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Volume 8, Number 11—November 2002
THEME ISSUE
Tuberculosis Genotyping

Tuberculosis Genotyping Network, United States

Quality Assessment of Mycobacterium tuberculosis Genotyping in a Large Laboratory Network

Christopher R. Braden*Comments to Author , Jack T. Crawford*, and Barbara A. Schable*
Author affiliations: *Centers for Disease Control and Prevention, Atlanta, Georgia, USA;

Main Article

Table 2

Number and percent of restriction fragment length polymorphism images from each laboratory matching reference pattern in quality assessment panels

Laboratory No. of patterns submitted by laboratory Matcha (%) Match ±1b (%) Match ±2c (%)
1 36 27 (75) 33 (92) 36 (100)
2 39 29 (74) 35 (90) 38 (97)
3 35 27 (77) 35 (100) 35 (100)
4 38 33 (87) 37 (97) 38 (100)
5 38 33 (87) 35 (92) 36 (95)
6 34 22 (65) 28 (82) 33 (97)
7 27 13 (48) 25 (93) 26 (96)
8 33 20 (61) 25 (76) 30 (91)

a Number of patterns submitted by laboratory that matched exactly the reference pattern.
b Match ±1, exact match with the exception of one band.
cMatch ±2, exact match with the exception of two bands.

Main Article

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