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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

Figure 1. Distribution patterns of C4, C4A, and C4B gene copy number (GCN) among healthy controls, non-RA and RA patients.

Figure 1

Chi-square analysis show emboldened values for statistically significant differences in distribution of C4A (p=0.0117) and C4B (p=0.0364) in the healthy volunteers relative to RA populations. Between the Non-RA (n=88) and RA (n=160) populations, significant differences were only seen for C4B (p=0.0058).