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Table 2 The effects of ambient respiratory virus on incident RA

From: Respiratory viral infections and the risk of rheumatoid arthritis

Virus Percent change in incident RA per 1-unit change in the detection rate of virusa 95% CI P value
Adenovirus at lag1–6w 1.93 − 1.14 to 5.09 .220
Parainfluenza virus at lag1–7w 4.80 1.57 to 8.14 .003
Respiratory syncytial virus at lag1w − 0.06 − 0.82 to 0.71 .873
Influenza virus at lag1–6w 0.42 − 0.68 to 1.53 .446
Corona virus at lag1–6w 9.20 3.85 to 14.82 < .001
Rhinovirus at lag1–8w 1.54 − 2.19 to 5.42 .423
Bocavirus at lag1–8w 13.33 − 1.57 to 30.48 .082
Metapneumovirus at lag1–6w 44.02 1.98 to 103.39 .038
  1. The moving average lag up to 8 lag weeks (lag1–8) was used in the analysis. For example, “lag1–8” refers to a moving average lag model for respiratory viral infections over the previous 8 weeks
  2. CI confidence interval
  3. aRelative risk adjusted for mean particulate matter < 10 μg/m3 in aerodynamic diameter, ozone, temperature, humidity, amount of solar exposure, and seasonality