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Table 1 Descriptive data for all patient cohorts used to establish validity and reliability of the survey tool.

From: A questionnaire for determining prevalence of diabetes related foot disease (Q-DFD): construction and validation

Sample

 

A

B

C1

C2

C3

D

Total participants

31

21

25

13

12

30

Mean Age (years)

64.0

(range 45-80)

67.1

(range 45-83)

64.7

(range 45-77)

68.0 (range57-77)

61.0 (range 45-76)

 

Mean diabetes

Duration (years)

10.2

(range 1-55)

13.7

(range 1-36)

19.9

(range 1-54)

25.7

(range 5-54)

13.5 (range 2-37)

 

Male

15 (48.0%)

10 (48.0%)

15 (60.0%)

10 (77.0%)

5 (42.0%)

17 (57.0%)

Female

16 (52.0%)

11 (52.0%)

10 (40.0%)

3 (23.0%)

7 (58.0%)

13 (43.0%)

  1. C1 - clinic based cohort, survey Vs medical record, C2 - clinic based cohort, survey Vs medical record, with known foot complications
  2. C3 - clinic based cohort, survey Vs medical record, with no known foot complications
  3. Sample A was used to determine face validity, Sample B was used to determine criterion validity and
  4. Sample C was used to determine construct validity. Sample D was used to establish test re-test and inter and intrarater reliability.
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