[Retracted] Efficacy of Intramedullary Nailing in the Treatment of Comminuted Proximal Humeral Fractures and Its Influence on Shoulder Joint Function Recovery

Table 1

Baseline data of patients in two groups (n (%), mean ± SD).

Variables	n	Control group (n = 28)	Research group (n = 32)	χ^2/t
Gender				0.005	0.945
Male	26	12 (42.86)	14 (43.75)
Female	34	16 (57.14)	18 (56.25)
Age (years)				2.188	0.139
<65	24	14 (50.00)	10 (31.25)
≥65	36	14 (50.00)	22 (68.75)
Average age (years)	60	66.62 ± 8.41	68.91 ± 9.42	0.987	0.328
Course of disease (d)	60	3.50 ± 1.30	4.12 ± 1.23	1.897	0.063
Etiology				1.538	0.464
Fall	38	20 (71.43)	18 (56.25)
Car accident	13	5 (17.86)	8 (25.00)
Crushing	9	3 (10.71)	6 (18.75)
Neer classification				0.179	0.673
III	36	16 (57.14)	20 (62.50)
IV	24	12 (42.86)	12 (37.50)
History of bone fracture				0.449	0.503
No	47	23 (82.14)	24 (75.00)
Yes	13	5 (17.86)	8 (25.00)
History of drinking				0.837	0.360
No	40	17 (60.71)	23 (71.88)
Yes	20	11 (39.29)	9 (28.13)
Residence				0.805	0.370
Urban	46	20 (71.43)	26 (81.25)
Rural	14	8 (28.57)	6 (18.75)
Marital status				0.625	0.429
Single	18	7 (25.00)	11 (34.38)
Married	42	21 (75.00)	21 (65.63)