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. Author manuscript; available in PMC: 2013 Oct 25.
Published in final edited form as: J Clin Oncol. 2008 Jun 1;26(16):10.1200/JCO.2007.14.8114. doi: 10.1200/JCO.2007.14.8114

Table 5.

Independent Samples t Test Examining Factors Associated With Decision to Enroll

Decided to Enroll
Undecided or Decided
Not to Enroll
Patient-Reported Outcome Mean SD Mean SD t df P
Decision-related affect/cognition
  Confidence in decision 3.52 0.71 3.04 0.46 1.55 27 .13
  Confidence in oncologist 3.62 0.51 3.10 0.46 2.43 31 .02*
  Oncologist-patient-family/companion relationship quality 3.48 0.50 3.67 0.58 .61 22 .55
  Oncologist-patient-family/companion decision agreement 3.65 0.53 3.11 0.19 3.14 9.02 .01*

Reasons for decision
  Personal 2.67 0.44 2.00 0.00 2.56 22 .02*
  Physician communication 2.54 0.64 1.67 0.29 2.30 25 .03*
  Family opinions 2.28 0.55 1.83 1.04 1.15 19 .26
  Cost manageability 2.09 0.85 1.75 0.96 .72 25 .48
  Adverse effects manageability 2.08 0.86 2.00 0.82 .17 27 .86

Abbreviation: SD, standard deviation.

*

P< .05.

Levene’s test for equality of variances was significant, so corrected t value and df are reported.