Table 1.

Demographics of participants

	Study cohort (n=100)	Nurses (n=38)	Anaesthesiologists (n=10)	Obstetricians and gynaecologists (n=36)	Residents (n=16)
Gender, n (%)
Female	77 (77)	35 (93)	1 (10)	28 (77)	13 (81)
Male	23 (23)	3 (7)	9 (90)	8 (23)	3 (19)
Age, median years (IQR)	51 (17.3)	51 (18.3)	50 (7.3)	57 (10)	36 (5.5)
Time in practice, median years (IQR)	24 (17.2)	25 (18.8)	22 (5.8)	27 (9.5)	8 (6)
Days at the operation ward per month, median years (IQR)	10 (15)	16 (5)	20 (4.3)	3 (4)	7 (7)
OR Black Box work experience, n (%)
Yes	0 (0)
No	100 (100)

OR Black Box, Operating Room Black Box.