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Table 4 Results obtained in logistic regression analysis for consent and questionnaire return

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

  OR 95% CI
Consent   
  Mode of Invitation   
    Clinic 1 (ref) -
    Letter or phone 0.39 0.25, 0.59
  Timing of invitation*   
    < 1 month since diagnosis 1 (ref) -
    3-6 months since diagnosis 0.56 0.28, 1.41
    4-6 months since diagnosis 0.51 0.23, 1.12
    7-18 months since diagnosis 0.50 0.24, 1.06
    >18 months since diagnosis 0.40 0.16, 0.99
Questionnaire Return   
  Mode of Invitation   -
    Clinic 1 (ref)  
    Letter 1.39 0.97, 1.99
  1. OR = Odds Ratio, CI = Confidence Interval.
  2. * Trend p-value with increasing time since diagnosis = 0.07.