Table 2.

Sample size of dataset made available for each scale.

Abbreviation	Study Group	Sample size (person measurements)	SMA Type
CHOP-INTEND	PNCRN*	132	1, 2
EK2	Danish Muscle Group, Italian SMA Group, UK Smartnet, PNCRN	154	1, 2, 3
GMFM	AmSMART PNCRN	554	1, 2, 3
HFMS	Italian SMA Group, Hammersmith Clinic/SMAF	390	2, non-ambulant 3
HFMSE	PNCRN	579	1, 2, 3
MFM	MFM Study Group	143	1, 2, 3
MHFMS	Project Cure, SMAF- BforSMA Study	401	2, 3
NSAA for SMA	Smartnet – Part of North Star Clinical Network, UK	48	3
TIMPSI	Project Cure	83	1

^*PNCRN, Pediatric Neuromuscular Clinical Research Network for SMA.