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Table 1 Comparison of characteristics of breast cancer patients aged 50–69 years between organised and opportunistic mammography screening. Fribourg cancer registry 2006–2014

From: Comparison between opportunistic and organised breast cancer mammography screening in the Swiss canton of Fribourg

  Organised screening Number (%) Opportunistic screening Number (%) ORa CI95%a P-value
Age      1.0 [0.97; 1.02] 0.631
 Mean (SDa) 59.62 (6.058) 59.92 (5.800)    
Marital status
 Married 246 (61.5) 128 (63.7) 1 [0.64; 1.29] 0.603
 Other 154 (38.5) 73 (36.3) 0.9
Nationality
 Swiss 366 (92.4) 183 (91.5) 1 [0.61; 2.11] 0.693
 Other 30 (7.6) 17 (8.5) 1.1
Country of birth
 Switzerland 320 (81.8) 154 (80.2) 1 [0.72; 1.72] 0.635
 Other 71 (18.2) 38 (19.8) 1.1
Linguistic area
 German 79 (19.7) 40 (19.5) 1 [0.66; 1.54] 0.967
 French 323 (80.3) 165 (80.5) 1.0
Area of residence
 Urban 225 (56.0) 133 (64.9) 1 [0.49; 0.97] 0.035
 Rural 177 (44.0) 72 (35.1) 0.7
Financial power of area
 High 84 (20.9) 64 (31.2) 1   0.020
 Middle 190 (47.3) 86 (42.0) 0.6 [0.39; 0.90]
 Low 128 (31.8) 55 (26.8) 0.6 [0.36; 0.89]
  1. Calculated by logistic regression (reference: organised screening);
  2. a OR Odds ratio, CI Confidence interval, SD Standard deviation