Table 1. Mean values and standard deviations regarding presence and perceived stress concerning simulation I (pre) and II (post).

Groups		Presence			Stress
		M	SD		M	SD
Total	pre	3.41	±1.02		2.82	±0.49
	post	3.40	±1.06		2.58	±0.56
NTS group	pre	3.55	±1.02		2.75	±0.55
	post	3.54	±1.07		2.51	±0.62
Control group	pre	3.23	±1.00		2.90	±0.39
	post	3.22	±1.05		2.68	±0.46

Note: Scale ranges from 0 to 5 for the presence and from 0 to 4 for stress.