Effects of preoperative psychological stress on selected parameters in older patients undergoing total hip arthroplasty

Table 1 Comparison of general demographic characteristics, n (%)

Variables	High pressure group (n = 42)	Low pressure group (n = 48)	P value
Age (year)	66.26 ± 4.62	65.72 ± 4.53	0.519
Sex		0.709
Male	29 (69)	32 (67)
Female	13 (31)	16 (33)
BMI (kg/m2)	22.31 ± 5.77	23.74 ± 5.84	0.686
Disease type
Femoral neck fracture	15 (36)	16 (33)	0.881
Rheumatoid arthritis	10 (24)	12 (25)
Osteoarthritis	9 (21)	11 (23)
Other	8 (19)	9 (19)
Complicated with diabetes		0.734
Yes	9 (21)	12 (25)
No	33 (79)	36 (75)
Complicated with hypertension		0.273
Yes	7 (17)	9 (19)
No	35 (83)	39 (81)

BMI: Body mass index.

Table 2 Correlation analysis of preoperative psychological stress with postoperative Harris score and quality of life in elderly patients with total hip arthroplasty

Indexes	Preoperative psychological stress
	r value	P value
Harris score	-0.579	< 0.001
Mental health	-0.652	0.006
Physical function	-0.547	< 0.001
Social function	-0.613	0.041
Physiological role	-0.576	< 0.001
General health	-0.568	< 0.001
Emotional function	-0.572	< 0.001
Physical pain	-0.635	0.032
Vitality	-0.614	< 0.001
Total SF-36 score	-0.636	< 0.001

SF-36: Short form 36 health survey.