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Table 3 Concordance rates (kappa statistics) of laboratories with reference center (LAB 1), according to the expression of GGT and ALT activities

From: A prospective assessment of the inter-laboratory variability of biochemical markers of fibrosis (FibroTest) and activity (ActiTest) in patients with chronic liver disease

 

Fibrosis stage predicted by FibroTest using IU

Fibrosis stage predicted by FibroTest using UNL

 

Kappa vs reference center ± se

Discordance of more than 1 stage

Kappa vs reference center ± se

Discordance of more than 1 stage

LAB 2

0.72 ± 0.11

0

0.35 ± 0.11

1

LAB 3

0.78 ± 0.11

0

0.83 ± 0.11

0

LAB 4

0.56 ± 0.11

0

0.36 ± 0.10

0

LAB 5

0.32 ± 0.09

1

0.20 ± 0.10

8

LAB 6

0.94 ± 0.11

0

0.89 ± 0.11

0

LAB 7

0.52 ± 0.10

0

0.48 ± 0.10

1

LAB 10

0.52 ± 0.11

1

0.57 ± 0.10

3

LAB 11

0.44 ± 0.11

1

0.73 ± 0.11

1

 

Activity grade predicted by ActiTest using IU

Activity grade predicted by ActiTest using UNL

 

Kappa vs reference center ± se

Discordance of more than 1 stage

Kappa vs reference center ± se

Discordance of more than 1 stage

LAB 2

0.72 ± 0.12

0

0.32 ± 0.12

2

LAB 3

0.54 ± 0.12

0

0.44 ± 0.12

1

LAB 4

0.88 ± 0.13

0

0.43 ± 0.13

1

LAB 5

0.94 ± 0.13

0

0.56 ± 0.13

0

LAB 6

0.82 ± 0.12

0

0.43 ± 0.13

1

LAB 7

0.82 ± 0.13

0

0.45 ± 0.12

0

LAB 10

0.76 ± 0.13

0

0.38 ± 0.12

0

LAB 11

0.94 ± 0.12

0

0.37 ± 0.12

2

  1. se – standard error