A single preoperative low-dose dexamethasone may reduce the incidence and severity of postoperative delirium in the geriatric intertrochanteric fracture patients with internal fixation surgery: an exploratory analysis of a randomized, placebo-controlled trial

Table 4 Comparisons of the incidence and accumulated incidence between the groups on the first five days after surgery

	Comparison of POD incidence				Comparison of POD accumulated incidence
	Placebo	Dexa	P	RR 95% CI	Placebo	Dexa	P	RR 95 CI
Day 0	1 (1.3)	0 (0)	1.000	0.99 (0.96–1.01)	1 (1.3)	0 (0)	1.000	0.99 (0.96–1.01)
Day 1	6 (7.5)	7 (8.8)	0.772	1.01 (0.92–1.11)	7 (8.8)	7 (8.8)	1.000	1.00 (0.91–1.10)
Day 2	5 (6.3)	1 (1.3)	0.212	0.95 (0.89–1.01)	12 (15.0)	8 (10.0)	0.339	0.94 (0.84–1.06)
Day 3	5 (6.3)	0 (0)	0.069	0.94 (0.89–0.99)	17 (21.3)	8 (10.0)	0.05	0.88 (0.76–1.00)
Day 4	2 (2.5)	1 (1.3)	0.084	0.87 (0.75–1.02)	19 (23.8)	9 (11.3)	0.037	0.86 (0.74–0.99)
Day 5	2 (2.5)	0 (0)	1.000	0.99 (0.95–1.03)	21 (26.3)	9 (11.3)	0.015	0.83 (0.71–0.97)

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