Table 1 Nurse staffing per shift by unit organisational type.

	Registered nurses	Nurse provision ratio	Specialist nurse provision ratio
	Median (IQ range)	Median (IQ range)	Median (IQ range)
Total	4 (2)	0.92 (0.36)	1.33 (1.0)
Unit Volume Type
High	6 (2)	0.93 (0.34)	1.33 (1.0)
Medium	4 (2)	0.92 (0.35)	1.33 (1.0)
Low	3 (2)	0.91 (0.36)	1.20 (1.2)
	p⩽0.001*	p⩽0.001*	p⩽0.01*
Unit Consultant Availability
High	4 (3)	0.93 (0.36)	1.33 (1.1)
Low	3 (1)	0.91 (0.36)	1.33 (1.0)
	p⩽0.001†	p⩽0.001†	P = 0.06†
Unit Nursing Establishment
High	4 (2)	0.96 (0.36)	1.33 (1.0)
Low	4 (2)	0.89 (0.33)	1.33 (1.0)
	p⩽0.001†	p⩽0.001†	P = 0.07†

Statistical Test: * Kruskal Wallis Test, †Mann Whitney U Test