Table 2.

Operation index and clinical efficacy of PFNA and CPH in treating intertrochanteric fractures in the elderly ($\overline{x}$ ±s)

Group	Cases (n)	Operation time (min)	Bleeding volume (ml)	Weight training time (d)	Hospital stay (d)	Harris score
PFNA group	61	53.7 ± 15.2	132.5 ± 33.2	28.2 ± 3.7	7.6 ± 1.8	87.7 ± 7.9
CPH group	47	77.5 ± 16.8	286.3 ± 43.2	3.1 ± 1.2	6.9 ± 2.2	88.3 ± 9.2
t value		7.71	20.93	46.70	1.82	0.36
P value		0.001	0.001	0.001	0.054	0.082