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Fig. 2 | BMC Pulmonary Medicine

Fig. 2

From: Omega-3 fatty acid intake and prevalent respiratory symptoms among U.S. adults with COPD

Fig. 2

Relationship between EPA + DHA Intake and Respiratory Symptoms is Modified by Socioeconomic and Smoking Status Among U.S. Adults with COPD. 3-way interaction analyses between education, smoking status, and EPA + DHA. Symptoms with a significant interaction are shown (nocturnal wheeze excluded, pintx = 0.767). Logistic regression models adjusted for age, gender, race, FEV1, caloric intake, BMI, pack-years, and omega-6 (LA) intake. (<high school, former smoker: n = 133; <high school, current smoker: n = 149; >high school, former smoker, n = 323; >high school, current smoker, n = 273) *denotes statistical significance within stratified analyses for p < 0.05

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