Extended Data Table 3 |.

Average Landmark Error (mm) for hip imaging as a mean of 6-fold individual testing on 366 real hip X-ray images

	Landmark Error (mm)		Dice Score
	Mean	CI	Mean	CI
Real	6.46 ± 8.21	0.13	0.79 ± 0.25	0.01
Sim 1k	6.61 ± 7.27	0.26	0.82 ± 0.23	0.01
Sim 2k	6.56 ± 4.78	0.17	0.81 ± 0.24	0.01
Sim 5k	5.82 ± 4.52	0.16	0.82 ± 0.24	0.01
Sim 10k	5.95 ± 3.52	0.13	0.86 ± 0.21	0.01

CI refers to confidence intervals. They are computed using the 2-tailed z-test with a critical value for a 95% level of confidence (p<0.05). The Sim numbers from 1k to 10k in the left most column refer to the size of scaled-up simulation dataset.