nominally significantp=0.032
Supplementary data thorax-2023-220856supp002.xlsx Causal estimate for seropositive RA on IPF The primary IVW-FE analysis gave a nominally significant result for a protective causal effect of seropositive RA on IPF (OR 0.93; 95% CI 0.87 to 0.99; p=0.032) ( figure 2A and online supplemental table 6A ).