TABLE 5:
Serological Characteristics in the LO Group Compared With the Intermediate Group
| Markers | In LO | In Intermediate Group | OR | P | ||||
|---|---|---|---|---|---|---|---|---|
| + | - | % | + | - | % | |||
| ANCA | 36 | 67 | 34.95 | 516 | 1501 | 25.58 | 1.57 (1.03 to 2.38) | 0.034 |
| CBir1 | 36 | 65 | 35.64 | 966 | 1067 | 47.52 | 0.61 (0.40 to 0.93) | 0.020 |
| I2 | 36 | 39 | 48.00 | 657 | 982 | 40.09 | 1.38 (0.87 to 2.20) | 0.174 |
| OmpC | 30 | 73 | 29.13 | 531 | 1488 | 26.30 | 1.14 (0.74 to 1.77) | 0.547 |
| IgA-ASCA | 10 | 93 | 9.71 | 676 | 1316 | 33.94 | 0.21 (0.11 to 0.40) | 3.27E-06 |
| IgG-ASCA | 15 | 88 | 14.56 | 737 | 1255 | 37.00 | 0.29 (0.17 to 0.50) | 1.43E-05 |
ANCA, antinuclear cytoplasmic antibody; CBir, antiflagellin antibody; I2, antipseudomonas fluorescens-related protein; IgA and IgG-ASCA, antisaccharomyces cerevisiae antibodies IgA and IgG; Intermediate group, 5 years ≤ age at diagnosis < 55 years; LO, age at diagnosis ≥55 years; OmpC, anti-outer membrane protein C.