Volume 23, Number 7—July 2017
CME ACTIVITY - Research
Risk Factors for Legionella longbeachae Legionnaires’ Disease, New Zealand
Emma Kenagy1, Patricia C. Priest1
, Claire M. Cameron, Debbie Smith, Pippa Scott, Vicki Cho, Peter Mitchell, and David R. Murdoch
, Claire M. Cameron, Debbie Smith, Pippa Scott, Vicki Cho, Peter Mitchell, and David R. Murdoch
Table 2
Univariate analyses of the associations between health conditions or smoking and Legionella longbeachae Legionnaires’ disease, New Zealand, October 1–March 31, 2013–2014 and 2014–2015*
| Health conditions | Case-patients, no. (%) | Controls, no. (%) | OR (95% CI) |
|---|---|---|---|
| Preexisting health conditions | |||
| Cardiac disease | 8 (26) | 35 (20) | 1.2 (0.47–3.0) |
| Respiratory disease | 10 (32) | 35 (20) | 2.1 (0.87–4.9) |
| Asthma | 8 (26) | 28 (16) | 1.9 (0.76–4.9) |
| COPD | 5 (16) | 9 (5) | 4.2 (1.2–14.7) |
| Diabetes | 5 (16) | 12 (7) | 2.8 (0.88–9.0) |
| Immunosuppression |
6 (19) |
16 (9) |
2.7 (0.91–7.9) |
| Smoking | |||
| Current smoker | 4 (13) | 9 (5) | 2.4 (0.66–8.5) |
| Ever smoked |
19 (61) |
63 (37) |
2.6 (1.2–5.7) |
| Smoking period† | |||
| Never smoked | 12 (39) | 109 (65) | 1.0 |
| Smoked <20 y | 5 (16) | 26 (16) | 1.6 (0.5–5.1) |
| Smoked 20 y to <40 y | 4 (13) | 17 (10) | 2.3 (0.6–8.0) |
| Smoked >40 y | 10 (32) | 15 (9) | 5.6 (2.0–16.0) |
*COPD, chronic obstructive pulmonary disease; OR, odds ratio.
†Length of time smoking could not be determined for 5 control respondents. Percentages are given for those in which length of time smoking was known.
1These authors contributed equally to this article.
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