Pulmonary Function and Symptoms in Herbal Tea Workers Robert M. Castellan, M.D., Brian A. Boehlecke, M.D., Martin R. Petersen, M.S., Terry D. Thedell, Ph.D., James A. Merchant, M.D., Dr. P.H. CHEST Volume 79, Issue 4, Pages 81S-85S (April 1981) DOI: 10.1378/chest.79.4_Supplement.81S Copyright © 1981 The American College of Chest Physicians Terms and Conditions
FIGURE 1 Symptom prevalence by exposure category. CHEST 1981 79, 81S-85SDOI: (10.1378/chest.79.4_Supplement.81S) Copyright © 1981 The American College of Chest Physicians Terms and Conditions
FIGURE 2 Chronic cough prevalence by exposure category and smoking status. CHEST 1981 79, 81S-85SDOI: (10.1378/chest.79.4_Supplement.81S) Copyright © 1981 The American College of Chest Physicians Terms and Conditions
FIGURE 3 Chronic bronchitis prevalence by exposure category and smoking status. CHEST 1981 79, 81S-85SDOI: (10.1378/chest.79.4_Supplement.81S) Copyright © 1981 The American College of Chest Physicians Terms and Conditions
FIGURE 4 Mean FEV1 shift change and chest tightness developing during the study shift. CHEST 1981 79, 81S-85SDOI: (10.1378/chest.79.4_Supplement.81S) Copyright © 1981 The American College of Chest Physicians Terms and Conditions