Skip to main content

Table 2 Median and 90th percentile in days of the diagnostic interval by detection mode

From: Factors related to breast cancer detection mode and time to diagnosis in Alberta, Canada: a population-based retrospective cohort study

Factor Screen-detected (n = 4747) Symptom-detected (n = 7280)
Median 90 % P-value Median 90 % P-value
Overall 19 70   21 92  
Demographic factors   
Age   
 39- NA NA 0.10 21 80 <0.001
 40–49 21 91 21 98
 50–69 19 69 21 100
 70–74 19 66 23 106
 75+ 18 60 20 70
Neighborhood Income Quintile   
  > 80 % 17 77 0.046 21 102 0.49
 60 % ~ 80 % 20 70 21 93
 40–60 % 19 66 21 98
 20 % ~ 40 % 19 70 22 88
  < 20 % 22 68 21 83
 Missing 37 130 26.5 75
CLINICAL FACTORS   
Stage   
 In Situ 30 87 <0.001 49 156 <0.001
 I 15 57.5 25 106
 II 16 71 19 66
 III 15 123.5 17 71
 IV 16 83 13 65
 Missing 38 133.5 19.5 97
Histological Grade   
 Well differentiated 17 62 0.008 28 112 <0.001
 Moderately differentiated 18 68 21 93
 Poorly or undifferentiated 20 73 19 74
 Unknown/ Not stated/ Not applicable 34 100 35 135.5
Charlson Comorbidity Index   
 0 19 70 0.067 21 98 0.004
 1 21 75 20 81
  ≥ 2 19 63 20 86
Healthcare factors   
Regional Health Authority   
 1 29.5 83.5 <0.001 26 106 <0.001
 2 41.5 110 33 128
 3 25 73 25 98
 4 29 70 22 84
 5 19 62 19 100
 6 7 54 17 87
 7 19 69 16 69
 8 29.5 181 13 86
 9 29.5 57.5 14 58
Time Period   
 2004–2006 18 67 0.024 21 87 0.72
 2007–2010 20 73 21 97
Usual Provider Continuity   
 High continuity (>0.75) 19 67 0.48 22 91 <0.001
 Low continuity (<=0.75) 20 74 22 99
 Minimum doctor visits 18 70 18 63
Community Size and Metropolitan Influence Zone  
 Urban 17 69 <0.001 21 93 0.01
 Rural 26 72 20 88