Table 1.

General characteristics of the 60 hospitals

Characteristics		n (%)
Type	Tertiary general hospital	23 (38.3)
	Non-tertiary general hospital	37 (61.7)
Ownership	Private	34 (56.7)
	Public	26 (43.3)
Bed-to-nurse ratio	< 3.0	10 (16.7)
	3.0-3.4	20 (33.3)
	3.5-3.9	10 (16.7)
	≥4.0	20 (33.3)
		Mean±SD	Percentile 25	Percentile 75
Nurse-perceived patient adverse events (%)1	Medication errors	33.3±13.6	23.3	44.9
	Patients falls	60.5±15.2	50.4	73.6
	Nosocomial infections	51.7±13.5	43.9	62.1
	Pressure sores	42.6±16.8	30.8	53.3
Korean general unit-nursing work index	Participation in the decision-making process	1.93±0.18	1.78	2.03
	Nursing process	2.60±0.22	2.45	2.75
	Nurse-staffing adequacy	1.64±0.20	1.51	1.78
	Education to improve the quality of care	2.13±0.24	1.96	2.30
	Organizational support and management of the hospital	2.25±0.26	2.05	2.44
	Doctor-nurse relationship	2.25±0.16	2.15	2.37

¹Nurses were asked whether any adverse events involving them or their patients had occurred occasionally or frequently in the past year.