Table 6.

Intraobserver study of Cobbs’ angle values using small radiographs (Paired t-test)

	N	T values	Significance
Observer 1	40	0.970	<0.001
Observer 2	40	0.956	<0.001
Observer 3	40	0.961	<0.001
Observer 4	40	0.853	<0.001
Observer 5	40	0.942	<0.001
Observer 6	40	0.968	<0.001
Observer 7	40	0.963	<0.001
Observer 8	40	0.956	<0.001