Table 2. Population characteristics of surgery responders based on reconstruction type.

	DIEP	Pedicled TRAM	LDMF	LDMF+IM	p
Response rate	73.80%	74.60%	70.10%	72.20%
(Responders/total surveyed)	(62/84)	(44/59)	(49/70)	(52/72)
Type of mastectomy
Modified radical mastectomy	17 (27.4%)	19 (43.2%)	30 (61.2%)	42 (80.8%)	< 0.001
Simple mastectomy + sentinel lymph node biopsy	40 (64.5%)	25 (56.8%)	17 (34.7%)	9 (17.3%)
Simple mastectomy	5 (8%)	0	2 (4%)	1 (1.9%)
Reconstruction stage
Immediate	57 (91.9%)	41 (93.2%)	49 (100%)	52 (100%)	0.045
Delayed	5 (8.1%)	3 (6.8%)	0	0
Education
College/university degree(s)	34 (54.8%)	20 (45.5%)	34 (69.4%)	32 (61.5%)	0.249
Less than college degree	20 (32.3%)	21 (47.7%)	15 (30.6%)	20 (38.5%)
Unknown	8 (12.9%)	3 (6.8%)	0	0
Tumor staging
Ductal carcinoma in situ	9 (14.5%)	2 (4.5%)	13 (26.5%)	5 (9.6%)	0.038
Stage I	23 (37.1%)	21 (47.7%)	10 (20.4%)	24 (46.2%)
Stage II	23 (37.1%)	17 (38.6%)	23 (46.9%)	19 (36.5%)
Stage III	3 (4.8%)	3 (6.8%)	2 (4.1%)	4 (7.7%)
Unknown	4 (6.4%)	1 (2.3%)	1 (2.0%)	0
Age at reconstruction
≤ 35 years	5 (8.1%)	6 (13.6%)	20 (40.8%)	26 (50.0%)	0.0001
> 35 years	56 (90.3%)	37 (84.1%)	29 (59.2%)	26 (50.0%)
Unknown	1 (1.6%)	1 (2.3%)	0	0
Body mass index
Average (18–24)	55 (88.7%)	37 (84.1%)	44 (89.8%)	42 (80.8%)	0.648
Overweight (24–28)	5 (8.1%)	7 (15.9%)	4 (8.2%)	8 (15.4%)
Obese (> 28)	2 (3.2%)	0	1 (2.0%)	1 (1.9%)
Unknown	0	0	0	1 (1.9%)
Time interval between the reconstruction and the survey
Two years or less than 2 years	61 (98.4%)	35 (79.5%)	36 (73.5%)	42 (80.8%)	0.002
More than 2 years	1 (1.6%)	8 (18.2%)	13 (26.5%)	10 (19.2%)
Unknown	0	1 (2.3%)	0	0
Birthplace
Shanghai	35 (56.5%)	24 (54.5%)	21 (42.9%)	19 (36.5%)	0.123
Outside state	27 (43.5%)	20 (45.5%)	28 (57.1%)	33 (63.5%)
Unknown	0	0	0	0