Table 2.

Occurrence of observation sets with and without errors by observation sequence type

	Without errors n (%)		With errors n (%)
Occurring as part of a stable series
Within sequence where EWS values=0	7113	(97.0)	219	(3.0)
Within sequence where EWS values≥1	800	(72.2)	308	(27.8)
Occurring after the end of a stable series
First observation after a sequence where EWS values=0	315	(44.7)	389	(55.3)
First observation after a sequence where EWS values≥1	215	(72.1)	83	(27.9)
Other	2424	(66.6)	1213	(33.4)
Total	10 867	(83.1)	2212	(16.9)

EWS, early warning score.