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Table 2 Participants’ characteristics

From: Breast cancer patient delay in Fukushima, Japan following the 2011 triple disaster: a long-term retrospective study

Characteristic Pre-disaster (N = 122) Post-disaster (N = 97) P-value
Age (N, %)    0.74
 –50] 25 (20.5) 16 (16.5)  
 (50–65] 41 (33.6) 33 (34.0)  
 (65– 56 (45.9) 48 (49.5)  
Engaged in a full-time job (N, %) 24 (19.7) 22 (22.7) 0.59
Number of cohabitant family membersa (median, range) 2 (0–7) 1 (0–6) <0.05
Living with a partner (N, %)    0.23
 Yes 66 (54.1) 63 (65.0)  
 No 50 (41.0) 34 (35.1)  
 Missing 6 (4.9) 0 (0.0)  
Living with children (N, %)    <0.05
 Yes 72 (59.0) 46 (47.4)  
 No 44 (36.1) 51 (52.6)  
 Missing 6 (4.9) 0 (0.0)  
Presence of lump (N, %) 106 (86.9) 91 (93.8) 0.09
Hormone receptor (N, %)    <0.001
 Positive 80 (65.6) 89 (91.8)  
 Negative 37 (30.3) 8 (8.3)  
 Missing 5 (4.1) 0 (0.0)  
Stage (N, %)    0.22
 0 11 (9.0) 5 (5.2)  
 I 33 (27.1) 29 (29.9)  
 II 48 (39.3) 42 (43.3)  
 III 27 (22.1) 14 (14.4)  
 IV 3 (2.5) 7 (7.2)  
ASA Physical classification system (N, %)    0.52
 Normal healthy patient 59 (48.4) 40 (41.2)  
 Patient with mild systemic disease 50 (41.0) 47 (48.5)  
 Patient with severe systemic disease 13 (10.7) 10 (10.3)  
Body mass index (kg/m2, N, %)    0.33
 –25] 75 (61.5) 62 (63.9)  
 (25–30] 29 (23.8) 28 (28.9)  
 (30– 14 (11.5) 6 (6.2)  
 Missing 4 (3.3) 1 (1.0)  
History of benign breast disease (N, %) 7 (5.7) 6 (6.2) 0.89
History of breast cancer (N, %) 2 (1.6) 2 (2.1) 1.00
Undertook mammography screening within past two years (N, %) 15 (12.3) 12 (12.4) 0.99
Family history of any cancer (N, %)    0.46
 Yes 50 (41.0) 46 (47.4)  
 No 68 (55.7) 51 (52.6)  
 Missing 4 (3.3) 0 (0.0)  
Hospital (N, %)    <0.001
 Minamisoma Municipal General Hospital 14 (11.5) 97 (100)  
 Watanabe Hospital 108 (88.5) 0 (0.0)  
Distance from hospital (median (km), range) 3.6 (0.2–47.0) 3.3 (0.2–22.8) 0.68
Referral from other medical providers (N, %) 55 (45.1) 33 (34.0) 0.10
Days from first medical consultation to first examinationb (median, range) 0 (0–1096) 0 (0–676) 0.71
Residential areac (N, %)    <0.01
 Non-evacuation zone of So-so District 13 (10.7) 15 (15.5)  
 Voluntary evacuation zone 71 (58.2) 70 (72.2)  
 Mandatory evacuation zone 38 (31.2) 12 (12.4)  
Exempt from medical feesd (N, %) N/A 82 (84.5)  
Air dose ratede (average (μSv/h), age) N/A 0.31 (0.17)  
  1. aData is missing in five pre-disaster patients
  2. bData is missing in one post-disaster patient
  3. cFor pre-disaster patients, this indicates place of residence at the time of first medical consultation, and for post-disaster patients, indicates place of residence at the time of Japan’s triple disaster
  4. dData is available only among post-disaster patients
  5. eThis indicates approximate air dose rate at home at the time of first medical consultation