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Table 4 Internal Consistency and Test-retest Reliability of the PedsQL™ 3.0 Cancer Module

From: Psychometric study of the European Portuguese version of the PedsQL 3.0 Cancer Module

  Internal consistencya Test-retest reliability (one-weak)b
Whole sample Children Adolesc Whole sample Children Adolesc
  (N = 332) (n = 143) (n = 189) (N = 52) (n = 22) (n = 30)
Total score .87 .83 .89 .79** .70** .83**
 Pain and Hurt .75 .58 .85 .61** .54** .63**
 Nausea .86 .79 .90 .78** .78** .78**
 Procedural Anxiety .82 .78 .87 .81** .76** .86**
 Treatment Anxiety .80 .68 .87 .72** .89** .63**
 Worry .77 .69 .81 .76** .68** .79**
 Cognitive Problems .70 .61 .77 .77** .48** .87**
 Perceived Physical Appearance .65 .49 .75 .81** .85** .78**
 Communication .70 .69 .70 .74** .74** .75**
  1. Note. Adolesc = adolescents
  2. **p ≤ .01
  3. aCronbach’s alpha; bIntraclass correlation coefficients