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Table 5 Reliability: Internal consistency and stability of the five sections of the PCQ-P

From: The Prostate Care Questionnaire for Patients (PCQ-P): Reliability, validity and acceptability

 

Internal consistency

Stability: Test-retest reliability

Section i

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

69.1

68.5

0.68

  

19.6, 11.5-100 (60)

18.7, 16.7-100 (62)

 

Section B

0.63

84.4

81.3

0.57

  

15.3, 28.5-100 (73)

10.6, 39.7-99.4 (72)

 

Section C

0.77

88.4

87.6

0.61

  

12.0, 55.0-100 (62)

13.1,31.3-100 (63)

 

Section D

0.80

73.2

74.8

0.73

  

17.1, 27.7-99.23

14.5, 41.4-100 (49)

 
  

(48)

  

Section E

0.68

74.3

74.9

0.70

  

21.9, 16.7-100 (61)

19.7, 18.8-100 (60)

 
  1. iSection A = GP visits and referral, Section B = tests at the hospital, Section C = diagnosis and treatment decision, Section D = treatment and discharge, Section E = monitoring