|  | Before intervention (2011) | After intervention (2012) | P-values | ||
---|---|---|---|---|---|---|
 |  | Number | % | Number | % | |
High-risk patients | 88 | 47.0 | 99 | 53.0 | Â | |
Delirium patients | 19 | 21.6 | 9 | 9.10 | 0.01 | |
Sex | Male | 57 | 64.7 | 63 | 63.6 | 0.87 |
Female | 31 | 35.3 | 36 | 36.4 | ||
Mean age | 71.9 (30-88) | 73.8 (34-87) | 0.16 | |||
Age(>70) | 67 | 76.1 | 84 | 84.8 | 0.13 | |
Past history of cephalopathy | 26 | 29.5 | 28 | 28.3 | 0.85 | |
Past history of delirium | 10 | 11.4 | 19 | 19.2 | 0.14 | |
Cognitive decline | 5 | 5.7 | 9 | 9.1 | 0.38 | |
Alcoholism | 10 | 11.4 | 15 | 15.2 | 0.45 |