Evidence of mycobacterial disease in COPD patients with lung volume reduction surgery; the importance of histological assessment of specimens: a cohort study

Table 4 Multivariate comparison of selected variables between patients with and without evidence of mycobacterium infection

	Odds ratio (95% confidence interval)	P-Value
Sex
Male	0.79 (0.12, 4.98)	0.798
Female	0.79 (0.12, 4.98)	0.798
Age
<60	0.76 (0.15, 3.78)	0.740
≥60 years	0.76 (0.15, 3.78)	0.740
BMI
<18.5 kgm⁻²	0.13 (0.01, 1.50)	0.102
≥18.5 kgm⁻²	0.13 (0.01, 1.50)	0.102
Exacerbation rate
<2 per year	50.24 (4.19, 602.01)	0.002
≥2 per year	50.24 (4.19, 602.01)	0.002
Pre-operation FEV1 (% predicted)
<40%	1.08 (0.8, 15.45)	0.954
≥40%	1.08 (0.8, 15.45)	0.954
Pre-operation FVC (% predicted)
<80%	0.24 (0.04, 1.37)	0.108
≥80%	0.24 (0.04, 1.37)	0.108
Pre-operation TICO (% predicted)
<40%	0.17 (0.03, 1.09)	0.061
≥40%	0.17 (0.03, 1.09)	0.061
Pre-operation TLC (% predicted)
<125%	5.86 (0.53, 64.6)	0.149
≥125%	5.86 (0.53, 64.6)	0.149
Pre-operation RV (% predicted)
<200%	0.29 (0.03, 2.52)	0.261
≥200%	0.29 (0.03, 2.52)	0.261

Results of binary logistic regression. The odds ratio is the odds of mycobacterium (present) if risk factor category present relative to other risk factors. All odds ratios are adjusted for all other risk factors in the model.

ISSN: 1471-2466