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Lung India Official publication of Indian Chest Society  
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ORIGINAL ARTICLE
Year : 2011  |  Volume : 28  |  Issue : 3  |  Page : 187-190

Effect of age on presentation with diabetes: Comparison of nondiabetic patients with new smear-positive pulmonary tuberculosis patients


1 Department of Pulmonary Medicine, Himalayan Institute of Medical Sciences, Dehradun, Uttarakhand, India
2 Department of Microbiology, Himalayan Institute of Medical Sciences, Dehradun, Uttarakhand, India

Correspondence Address:
Jagdish Rawat
Department of Pulmonary Medicine, Himalayan Institute of Medical Sciences, Dehradun, Uttarakhand - 248140
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0970-2113.83975

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Background: Diabetes mellitus (DM) has been reported to modify the presenting features of pulmonary tuberculosis (PTB), but data regarding the effect of diabetes on the presentation of PTB are highly variable. Objective: To determine whether DM alters the demographic, clinical, and radiological manifestations of tuberculosis and whether the effect of diabetes varies with the age group of PTB patients. Materials and Methods : This prospective observational study was conducted on new smear-positive PTB patients with DM (PTB-DM group) and non-diabetic PTB patients (PTB group). Patients of both groups were again divided into six age groups (15-29, 30-39, 40-49, 50-59, 60-69, and >70 rears) to analyze and compare the impact of age on clinicoradiological presentations of PTB. Results: Patients in the PTB-DM group were significantly older (53.34 ± 14.06 year) in comparison to their nondiabetic counterparts (PTB group) (44.35 ± 18.14 year) (P < 0.001). The former group also had a lower male:female ratio, although the difference was not statistically significant (1.16:1 vs. 2.05:1, P = 0.101). Tuberculin positivity was significantly higher in the PTB group, compared with patients in the PTB-DM group (P < 0.004). The proportion of patients with lower lung field involvement (P = 0.003) and cavitations (P = 0.005) was also higher in the former group compared with the latter. Conclusion: Diabetic patients with tuberculosis were relatively older, had lower tuberculin positivity, and higher proportion of lower lung field involvement and cavitation in comparison to nondiabetic patients.


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