Incidence and risk factors of subsyndromal delirium after curative resection of gastric cancer

BMC Cancer

Table 1 The DRS-R-98 scores before and after surgery among the patients

	DRS-R-98 (mean ± SD)
	Preop	POD 1^a	POD 2^a	POD 3^a	POD 7^a
No delirium (n = 143)	1.87 ± 1.67	3.46 ± 1.91	2.74 ± 1.75	2.12 ± 1.92	2.04 ± 1.81
SSD^b (n = 19)	2.31 ± 1.97	7.74 ± 1.73	6.21 ± 2.12	5.28 ± 3.51	4.00 ± 2.92
Number of patients with newly developed SSD at each POD		14 (73.7%)	2 (10.5%)	2 (10.5%)	1 (5.3%)
Number of patients with a DRS-R-98 score ≥ 8 at each POD	2 (1.2%)^c	16 (9.9%)	6 (3.8%)	8 (5.1%)	4 (2.7%)

Abbreviations: DRS-R-98 Delirium Rating Scale-Revised-98, SD standard deviation, preop preoperative, POD postoperative day, SSD subsyndromal delirium
^aMissing data were excluded from the analysis (Number of excluded patients: one at POD 1, five at POD 2, six at POD 3, and 16 at POD 7)
^bPatients with a DRS-R-98 score of < 8 before surgery and a score in the range of 8 to 14 on at least one POD
^cTwo patients with a preoperative DRS-R-98 score of ≥8 were not considered to have SSD

ISSN: 1471-2407