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Participants Attrition in a Longitudinal Study: The Malaysian Cohort Study Experience

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  • Noraidatulakma Abdullah

    (UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia)

  • Mohd Arman Kamaruddin

    (UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia)

  • Ying-Xian Goh

    (UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia)

  • Raihannah Othman

    (UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia)

  • Andri Dauni

    (UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia)

  • Nazihah Abd Jalal

    (UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia)

  • Nurul Ain Mhd Yusuf

    (UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia)

  • Salywana A. Kamat

    (UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia)

  • Nor Hazlinawati Basri

    (UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia)

  • Rahman Jamal

    (UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia)

Abstract

The attrition rate of longitudinal study participation remains a challenge. To date, the Malaysian Cohort (TMC) study follow-up rate was only 42.7%. This study objective is to identify the cause of attrition among TMC participants and the measures to curb it. A total of 19,343 TMC participants from Kuala Lumpur and Selangor that was due for follow-up were studied. The two most common attrition reasons are undergoing medical treatment at another government or private health center (7.0%) and loss of interest in participating in the TMC project (5.1%). Those who were inclined to drop out were mostly Chinese, aged 50 years and above, unemployed, and had comorbidities during the baseline recruitment. We have also contacted 2183 participants for the home recruitment follow-up, and about 10.9% agreed to join. Home recruitment slightly improved the overall follow-up rate from 42.7% to 43.5% during the three-month study period.

Suggested Citation

  • Noraidatulakma Abdullah & Mohd Arman Kamaruddin & Ying-Xian Goh & Raihannah Othman & Andri Dauni & Nazihah Abd Jalal & Nurul Ain Mhd Yusuf & Salywana A. Kamat & Nor Hazlinawati Basri & Rahman Jamal, 2021. "Participants Attrition in a Longitudinal Study: The Malaysian Cohort Study Experience," IJERPH, MDPI, vol. 18(14), pages 1-9, July.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:14:p:7216-:d:589155
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    References listed on IDEAS

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    1. Anand, Paul, 1995. "Foundations of Rational Choice Under Risk," OUP Catalogue, Oxford University Press, number 9780198774426.
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