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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.