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. Author manuscript; available in PMC: 2013 Sep 17.
Published in final edited form as: Arthritis Rheum. 2012 May;64(5):1338–1344. doi: 10.1002/art.33472

Table 2. C4B Isotype Deficiency (0-1 copy of C4B gene) Relative to Ohio Control Cohort*.

Patient Odds Ratio (95% CI) p value
Non-RA 0.61 (0.35-1.06) 0.0953
All-RA 1.58 (1.10-2.29) 0.0155
Sero(+) 1.83 (1.21-2.76) 0.0056
Sero(-) 1.07 (0.55-2.07) 0.87
*

Odds ratios (OR) and 95% confidence intervals (CI) were calculated by analysis of 2 × 2 tables, using the Fisher's exact test for comparisons.