Table 2.

Comparison of results by quartiles

	First quartile (n=31)	Second quartile (n=31)	Third quartile (n=31)	Fourth quartile (n=32)	P values
Delirium recognised	13 (42%)	16 (52%)	23 (74%)	22 (69%)	0.03
Delirium as discharge diagnosis	9 (29%)	17 (55%)	15 (48%)	20 (62%)	0.052
Delirium described on discharge	18 (58%)	14 (45%)	12 (39%)	18 (56%)	0.37

Delirium recognition improved between the first quartile and the second, third and fourth quartile. There was a trend towards increased documentation of delirium as a discharge diagnosis between the first and the second, third and fourth quartiles.