Fig. 1
The comparison of PIG-A MFs between PAH-exposed workers (N = 70) and controls (N = 56). Black line: median with interquartile range. The average PIG-A MF for the PAH-exposed workers was 8.04 ± 6.81 × 10− 6 (median: 6.00 × 10− 6; interquartile range: 3.88–10.13 × 10− 6; range: 1.00–39.50 × 10− 6). The PIG-A MF for the control group was 5.56 ± 5.26 × 10− 6 (median: 4.50 × 10− 6; interquartile range: 3.00–6.38 × 10− 6; range: 1.00–36.00 × 10− 6). **Significant differences P < .01