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Table 7 Multivariate analysis of variables associated with GPA

From: Association between environmental exposures and granulomatosis with polyangiitis in Canterbury, New Zealand

Model

Variables included

Significant variables (OR (95 % CI))

 

Gardening

Digging, planting, mowing and time in garden

Digging

2.6 (1.2–5.7)

Mowing

2.3 (1.0–5.0)

Farming

Farm worker, livestock, sheep, farm any in 12 months prior to index date, farm visit in 12 months prior to index date

Farm visit

9.3 (3.2–26.7)

Farm worker

4.4 (1.9–10.3)

Dusts

Any dust, grain dust, silica dust, chemical sprays, construction, petrol/diesel fumes, hobby dust silica, solvent, metals

Grain dust

7.2 (2.7–19.4)

Hobby dust

8.1 (2.6–24.7)

Petrol/diesel

5.1 (1.2–19.9)

Solvent exposure

1.03 (1.01–1.05)

Vaccination

Vaccination

 

0.4 (0.2–0.9)

Combined

Digging, mowing, farm visit, farm worker, grain dust, hobby dust, petrol/diesel fumes, solvent exposure, vaccination

Grain dust

4.0 (1.1–13.8)

Hobby dust

8.3 (2.4–28.3)

Farm worker

3.5 (1.1–11.5)

Farm visit

8.9 (2.6–29.9)

Petrol/diesel

6.2 (1.2–32.7)

Solvent exposure

1.04 (1.02–1.07)

  1. CI confidence interval, GPA granulomatosis with polyangiitis, OR odds ratio