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Table 1 Characteristics of the study population at baseline

From: The effectiveness of a graphical presentation in addition to a frequency format in the context of familial breast cancer risk communication: a multicenter controlled trial

  Frequency format Frequency format + Graphical display Differences
  N = 62 N = 87 P-value
Age, mean (sd) year, range 40 (11), 20-63 41 (12), 18-70 .464c
Educationa, n (%)    .804d
 Low 10 (16) 15 (18)  
 Intermediate 26 (42) 30 (37)  
 High 26 (42) 37 (45)  
Married or cohabiting, n (%) 46 (74) 68 (79) .487d
Number of children, mean (sd) 1.5 (1.5) 1.7 (1.3) .432c
Ethnicity, n (%)    .428d
 Both parents Dutch 55 (92) 77 (90)  
 Parent(s) not Dutch (Western) 3 (5) 8 (9)  
 Parent(s) not Western 2 (3) 1 (1)  
(Very) actively religious, n (%) 16 (25) 22 (26) .772d
Family history of breast cancer    
 # 1st degree relatives affected, mean (sd) 1.4 (0.7) 1.3 (0.6) .706c
 # 2nd degree relatives affected, mean (sd) 2.1 (1.1) 1.9 (1.0) .261c
Women’s breast cancer risk estimationb, n (%)    .268d
 Not/slightly increased (10-20%) 25 (40) 35 (40)  
 Moderately increased (20-30%) 21 (34) 28 (32)  
 Highly increased (30-40%) 16 (26) 25 (28)  
  1. aLow: primary school, lower level of secondary school, lower vocational training. Intermediate: higher level of secondary school, intermediate vocational training. High: higher vocational training, university.
  2. bAs estimated by the genetic counselor during standard genetic counseling before risk consultation. Not/slightly increased risk group included two women with population breast cancer risk in each group.
  3. ct-test.
  4. dChi2-test.
  5. Sd = standard deviation.