Table 2.

The result of general information in the clinical trial.

Outcomes measure	Conventional suction tip 4.00 mm (n=40)	Novel suction tip 5.00 mm (n=40)	t/χ2	p
Age	67.45 (±17.51)	68.12 (±18.22)	0.168	0.867.
Gender			0.125	0.723
Female	35	36
Male	5	4
Body weight (Kg)	64.31 (±15.29)	65.09 (±15.84)	0.224	0.823
Disease			0.057	0.972
Osteoarthritis	25	24
Rheumatoid arthritis	2	2
Avascular necrosis of femoral head	13	14
Brand of artificial prosthesis			0.065	0.968
Zimmer	12	11
Depuy	23	24
Others	5	5