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Table 4 Reliability: Internal consistency and stability of the three sections of the PCQ-C

From: The Prostate Care Questionnaire for Carers (PCQ-C): reliability, validity and acceptability

  Internal consistency Stability: Test-retest reliability
Sectioni Cronbach's α 1st mailing mean score
SD, min-max
(N)
2nd mailing mean score
SD, min-max
(N)
Intraclass Correlation Coefficient (ICC)
Section A 0.80 65.4
26.7, 14.8-100 (29)
63.9
23.2, 12.7-96.5 (28)
0.77
Section B 0.82 90.2
16.1, 16.7-100 (29)
94.0
7.5, 72.2-100 (27)
0.52
Section C 0.89 80.7
20.9, 9.1-100 (40)
77.9
23.9, 8.3-100 (43)
0.83
  1. iSection A = carer experiences when the patient was undergoing testing for prostate cancer, Section B = carer experiences during getting the diagnosis and making the treatment decision, Section C = carer experiences during treatment, discharge and monitoring