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Volume 19, Number 5—May 2013

Transmission of Mycobacterium tuberculosis Beijing Strains, Alberta, Canada, 1991–2007

Deanne Langlois-Klassen, Ambikaipakan Senthilselvan, Linda Chui, Dennis Kunimoto, L. Duncan Saunders, Dick Menzies, and Richard LongComments to Author 
Author affiliations: University of Alberta, Edmonton, Alberta, Canada (D. Langlois-Klassen, A. Senthilselvan, L. Chui, D. Kunimoto, L.D. Saunders, R. Long); Provincial Laboratory for Public Health, Edmonton (L. Chui); McGill University Health Centre, Montreal, Quebec, Canada (D. Menzies); McGill University, Montreal (D. Menzies)

Main Article

Table 5

Sensitivity analyses of the relative transmission index of Mycobacterium tuberculosis lineage, Alberta, Canada, 1991–2007

Variable Transmission Index
Relative transmission index (95% CI)*
Beijing Non-Beijing Unadjusted Adjusted†
Cutoff period, y
2 0.06 0.14 0.45 (0.25–0.83) 0.82 (0.41–1.67)
3 0.09 0.18 0.50 (0.29–0.89) 1.04 (0.53–2.06)

0.33 (0.17–0.63)
0.86 (0.41–1.79)

0.38 (0.26–0.54)
0.58 (0.39–0.87)
Inclusion of nonpulmonary secondary cases‡ 0.07 0.17 0.42 (0.23–0.74) 0.70 (0.36–1.36)

*Boldface indicates significance (p<0.05).
†Adjusted for sex, age at diagnosis, population group, sputum smear status, lung cavitation and M. tuberculosis lineage.
‡Using a 2-year cutoff period.

Main Article

Page created: April 25, 2013
Page updated: April 25, 2013
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