Table 3 Factors related to the disease free interval in Wegener's granulomatosis patients.

Co-trimoxazole

0.4

0.12-0.69

0.003

Presence of PR3-ANCA at the start of study

2.56

1.41-6.35

0.004

Chronic nasal carriage of Stapylococcus aureus MRSA

6.15

2.15-33.2

0.002

Chronic nasal carriage of Stapylococcus aureus MSSA

4.56

2.45-7.65

0.001

Nasal chronic crusting

3.45

1.56-16.7

0.0001

Upper respiratory tract infection

3.72

1.65-8.38

0.0015

Relapses in anamnesis

1.07

0.89-1.217

0.01

GFR ≤ 60 ml/min

1.67

1.37-1.6.35

0.02