Table 2.

Intra-observer reliability for observer 1

		Intraclass correlation	95% Confidence interval
Cortical index	Single measures	0.7964	0.7395 to 0.8420
	Average measures	0.8867	0.8503 to 0.9142
Cortical thickness	Single measures	0.8269	0.7774 to 0.8662
	Average measures	0.9052	0.8748 to 0.9283
Deltoid tuberosity index	Single measures	0.9488	0.9329 to 0.9610
	Average measures	0.9737	0.9653 to 0.9801