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Table 3 Results of duplicate (Groups 1–4) and single (Group 5) ABI measurements

From: A new efficient trial design for assessing reliability of ankle-brachial index measures by three different observer groups

 

Gr1

Gr2

Gr3

Gr4

Gr5

Total

p-value

Gr1-Gr3

ABI

        

- N

36

36

36

36

45

189

 

108

- Mean

1.10

1.08

1.11

1.06

1.04

1.08

0.055

1.10

- SD

0.09

0.11

0.10

0.13

0.17

0.13

 

0.10

- Min

0.94

0.74

0.92

0.6

0.52

0.52

 

0.74

- Max

1.35

1.32

1.37

1.24

1.27

1.37

 

1.37

- Missing

0

0

0

0

0

0

 

0

ABI

        

< 0.90

0 (0%)

2 (5.6%)

0 (0%)

5 (13.9%)

8 (17.8%)

15 (7.9%)

0.003

2 (1.9%)

>= 0.90

36 (100%)

34 (94.4%)

36 (100%)

31 (86.1%)

37 (82.2%)

174 (92.1%)

 

106 (98.2%)

Missing

0

0

0

0

0

0

 

0

  1. p-values: Fisher's exact test, analysis of variance