CRP and chronic obstructive pulmonary disease: This contrasts with the study by Marie-Kathrin Breyer et al., who found that obese COPD patients (BMI ≥ 30 kg/m2) were 3.3 times more likely (95% CI, 1.5-7.0, p = 0.002) to have highly elevated CRP levels compared to normal weight (BMI 21-24.9 kg/m2) COPD patients, after taking clinically relevant confounders into account [23].