Table 2. Associations of anemia with sputum bacterial load and pulmonary pathology.

Lung injury	OR (95% CI)	P value	OR1 (95% CI)	P value	OR2 (95% CI)	P value
Effusion	1.583 (0.677–3.702)	0.289	1.657 (0.703–3.907)	0.248	1.585 (0.67–3.747)	0.294
Cavity	2.078 (1.003–4.305)	0.049	2.7 (1.211–6.021)	0.015	2.145 (1.011–4.552)	0.047
Infection zone (1, 2, 3, 4, 5, and 6)	1.919 (1.056–3.494)	0.033	2.018 (1.105–3.688)	0.022	2.065 (1.127–3.778)	0.019
Sputum bacterial load (1+, 2+, 3+, and 4+)	2.217 (1.054–4.655)	0.036	2.277 (1.08–4.802)	0.031	2.273 (1.074–4.811)	0.032

The OR value was obtained by logistic regression analysis. OR1, after gender adjustment; OR2, after age adjustment. P<0.05 is considered statistically significant.