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Volume 17, Number 9—September 2011
Letter

Pulmonary Disease Associated with Nontuberculous Mycobacteria, Oregon, USA

Kevin L. WinthropComments to Author , Cara D. Varley, Jill Ory, P. Maureen Cassidy, and Katrina Hedberg
Author affiliations: Author affiliations: Oregon Health and Sciences University, Portland, Oregon, USA (K.L. Winthrop, C.D. Varley); Oregon Public Health Division, Portland (K.L. Winthrop, P.M. Cassidy, K. Hedberg); Ory Consulting, Portland (J. Ory)

Main Article

Table

Prevalence of pulmonary nontuberculous mycobacterial disease, by geographic region and population density, Oregon, USA, 2005 and 2006*

Region/population density
Prevalence† (95% confidence interval)
Total no. cases All age groups Age <50 y Age >50 y
Total
411
5.6 (5.0–6.1)
1.1 (0.8–1.4)
15.2 (13.6–16.9)
County-level analysis
Western 385 6.0 (5.4–6.6) 1.2 (0.9–1.6) 16.5 (14.8–18.4)
Metropolitan 341 6.3 (5.7–7.0) 1.3 (1.0–1.8)‡ 18.0 (16.0–20.2)§¶#
Micropolitan 39 4.5 (3.2–6.1) 0.2 (0.0–1.0)‡ 11.1 (7.8–15.2)§¶
Rural 5 3.6 (1.2–8.3) 1.3 (0.0–7.1) 6.5 (1.8–15.9)§#
Eastern 26 2.7 (1.8–4.0) 0.2 (0.0–0.9) 7.6 (4.9–11.2)
Metropolitan 9 3.0 (1.4–5.6) 0.0 (0.0–1.8) 8.6 (3.9–16.3)
Micropolitan 12 2.5 (1.3–4.3) 0.3 (0.0–1.7) 6.8 (3.4–12.2)
Rural
5
2.9 (1.0–6.8)
0.0 (0.0–3.5)
7.8 (2.5–18.2)
ZIP code**
Western 365 5.7 (5.2–6.4)
Urban 277 6.4 (5.7–7.2)††
Rural 88 4.3 (3.5–5.3)††
Eastern 26 2.8 (1.8–4.0)
Urban 5 2.7 (0.9–5.7)
Rural 21 2.8 (1.7–4.1)

*Annualized 2-year disease period prevalence, Oregon, 2005 and 2006.
†Cases per 100,000 population.
‡Significant differences (p<0.05) between western Oregon metropolitan and micropolitan counties, age <50 y.
§West, age >50 y, metropolitan, micropolitan, and rural (Cochran-Armitage test for trend, p<0.01).
¶Significant differences (p<0.05) between western Oregon metropolitan and micropolitan counties, age >50 y.
#Significant differences (p<0.05) between western Oregon metropolitan and rural counties, age >50 y.
**Included only the 391 patients for whom with ZIP code data were available. –, age-level data not available for ZIP codes.
††Significant differences (p<0.05) between western Oregon urban and rural ZIP codes.

Main Article

Page created: September 06, 2011
Page updated: September 06, 2011
Page reviewed: September 06, 2011
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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