Table 1 Incidence n (%) and mean age (SD) at first event for the 4148 participants
Boys (n = 2419) | Girls (n = 1729) | Total (n = 4148) | ||||
|---|---|---|---|---|---|---|
Variable | n (%) | Age mean (SD)a | n (%) | Age mean (SD)a | n (%) | Age mean (SD)a |
First event | ||||||
- Scoliosis | 181 (7.5) | 8.4 (4.9) | 155 (9.0) | 7.9 (5.0) | 336 (8.1) | 8.1 (4.9) |
- Windswept hips (WSH) | 417 (17.2) | 8.0 (5.0) | 270 (15.6) | 8.2 (5.0) | 687 (16.6) | 8.1 (5.0) |
- Tied scoliosis/WSH | 15 (0.6) | 6.2 (4.3) | 21 (1.2) | 6.9 (3.3) | 36 (0.9) | 6.6 (3.7) |
- Censored at surgery | 296 (12.2) | 5.6 (2.8) | 216 (12.5) | 5.4 (2.9) | 512 (12.3) | 5.5 (2.9) |
- No event during follow-up | 1510 (62.4) | 9.1 (5.0) | 1067 (61.7) | 9.0 (5.2) | 2577 (62.1) | 9.0 (5.1) |
GMFCS levela | ||||||
- I | 1115 (46.1) | 9.7 (5.0) | 797 (46.1) | 9.5 (5.1) | 1912 (46.1) | 9.6 (5.0) |
- II | 347 (14.3) | 8.9 (4.7) | 231 (13.4) | 9.1 (5.7) | 578 (13.9) | 9.0 (5.1) |
- III | 235 (9.7) | 8.3 (5.0) | 150 (8.7) | 8.4 (4.6) | 385 (9.3) | 8.3 (4.9) |
- IV | 340 (14.1) | 7.1 (4.4) | 255 (14.7) | 7.4 (4.5) | 595 (14.3) | 7.3 (4.4) |
- V | 382 (15.8) | 5.3 (3.2) | 296 (17.1) | 5.0 (3.2) | 678 (16.3) | 5.2 (3.2) |
CP Subtypeb | ||||||
- Ataxia | 90 (3.7) | 10.7 (4.9) | 88 (5.1) | 11.0 (5.6) | 178 (4.3) | 10.8 (5.3) |
- Dyskinesia | 272 (11.2) | 7.4 (4.7) | 208 (12.0) | 7.9 (5.0) | 480 (11.6) | 7.6 (4.8) |
- Spasticity | 1958 (80.9) | 8.6 (4.9) | 1341 (77.6) | 8.4 (5.0) | 3299 (79.5) | 8.5 (4.9) |
- Unclassified/ Mixed-type | 99 (4.1) | 5.3 (3.7) | 92 (5.3) | 5.3 (3.6) | 191 (4.6) | 5.3 (3.6) |