表 3.

基线及3个月复查时两组出血指数结果的比较

Comparison of bleeding index results between two groups at baseline and 3 months

Group	n	Baseline, x±s	3 months later, x±s	Change, x±s	P value
Test group	21	2.95±0.67	2.14±0.97	0.81±0.93	< 0.001
Control group	20	2.75±0.79	2.10±0.72	0.65±0.99	< 0.009
P value		0.38	0.85	0.60