Table 5. Improvement of menorrhagia based on blood supply equality.

time	equality of blood supply	improvement of menorrhagia			total	χ2	P
		unchanged	improved	percentage of improvement
Short term	equal	56	134	70.5%	190	0.09	0.764
	unequal	10	27	73.0%	37
	total	66	161	70.9%	227
Long term	equal	47	100	68.0%	147	0.321	0.571
	unequal	6	17	73.9%	23
	total	53	117	68.8%	170