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Related Experiment Video

Updated: May 27, 2026

Milk Collection in the Rat Using Capillary Tubes and Estimation of Milk Fat Content by Creamatocrit
07:38

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Published on: December 16, 2015

Lactation and fertility in Rural Bangladesh.

S L Huffman, A K Chowdhury, Z M Sykes

    Population Studies
    |November 15, 2011
    PubMed
    Summary

    This study on post-partum amenorrhoea in Bangladesh found significant seasonal variations in the duration of menstrual absence after childbirth. Nutritional status, indicated by weight, had a minimal impact on these seasonal patterns.

    Area of Science:

    • Reproductive health
    • Maternal health
    • Demography

    Background:

    • Post-partum amenorrhoea (PPA) is a key factor influencing birth intervals.
    • Understanding PPA duration is crucial for family planning and public health initiatives in Bangladesh.
    • Previous studies indicated variability in PPA, necessitating further investigation into influencing factors.

    Purpose of the Study:

    • To analyze the duration of post-partum amenorrhoea in a Bangladeshi cohort.
    • To investigate the influence of seasonality and nutritional status on PPA duration.
    • To assess the consistency of reported menstrual status and PPA duration.

    Main Methods:

    • Analysis of longitudinal data from a study on post-partum women in Bangladesh.
    • Application of life table techniques to estimate median PPA duration.

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  • Stratification of data by birth season and nutritional indicators (weight, weight-for-height).

    • Main Results:

    • Aggregate menstrual status reporting showed good consistency, but individual PPA duration reporting was less consistent.
    • The median duration of post-partum amenorrhoea was 19.9 months for births in 1974.
    • Significant seasonal variations were observed, with PPA duration decreasing from 21.5 months (February births) to 16.9 months (September births).
    • Median PPA duration varied by only two months across weight quartiles, indicating minimal impact of nutritional status.
    • The observed seasonal pattern in PPA duration was consistent across different weight groups.

    Conclusions:

    • Seasonal factors exert a substantial influence on post-partum amenorrhoea duration in Bangladesh.
    • Nutritional status, as measured by weight and weight-for-height, plays a minor role in modulating PPA duration compared to seasonality.
    • Public health interventions should consider seasonal variations when addressing reproductive health and family planning in the region.