Preoperative anxiety predicted the incidence of postoperative delirium in patients undergoing total hip arthroplasty: a prospective cohort study

Table 3 Postoperative outcomes in two groups

Variables	Anxiety group (n = 95)	Non-anxiety group (n = 230)	p value
Transfusion, n(%)	12/95(12.6%)	32/230(13.9%)	0.759
ICU, n(%)	8/95(8.4%)	33/230(14.3%)	0.588
Hypotension, n(%)	10/95(10.5%)	12/230(5.2%)	0.083
Hematoma, n(%)	2/95(2.1%)	7/230(3.0%)	0.639
Nausea, n(%)	20/95(21.1%)	60/230(26.1%)	0.338
Vomiting, n(%)	9/95(9.5%)	38/230(16.5%)	0.100
Hypothermia, n(%)	11/95(11.6%)	16/230(7.0%)	0.170
VAS,mean (SD)	2.7(1.6)	2.9(1.7)	0.445
Surgery time, min, mean (SD)	75.4(29.0)	80.0(33.7)	0.239
LOS,mean (SD)	6.8(2.6)	6.2(1.8)	0.038

Hypotension, the blood pressures were low above 30% of the baseline or need constrictor support;
Hematoma, the data collected from postoperative clinical records or re-operation for hemostasis;
VAS Visual Analogue Scale, which was assessed at the first postoperative day, MMSE Mini-Mental State Examination, LOS Length of Stay, SD Standard Deviation

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