Table 4. Final tuned hyperparameters of the random forest model for each outcome.

Outcome of interest	Random forest hyperparameters
	Max depth	Min samples split	Min samples leaf	Criterion	CCP_alphaa	Max features
EFSb	20	10	16	entropy	0.0	0.7
OSc	20	10	8	entropy	0.01	0.125
GFd	20	20	16	entropy	0.0	0.5
AGVHDe	5	20	8	entropy	0.0	0.5
CGVHDf	15	10	8	entropy	0.0	0.5

^aCCP_alpha: cost complexity pruning alpha.

^bEFS: event-free survival.

^cOS: overall survival.

^dGF: graft failure.

^eAGVHD: acute graft-versus-host disease.

^fCGVHD: chronic graft-versus-host disease.