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. 2019 Jul 8;21(5):485–494. doi: 10.1177/1099800419858670

Figure 3.

Figure 3.

Superoxide dismutase (SOD) levels (means and standard errors of the means) over time for the maternal–fetal medicine (▴: MFM) and general obstetrics practice (▪: GOP) groups. SOD levels remained stable over time for MFM pregnancies but changed significantly over time for GOP pregnancies, χ2(4) = 11.58, p = .021; specifically, analyses revealed a trend toward a significant difference between blood obtained at 12–20 weeks and that obtained during labor (z = −2.61, p = .09). Reported p values for the pairwise comparisons include the Bonferroni correction.