Appendix Table 1.

Summary of Final Development and External Validation Datasets

		Development Dataset	Validation Dataset
		BrAIST	Sitoula et al.	U of IA	BrAIST
Consented/Reviewed		383	161	122
Braced	> 6 hours per day	−193	−70	−65
< 6 hours per day					−50
Not Considered		−5	−5
Did not reach current study endpoint		−19	−19	−7	−9
No hand film for SMS staging available		−1		−6
			67	44	41
Final samples		115	152