Relationship between preoperative psychological stress and short-term prognosis in elderly patients with femoral neck fracture

Table 1 General data of patients in the poor and good prognosis groups

Data	Poor prognosis group (n = 28)	Good prognosis group (n = 92)	χ2/t	P value
Sex, n (%)			0.857	0.354
Male	6 (21.43)	28 (30.43)
Female	22 (78.57)	64 (69.57)
Age (mean ± SD, yr)	65.72 ± 4.39	66.35 ± 4.26
Body mass index (mean ± SD, kg/m2)	20.13 ± 2.29	20.06 ± 2.32
Complications, n (%)
Hypertension	6 (21.43)	20 (21.74)	0.001	0.972
Diabetes	5 (17.86)	18 (19.57)	0.040	0.841
Hyperlipidemia	3 (10.71)	15 (16.30)	0.179	0.672
Abnormal liver function	4 (14.29)	16 (17.39)	0.009	0.923
Fracture site, n (%)			0.186	0.666
left side	15 (53.57)	45 (48.91)
right side	13 (46.43)	47 (51.09)
Garden classification of FNF, n (%)			12.179	< 0.001
Type III	5 (17.86)	51 (55.43)
Type IV	23 (82.14)	41 (44.57)
Cause of fracture, n (%)			7.461	0.006
Low-energy damage	5 (17.86)	43 (46.74)
High-energy damage	23 (82.14)	49 (53.26)
FNF reduction quality, n (%)			10.645	0.005
Grade A	8 (28.57)	40 (43.48)
Grade B	5 (17.86)	32 (34.78)
Grade C	15 (53.57)	20 (21.74)
Operational conditions
Operation time (min)	108.62 ± 14.39	107.71 ± 15.02	0.283	0.777
Intraoperative blood loss (mL)	362.22 ± 25.68	359.31 ± 23.47	0.562	0.575
Intraoperative blood transfusion (mL)	283.36 ± 52.47	278.55 ± 55.36	0.407	0.685
Postoperative drainage volume (mL)	173.25 ± 49.62	171.24 ± 51.07	0.184	0.855
Length of hospital stay (d)	21.03 ± 4.71	17.03 ± 4.71	3.935	< 0.001
Intraoperative hypotension			0.076	0.783
Yes	13 (46.43)	40 (43.48)
No	15 (53.57)	52 (56.52)
Postoperative sarcopenia			0.758	0.384
Yes	10 (35.71)	25 (27.17)
No	18 (64.29)	67 (72.83)
Postoperative complications			0.149	0.699
Yes	6 (21.43)	23 (25.00)
No	22 (78.57)	69 (75.00)

FNF: Femoral neck fracture.