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. 2019 Dec 5;19:940. doi: 10.1186/s12913-019-4789-3

Table 1.

Women’s and tumoral characteristics according to readmission

Readmitted, n (%)
(n = 234)
Not readmitted, n (%) (n = 821) p-value1
Early readmission Late readmission Long-term readmission
Total 76 (7.2) 87 (8.2) 71 (6.7) 821 (77.8)
Age (years)
 50–54 24 (31.6) 22 (25.3) 32 (45.1)a 224 (27.3)a 0.013
 55–59 25 (32.9) 27 (31.0) 16 (22.5) 212 (25.8)
 60–64 21 (27.6) 19 (21.8) 17 (23.9) 225 (27.4)
 65–69 6 (7.9) 19 (21.8) 6 (8.5) 160 (19.5)
 Missing 0 0 0 0
Charlson index
 0 61 (80.3) 61 (70.1) 47 (66.2) 603 (73.4) 0.245
 1 15 (19.7) 26 (29.9) 24 (33.8) 218 (26.6)
 Missing 0 0 0 0
Detection mode
 Screen-detected 50 (65.8) 62 (71.3) 42 (59.2) 568 (69.2) 0.306
 Interval Cancer 26 (34.2) 25 (28.7) 29 (40.8) 253 (30.8)
 Missing 0 0 0 0
Tumor-node-metastasis stage
 In situ 6 (8.1) 8 (9.6) 5 (7.4) 84 (10.4) 0.069
 Stage I 36 (48.6)a 38 (45.8) 18 (26.5)a,b 368 (45.5)b
 Stage II 25 (33.8) 26 (31.3) 28 (41.2) 249 (30.8)
 Stage III/IV 7 (9.5) 11 (13.3) 17 (25.0)a 108 (13.3)a
 Missing 2 4 3 9
Focality
 Unifocal 43 (70.5)a 54 (75.0) 49 (81.7) 594 (85.3)a 0.005
 Multifocal and/or multicentric 18 (29.5)a 18 (25.0) 11 (18.3) 102 (14.7)a
 Missing 15 15 11 125
Tumor grade
 Well differentiated 13 (21.0) 18 (27.3)a 4 (7.0)a,b 193 (29.2)b 0.001
 Moderately differentiated 33 (53.2) 34 (51.5) 27 (47.4) 248 (37.6)
 Poorly differentiated/ undifferentiated 16 (25.8) 14 (21.2)a 26 (45.6)a 219 (33.2)
 Not applicable 7 4 1 49
 Missing 7 17 13 112
Tumor phenotype
 Luminal A 29 (58.0) 35 (64.8) 19 (41.3) 324 (51.8) 0.017
 Luminal B 13 (26.0) 9 (16.7) 10 (21.7) 181 (28.9)
 HER2 3 (6.0) 3 (5.6) 11 (23.9)a 51 (8.1)a
 Triple-negative 5 (10.0) 7 (13.0) 6 (13.0) 70 (11.2)
 Missing 26 37 25 195

1 Chi-square test

a,b Values in the same row and subtable sharing the same subscript were significantly different (p < .05) in the two-sided equality test for column proportions