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Table 1 Distribution of clinical characteristics and treatment received overall, and among women diagnosed with screen-detected, interval and symptomatic breast cancers (n = 1,760)

From: Factors associated with wait times across the breast cancer treatment pathway in Ontario

  Overall Screen-detected Interval Symptomatic
  N = 1,760 N = 1096 N = 309 N = 355
Characteristics N (%) N (%) N (%) N (%)
Age Category     
50-59 680 (38.6) 415 (37.9) 124 (40.1) 141 (39.7)
60-69 1080 (61.4) 681(62.1) 185 (59.9) 214 (60.3)
Diagnosis Year *     
1995-1999 974 (55.3) 602 (54.9) 147 (47.6) 225 (63.4)
2000-2003 786 (44.7) 494 (45.1) 162 (52.4) 130 (36.6)
Chemotherapy     
No chemotherapy 1098 (62.4) 728 (66.4) 177 (57.3) 193 (62.8)
Chemotherapy 662 (37.6) 368(33.6) 132 (42.7) 162 (37.2)
Radiotherapy a     
No Radiotherapy 370 (21.2) 218 (19.9) 58 (18.8) 94 (26.5)
Radiotherapy 1377 (78.8) 873 (79.7) 246 (79.6) 258 (72.7)
Definite Surgery b δ     
Incisional/excisional 112 (6.6) 79 (7.5) 14 (4.7) 19 (5.8)
Partial Mastectomy 1071 (63.4) 688 (64.8) 185 (62.0) 198 (60.0)
Total Mastectomy 101 (6.0) 55 (5.2) 24 (8.1) 22 (6.7)
Modified/Radical Mast. 328 (19.4) 185 (17.4) 59 (19.8) 84 (25.5)
ALND/SLNB 77 (4.6) 54 (5.1) 16 (5.4) 7 (2.1)
TNM Stage **     
1 925 (52.6) 662 (60.4) 161 (52.1) 102 (28.7)
2 603 (34.3) 332 (30.3) 97 (31.4) 174 (49.0)
3 232 (13.2) 102 (9.3) 51 (16.5) 79 (22.3)
  1. aUnknown radiotherapy n = 13.
  2. bunknown surgery type n = 27; invalid surgery type n = 44.
  3. *difference for interval (p = 0.02) and symptomatic (p = 0.01) compared to screen-detected.
  4. difference for interval (p = 0.003) and symptomatic (p < 0.001) compared to screen-detected.
  5. difference for symptomatic compared to screen-detected (p = 0.01).
  6. δdifference for symptomatic compared to screen-detected (p = 0.003).
  7. **difference for interval (p < 0.001) and symptomatic (p < 0.001) compared to screen-detected.