The Effect of Pregnancy in the Hemoglobin Concentration of Pregnant Women: A Longitudinal Study

Table 2

The hemoglobin concentration during the phases of pregnancy ().

Visit	Mean hemoglobin concentration (g/dl)
	Primi [95% CI]	Multi [95% CI]
Before pregnancy	12.41 [12.35-12.46]	10.78 [10.79-10.82]
During the first trimester	10.67 [10.56-10.77]	10.49 [10.46-10.52]
During the second trimester	10.11 [10.06-10.16]	10.73 [10.67-10.78]
During the third trimester	10.11 [10.06-10.16]	10.64 [10.55-10.73]
During the onset of labor	10.37 [10.26-10.19]	9.10 [9.05-9.15]
After third stage of labor	10.37 [10.26-10.19]	10.00 [9.99-10.01]
After 6 weeks	9.89 [9.77-10.01]	9.31 [9.26-9.35]