Analysis of the preventive effect of evidence-based, non-pharmacological care bundles against delirium in intensive care unit patients

Table 2 Occurrence of delirium, n (%)/mean (interquartile range)

Indicators	Control group (n = 72)	Research group (n = 77)	χ2/Z	P value
Delirium incidence	27 (37.50)	15 (19.48)	5.968	0.015
Time of first delirium occurrence (days)	2.00 (1.00, 3.00)	1.00 (1.00, 1.00)	3.854	< 0.001
Delirium duration (days)	4.00 (2.00, 5.00)	2.00 (2.00, 2.00)	3.789	< 0.001