Figure 3.

Levels of control antibodies and anti–β₂ glycoprotein I domain 1 antibodies among Sudanese women. (a), (c) and (e) IgA/G/M rheumatoid factor (RF), (b) IgA anti–domain 1, (d) IgG anti–cyclic citrullinated peptide 2 (anti-CCP2) and (f) IgG anti–thyroid peroxidase (anti-TPO) among healthy non-pregnant, pregnant and recently delivered Sudanese females. Horizontal dotted lines represent the 95th and 99th percentiles among the healthy non-pregnant women. One healthy non-pregnant subject has anti-TPO outside the graph range, not shown in the figure but included in the statistics. Relative light unit (RLU) in panel (b) is a raw measurement unit and not a final calibrated unit. Comparisons between individual groups were made for those antibodies showing an overall significant difference between the three groups. *p < 0.05, **p < 0.01, ***p < 0.001, NS: not significant.