Establishing pregnancy-specific haematological reference intervals in Ghana; a three-center cross-sectional study.

There was a general trend toward higher median haemoglobin levels with advancing age of participants as the respective median haemoglobin levels for 14 – 19 years, 20 – 29 years, 30 – 39 years, and 40 – 49 years were 10.35 g/dl, 10.80 g/dl, 11.00 g/dl, and 11.10 g/dl [fig 1B; p = 0.049 (14 – 19 years vs 30 – 39 years group; p = 0.0278 (14 – 19 years vs 40 – 49 years group)]; a similar trend was also observed when data was explored for trimester 2 (figure 1C) and trimester 3 (figure 1D) although the differences did not reach statistical significance.

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