Table 5

Correlation study: E, E_2D, and surgeon level with other outcomes.

	P Value
Correlation	Group A (n = 43)	Group B (n = 27)	Overall (n = 70)
E and age^{^a}	<0.01	0.13	0.31
E and body mass index^{^a}	0.46	0.24	0.20
E and operative time^{^a}	0.28	0.01	0.43
E and imaging duration^{^a}	<0.01	0.06	<0.01
E_2D and imaging duration^{^a}	<0.01	<0.01	<0.01
E and cement amount^{^a}	0.13	0.40	0.41
E_2D and cement amount^{^a}	0.23	0.45	0.55
E and surgeon level^{^b}	0.75	0.72	0.70
E_2D and surgeon level^{^b}	0.71	0.14	0.45
Surgeon level and operative time^{^b}	0.74	0.61	0.41