Background and Objective: Patients with poorly
controlled diabetes are at risk of various infections
including tuberculosis (TB). This study aimed at
studying factors associated with pulmonary
tuberculosis infection in diabetic patients
Method: An unmatched case-control study was
conducted among type 2 diabetes mellitus (T2DM)
patients in Ban Fang hospital, Khon Kaen from
October 1st, 2012 to April 30th, 2019. The study group
included all T2DM patients who were diagnosed with
pulmonary TB, whereas the control group were T2DM
patients without pulmonary TB diagnosis. Subjects in
control group were randomly selected into a ratio 1:2
of case per control. Data collections were performed
by reviewing medical records of the hospital database.
Data were analyzed using descriptive and analytic
approaches such as frequency, percentage, Pearson
Chi-square test, Independent-Samples T-test, Odds
ratio and multiple logistic regression.
Results: A total of 210 subjects were selected
comprising 68 cases of study group and 142 cases of
control group. The factors which were significantly
related to pulmonary TB among diabetic patients
included: FBS ≥180 mg/dl (Adjusted OR = 5.63, 95%
CI: 2.61-12.16); BMI<23 kg/m2 (Adjusted OR = 4.86,
95% CI: 2.18-10.84); receiving insulin injection
(Adjusted OR = 0.31, 95% CI: 0.13-0.74) and male (Adjusted OR = 2.28, 95% CI: 1.06-4.88).
Conclusion: T2DM patients with high FBS, normal or
low BMI and male gender were at high risk of pulmonary
TB infection, while patients with history of taking
insulin injection were at lower risk.
Keywords
Diabetes Mellitus type 2 pulmonary tuberculosis fasting blood sugar