Research Article
The Effect of Pregnancy in the Hemoglobin Concentration of Pregnant Women: A Longitudinal Study
Table 3
The quartiles of hemoglobin concentration during each phase of pregnancy (
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| Visit | Mean hemoglobin concentration (g/dl) | Proportion of hypochromic, microcytic anemia | 25 percentile | 50 percentile | 75 percentile |
| Before pregnancy | 10 | 11 | 12 | 63.9% | During the first trimester | 10 | 11 | 11 | 71.5% | During the second trimester | 10 | 10 | 10 | 85.5% | During the third trimester | 10 | 10 | 10 | 94.6% | During the onset of labor | 9 | 10 | 10 | 91.8% | After third stage of labor | 10 | 10 | 10 | 85.5% | After 6 weeks | 9 | 10 | 10 | 68.2% |
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