Table 2.

Summary statistics of the terminal nodes, decision groups and combinations in the final tree

Node h	Node information	Sample size nh =(nh0, nh1)	Preference score† v̂ ± SE‡	AUCs‡ (θ̂ = (θ̂1, θ̂2)	AUC difference Δ θ̂ ± SE	st
QUS preferred subgroup (node 1)		(220, 34)	0.286 ± 0.006	(0.637, 0.726)	−0.089 ± 0.057	−2.037
1	Weight<54.5	(220, 34)	0.286 ±0.006	(0.637, 0.726)	−0.089 ± 0.057	−2.037
No preference subgroup (nodes 2~3 combined)		(469, 92)	0.500 ± 0.003	(0.624, 0.639)	−0.015 ± 0.030	−1.484
2	54.5≤Weight<58.5	(183, 54)	0.456 ± 0.007	(0.656, 0.678)	−0.022 ± 0.042	−1.195
3	Weight≥58.5, Height≥167.5	(286, 38)	0.532 ± 0.005	(0.595, 0.603)	−0.008 ± 0.043	−0.924
DXA preferred subgroup (node 4)		(1262, 245)	0.748 ±0.002	(0.664, 0.600)	0.064 ± 0.021	1.699
4	Weight≥58.5, Height<167.5	(1262, 245)	0.748 ± 0.002	(0.664, 0.600)	0.064 ± 0.021	1.699
Total (nodes 1~4 combined)		(1951, 371)	0.484 ±0.004	(0.653, 0.623)	0.030 ± 0.016	0.013

^†When 2 or more nodes are combined, the weighted AUC or preference score are reported in the table.

^‡SE=Standard Error.