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Table 2 Number of families invited by each of the three invitation modes and number of families consenting based on invitation mode

From: Participation in paediatric cancer studies: timing and approach to recruitment

  Aus-ALL Aus-CBT ISET
Clinic invitations (% of all invitations) 484 (100%) 363 (65%) 62 (89%)
Letter invitations (% of all invitations)   170 (30%) 8 (11%)
Phone invitations (% of all invitations)   27 (5%)  
Consent (% of all invited) 416 (86%) 374 (67%) 52 (74%)
Consent (% of invited in clinic) 416 (86%) 277 (76%) 49 (79%)
Consent (% of invited by letter)   81 (48%) 3 (38%)
Consent (% of invited by phone)   16 (62%)  
  1. ALL –Australian Study of Acute Lymphoblastic Leukemia,
  2. CBT – Australian Study of Childhood Brain Tumours,
  3. ISET – International Study of Embryonal Tumours.