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. 2010 Jan 21;5(1):e8822. doi: 10.1371/journal.pone.0008822

Table 1. Characteristics of the study population in the mass spectrometry based proteomics study.

Primigravidae Mean (SD) Multigravidae Mean (SD) P value
Maternal age (yr) 19.4 (1.6) 26.5 (4.5) <0.0001
Placenta parasitemia (%) 2.2 (2.4) 1.04 (1.4) NS*
Hemoglobin (g/dl) 6.6 (1.96) 8 (2.9) NS*
*

NS not significant.