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Fig. 2 | BMC Pulmonary Medicine

Fig. 2

From: Lysophosphatidic acid species are associated with exacerbation in chronic obstructive pulmonary disease

Fig. 2

Rate of exacerbation over 24 weeks by baseline LPA profile. Adjusted exacerbation rates are estimates from a Quasi-Poisson regression model adjusted for the following covariates in addition to log(patient-years) as an offset: number of exacerbations within the last 12 months, smoking status, geographical region, baseline COPD medications, and sex. L = lowest-; M = medium-; H = highest-tertile of the respective LPA levels. P-values compared H to L or M subgroup. *p < 0.05; **p < 0.01. N, number of patients

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