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Table 2 Mean (± S.D) haematological values over the three trimesters of pregnancy in primigravid women in the study population.

From: Are published standards for haematological indices in pregnancy applicable across populations: an evaluation in healthy pregnant Jamaican women

Parameters Trimester 1 Trimester 2 Trimester 3 p-value
     1st & 2nd 1st & 3rd 2nd & 3rd
RBC (× 106/μl) 4.33 ± 0.40 3.80 ± 0.33 3.94 ± 0.36 0.000* 0.054 0.000*
Hb (g/dl) 12.73 ± 1.14 11.41 ± 1.16 11.67 ± 1.18 0.000* 0.000* 0.009*
PCV (%) 37.05 ± 2.96 33.12 ± 3.00 34.03 ± 2.97 0.000* 0.000* 0.000*
MCH (pg) 29.53 ± 2.92 30.15 ± 3.01 29.85 ± 3.13 0.001* 0.000* 0.024*
MCHC (g/dl) 34.35 ± 1.05 34.42 ± 1.30 34.33 ± 1.43 0.753 0.457 0.373
MCV (fl) 85.89 ± 7.28 87.49 ± 7.02 86.70 ± 6.85 0.000* 0.819 0.001*
WBC (× 103/μl) 8.27 ± 2.60 9.66 ± 2.84 8.79 ± 2.50 0.000* 0.187 0.000*
Platelets (× 103/μl) 280.55 ± 64.40 250.32 ± 67.95 234.15 ± 67.67 0.000* 0.000* 0.000*
  1. * indicates the level of significance p < 0.05.
  2. Table legend text:
  3. RBC – Red blood cell, Hb – Haemoglobin, PCV – Packed cell volume, MCH – Mean corpuscular haemoglobin, MCHC – Mean corpuscular haemoglobin concentration, MCV – Mean corpuscular volume, WBC – White blood cell