Table 3.

Comparison of the suction efficiency and related variables for the novel and conventional suction tips during total hip replacement; data are expressed as χ±s.

Outcomes measure	Conventional suction tip 4.00 mm (n=40)	Novel suction tip 5.00 mm (n=40)	t	p
Frequency of incomplete clogging (time)*	6.18±2.35	6.20±2.34##	0.57	0.57
Time required to clear an incomplete clog (s)	36.45±12.89	23.50±9.28#	8.21	<0.001
Frequency of complete clogging (time)**	3.72±1.89	0#	1.53	<0.001
Frequency of clearing a complete clog (time)	2.70±1.53	0#	1.09	<0.001
Frequency of replacing the suction tip (time)	0.78±0.42	0#	1.59	<0.001
Frequency of replacing the connecting tube (time)	0.25±0.44	0#	0.60	<0.001
Time required to find a way out of complete clog (s)	176.37±64.35	0#	123.52	<0.001
Time required to clear a complete clog (s)	76.00±46.62	0#	11.55	<0.001
Time required to replace the suction tip (s)	71.62±39.15	0#	11.57	<0.001
Time required to replace the connecting tube (s)	28.75±51.20	0#	3.56	<0.001
Surgical duration (min)	70.63±7.70	66.00±7.40#	5.83	<0.001
Blood loss during surgery (ml)	203.76±25.19	190.62±26.51#	5.10	<0.001
Surgeon satisfaction scores	6.60±1.35	9.25±0.54#	12.08	<0.001

^*Solid particles clogged the orifice of the suction tip but were easily cleared without use of a tool.

^**Solid particles clogged the orifice of the suction tip or the soft tube and were cleared by the surgeons with the Kirschner pin or stainless steel wire, or the suction tip or the soft tube need to be replaced.

^#compared with the conventional suction tip, p<0.05;

^##Compared with the conventional suction tip, p>0.05.