Table 1.

Baseline characteristics of study analysis population

Variable		Control Arm		Intervention Arm		All		p b
			(%)		(%)		(% or range)	value
Age (years old)	n	145		136		281		ns
	mean ± std.a	47.3 ± 8.80		45.1 ± 8.49		46.2 ± 8.70
	median	48		46		47	(25–67)
Height (cm)	n	145		136		281		ns
	mean ± std	158.4 ± 4.87		158.1 ± 4.32		158.2 ± 4.61
	median	158		158.5		158.5	(139–172)
Weight (kg)	n	145		136		281		ns
	mean ± std	67.4 ± 9.77		66.8 ± 8.81		67.1 ± 9.30
	median	66.0		66.5		66.0	(45–103)
BMI (kg/m^2)	n	145		136		281		ns
	mean ± std	26.9 ± 3.58		26.7 ± 3.37		26.8 ± 3.48
	median	26.2		26.6		26.4	(18.2–39.0)
Education	no school	0	(0.0)	2	(1.5)	2	(0.7)	ns
	elementary	13	(9.0)	18	(13.2)	31	(11.0)
	middle school	70	(48.3)	74	(54.4)	144	(51.3)
	high school	32	(22.1)	25	(18.4)	57	(20.3)
	college & up	30	(20.7)	17	(12.5)	47	(16.7)
Income level	poor	33	(22.8)	39	(28.7)	72	(25.6)	ns
	low	62	(42.8)	60	(44.1)	122	(43.4)
	middle	50	(34.5)	37	(27.2)	87	(31.0)
Tumor side	left	71	(49.0)	74	(54.4)	145	(51.6)
	right	74	(51.0)	62	(45.6)	136	(48.4)
Surgery	MRMa	143	(98.6)	131	(96.3)	274	(97.5)
	BCSa	2	(1.4)	5	(3.7)	7	(2.5)
TNM Stage	undetermined	10	(6.9)	9	(6.6)	19	(6.8)	ns
	I	15	(10.3)	15	(11.0)	30	(10.7)
	II	78	(53.8)	67	(49.3)	145	(51.6)
	III	40	(27.6)	44	(32.4)	84	(29.9)
	IV	2	(1.4)	1	(0.7)	3	(1.1)

^astd standard deviation, BMI body mass index, MRM modified radical mastectomy, BCS breast conserving surgery

^bp value was from the Student’s t test or simple Chi-square or exact test. ns not significant at p > 0.20