avon, England | 1979–88 | 237 | 196 | 83 | 39 | 39 | 61 | 63 |
31 | Mersey, England | 1984–89 | 497 | 460 | 93 | 39 | 23 | 61 | 38 |
32 | Atlanta, USA | 1985–87 | 204 | 166 | 81 | 34 | 19 | 66 | 28 |
33, 34, 35 | Sweden† | 1979–90 | 545 | 470 | 86 | 40 | 51 | 60 | 84 |
36 | England and Scotland | 1984–89 | 1649 | 1334 | 81 | 35 | 22 | 65 | 33 |
37 | Slovenia | 1981–90 | 768 | 651 | 85 | 33 | 43 | 67 | 64 |
38 | Western Australia | 1980–94 | 819 | 639 | 78 | 45 | 37 | 55 | 68 |
39 | Rome, Italy | 1977–96 | 282 | 213 | 76 | 33 | 27 | 67 | 40 |
40 | Northern Ireland‡ | 1977–92 | 960 | 572 | 87 | 43 | 21 | 57 | 36 |
41 | Norway | 1980–89 | 46 | 39 | 85 | 49 | 33 | 51 | 65 |
42 | Oxford, England § | 1984–95 | 967 | 806 | 83 | 40 | 60 | ||
Averaged percentage | 85 | 38 | 33 | 62 | 53 | ||||
Range | 76–93 | 23–49 | 19–62 | 51–77 | 28–84 |