[Retracted] Sleep Status and Menstrual Problems among Chinese Young Females

Table 2

Linear regression analysis of menstrual blood volume and sleep status.

		SE		value
Bedtime	1.327	1.392	0.953	0.341
Bedtime regularity	-6.140	2.613	-2.349	0.019
Sleep duration	1.757	1.015	1.732	0.083
Sleep quality	2.105	1.860	1.132	0.258

 = regression coefficients; SE = standard error.