Table 1 Characteristics of children with cerebral palsy (CP)

Sex. n (%)

  Boys

2,166 (57.9)

1,981 (58.5)

878 (57.7)

803 (57.9)

749 (58.6)

691 (58.5)

43 (51.8)

39 (55.9)

1,006 (57.2)

718 (56.5)

251 (56.8)

5,093 (57.8)

4,483 (58.0)

  Girls

1,575 (42.1)

1,407 (41.5)

644 (42.3)

584 (42.1)

530 (41.4)

490 (41.5)

39 (48.2)

29 (43.3)

745 (42.5)

545 (43.2)

191 (43.2)

3,724 (42.2)

3,246 (42.0)

Birth year, n (%)

  2002–03

566 (15.1)

474 (14.0)

164 (10.8)

139 (10.0)

56 (4.4)

42 (3.6)

8 (9.6)

6 (9.0)

210 (12.0)

136 (10.8)

52 (11.8)

1,056 (12.0)

849 (11.0)

  2004–05

499 (13.3)

429 (12.7)

177 (11.6)

158 (11.4)

54 (4.2)

46 (3.9)

18 (21.7)

13 (19.4)

256 (14.6)

170 (13.5)

49 (11.1)

1,053 (11.9)

865 (11.2)

  2006–07

573 (15.3)

505 (14.9)

276 (18.1)

244 (17.6)

93 (7.3)

81 (6.9)

12 (14.5)

9 (11.9)

263 (15.0)

179 (14.2)

54 (12.2)

1,271 (14.4)

1,072 (13.9)

  2008–09

549 (14.7)

511 (15.1)

272 (17.9)

244 (17.6)

270 (21.1)

248 (21.0)

9 (10.8)

8 (11.9)

332 (19.0)

228 (18.1)

61 (13.8)

1,493 (16.9)

1,300 (16.8)

  2010–11

538 (14.4)

514 (15.2)

225 (14.8)

211 (15.2)

265 (20.7)

244 (20.7)

19 (22.9)

17 (25.4)

254 (14.5)

190 (15.0)

67 (15.2)

1,368 (15.5)

1,243 (16.1)

  2012–13

453 (12.1)

427 (12.6)

195 (12.8)

189 (13.6)

226 (17.7)

209 (17.7)

10 (13.3)

9 (13.4)

231 (13.2)

183 (14.5)

69 (15.6)

1,184 (13.4)

1,086 (14.1)

  2014–15

386 (10.3)

369 (10.9)

135 (8.9)

128 (9.2)

196 (15.3)

192 (16.3)

5 (6.0)

5 (7.5)

161 (9.2)

137 (10.8)

55 (12.4)

938 (10.6)

886 (11.5)

  2016–17

177 (4.7)

159 (4.7)

78 (5.1)

74 (5.3)

119 (9.3)

119 (10.1)

1 (1.2)

1 (1.5)

44 (2.5)

40 (3.2)

35 (7.9)

454 (5.1)

428 (5.5)

  Total

3,741 (100)

3,388

1,522 (100)

1,387

1,379 (100)

1,181

88 (100)

68

1,751 (100)

1,263

442 (100)

8,817 (100)

7,729 (100)

GMFCS levels, n (%)

  I

1,659 (44.3)

1,508 (44.5)

805 (52.9)

715 (51.6)

657 (51.4)

601 (50.9)

33 (42.2)

25 (36.8)

668 (38.0)

413 (32.5)

189 (42.8)

4,011 (45.5)

3,451 (45.8)

  II

580 (15.5)

516 (15.2)

255 (16.8)

238 (17.2)

204 (15.9)

197 (16.7)

18 (21.7)

17 (25.0)

355 (20.2)

238 (18.7)

97 (21.9)

1,509 (17.1)

1,303 (16.9)

  III

329 (8.8)

318 (9.4)

103 (6.8)

98 (7.1)

84 (6.6)

84 (7.1)

10 (12.0)

9 (13.2)

162 (9.2)

150 (11.8)

39 (8.8)

727 (8.2)

698 (9.0)

  IV

518 (13.8)

494 (14.6)

141 (9.3)

134 (9.7)

137 (10.7)

132 (11.2)

14 (15.7)

13(17.6)

233 (13.2)

199 (15.7)

55 (12.4)

1,098 (12.4)

1,027 (13.3)

  V

598 (16.0)

552 (16.3)

203 (13.3)

192 (13.8)

195 (15.2)

165 (13.7)

4 (6.0)

4 (7.4)

341 (19.4)

270 (21.3)

56 (12.7)

1,397 (15.9)

1,239 (16.0)

  Unclassified

57 (1.5)

0 (0)

15 (1.0)

10 (0.7)

2 (0.2)

2 (0.2)

0 (0)

(0)

0 (0)

0 (0)

6 (1.4)

80 (0.9)

18 (0.2)