TABLE 2

P Values Comparing When Students Are Present and When They Are Not, by Department Type

Department	Extremity	Deep-dose equivalent	Lens-dose equivalent	Shallow-dose equivalent
All	0.01206*	0.14676	0.15299	0.15722
Direct supervision	0.09177	0.20746	0.21274	0.21274
Indirect supervision	0.29835	0.03316*	0.03536*	0.04091*

↵* Statistically significant difference (P < 0.05).