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Table 3 Error variance affected by Harvester (left) and error variance affected by ELISA operator (right) in the first trial.

From: Quality assessment of an interferon-gamma release assay for tuberculosis infection in a resource-limited setting

εi.

Harvester

P value

ε.j

ELISA operator

P value

Nil

A:1.9150

B:0.0160

0.0040

Nil

A:0.0036

B:3.2723

0.0244

TB-Antigen

A:2.9897

B:9.7114

0.2546

TB-Antigen

A: 0.1270

B:15.2216

0.0830

Mitogen

A:33.5782

B: 5.6792

0.2780

Mitogen

A:41.1154

B: 3.0221

0.3584