Table 2.

Medical-surgical falls, falls with any injury and falls with serious injury frequency and rates

	January 2009–September 2010	January 2015–December 2015	Incident rate ratio (95% CI)
Total number of patient days (PDs)	75 293	42 580
Total number of falls	360	162
Falls per 1000 PD±SD	4.78±0.57	3.80±0.61	0.80 (0.66 to 0.96)
Total injured, n (%)	76 (21%)	26 (16%)
Any injury per 1000 PD±SD	1.01±0.26	0.61±0.15	0.60 (0.38 to 0.94)
No injury, n (%)	284 (79%)	136 (84%)
Minor injury, n (%)	64 (18%)	25 (15%)
Moderate injury, n (%)	5 (1%)	1 (1%)
Major injury, n (%)	7 (2%)	0
Serious injury per 1000 PD±SD	0.159±0.091	0.023±0.042	0.15 (0.01 to 0.85)