Table 1.

Comparison of NDE scale features between ‘actual’ NDEs and following DMT administration (matched samples) (^∗p < 0.05 uncorrected).

	NDE scale mean scores (SD)		Effect size (Cohen’s d)
Items	NDE	DMT	NDE vs. DMT
Cognitive subscale	3.77 (2.24)	2.15 (1.77)	0.80
Did time seem to speed up or slow down?	1.54 (0.78)	1.15 (0.80)	0.49
Were your thoughts speeded up?	0.69 (0.85)	0.46 (0.66)	0.30
Did scenes from your past come back to you?	0.54 (0.88)	0.15 (0.38)	0.57
Did you suddenly seem to understand everything?	1.00 (0.82)	0.38 (0.77)	0.78
Affective subscale	4.46 (2.57)	4.85 (1.63)	-0.18)
Did you have a feeling of peace or pleasantness?	1.38 (0.77)	1.46 (0.52)	-0.12
Did you have a feeling of joy?	1.00 (0.82)	1.08 (0.49)	-0.11
Did you feel a sense of harmony or unity with the universe?	1.08 (0.76)	1.31 (0.95)	0.00
Did you see, or feel surrounded by, a brilliant light?	1.00 (0.71)	1.00 (0.91)	0.00
‘Paranormal’ subscale	3.62 (1.89)	2.85 (1.52)	0.36
Were your senses more vivid than usual?	1.08 (0.76)	1.38 (0.65)	-0.44
Did you seem to be aware of things going on elsewhere, as if by extrasensory perception (ESP)?	0.38 (0.77)	0.15 (0.38)	0.38
Did scenes from the future come to you?	0.62 (0.77)	0.23 (0.60)	0.56
Did you feel separated from your body?	1.54 (0.78)	1.08 (0.76)	0.60
Transcendental subscale	4.15 (2.30)	3.46 (1.66)	0.34
Did you seem to enter some other, unearthly world?	1.31 (0.85)	1.69 (0.48)	-0.55
Did you seem to encounter a mystical being or presence, or hear an unidentifiable voice?	0.92 (0.95)	1.08 (0.95)	-0.17
Did you see deceased or religious spirits?	0.92 (1.04)	0.46 (0.78)	0.50
Did you come to a border or point of no return?	1.00 (0.82)	0.23 (0.60)	1.07*
Total	16 (6.28)	13.31 (4.55)	0.49