Table 1. Baseline characteristics of patients in the CtE and RJAH cohorts.

	CtE cohort	RJAH cohort
	n = 137	SDR (n = 15)	No SDR (n = 11)
Mean age at assessment in years (SD)	6.54 (1.92)	6.58 (1.11)	7.41 (1.13)
Mean age at SDR surgery in years (SD)	6.59 (1.92)	7.04 (1.16)	-
GMFCS level II* (number)	38.0% (52)	33.3% (5)	18.2% (2)
Wheelchair/buggy use	67.2%	73.3%	90.9%

*The remaining proportion of the cohort was GMFCS level III.