Krishnarajah Nirantharakumar

ORCID: 0000-0002-6816-1279 · 17 papers in corpus
qualitative 2026
Health expectations : an international journal of public participation in health care and health policy ·doi:10.1111/hex.70583

INTRODUCTION: One in five women enters pregnancy with multiple long-term health conditions, which is associated with increased risks of adverse maternal and child outcomes. There is a lack of research exploring individuals' experiences of p…

meta-analysis 2026
BMC medicine ·doi:10.1186/s12916-026-04844-6

BACKGROUND: Among women in the UK, over 186,000 new cancer diagnoses and around 78,000 cancer deaths occurred annually from 2017 to 2019. Evidence suggests that pregnancy complications are linked to mortality and morbidity risks in later li…

observational 2025
BMC medicine ·doi:10.1186/s12916-025-04229-1

BACKGROUND: Each year, over 700,000 pregnancies occur in the UK, with up to 10% affected by complications such as hypertensive disorders of pregnancy and gestational diabetes mellitus. Pregnancy-related complications and reproductive factor…

observational 2025
BMC pregnancy and childbirth ·doi:10.1186/s12884-025-07771-1

BACKGROUND: Multimorbidity in pregnancy increases health risks to women and babies, and creates challenges for services. The aim of this study was to explore the prevalence and patterns of maternal multimorbidity in a UK population. METHOD…

qualitative 2024
Health expectations : an international journal of public participation in health care and health policy ·doi:10.1111/hex.14104

INTRODUCTION: Over a fifth of pregnant women are living with multiple long-term health conditions, which is associated with increased risks of adverse outcomes for mothers and infants. While there are many examples of research exploring ind…

2024
·doi:10.1101/2024.04.09.24305328

Background Rheumatoid Arthritis (RA) is a chronic rheumatological condition which causes inflammation of both the joint lining and extra-articular sites. It affects around 1% of the UK population and, if not properly treated, can lead joint…

observational 2024
Wellcome Open Research ·doi:10.12688/wellcomeopenres.20992.2

BACKGROUND: Born in Bradford (BiB) is a family cohort study with linked routine health records. We calculated the rates of common health conditions and explored differences between White European and South Asian participants. METHODS: 21 h…

observational 2024
Journal of neurology, neurosurgery, and psychiatry ·doi:10.1136/jnnp-2024-333530

BACKGROUND: Migraine is common in women of reproductive age. This study aimed to (1) describe the prevalence of migraine in pregnant women in the UK, (2) identify drugs commonly prescribed for migraine during pregnancy and (3) identify char…

other 2023
BMJ open ·doi:10.1136/bmjopen-2022-068718

INTRODUCTION: One in five pregnant women has multiple pre-existing long-term conditions in the UK. Studies have shown that maternal multiple long-term conditions are associated with adverse outcomes. This observational study aims to compare…

observational 2023
BMC women's health ·doi:10.1186/s12905-023-02214-5

INTRODUCTION: To describe the incidence and prevalence of pelvic inflammatory disease (PID) and to estimate the risk of cardiometabolic outcomes among women with PID compared to women without PID. METHODS: A UK retrospective matched cohort…

observational 2023
BMC medicine ·doi:10.1186/s12916-023-02794-x

BACKGROUND: Female reproductive factors are gaining prominence as factors that enhance cardiovascular disease (CVD) risk; nonetheless, menstrual cycle characteristics are under-recognized as a factor associated with CVD. Additionally, there…

observational 2022
BMC pregnancy and childbirth ·doi:10.1186/s12884-022-04442-3

BACKGROUND: Although maternal death is rare in the United Kingdom, 90% of these women had multiple health/social problems. This study aims to estimate the prevalence of pre-existing multimorbidity (two or more long-term physical or mental h…

2022
BMJ medicine ·doi:10.1136/bmjmed-2022-000247

ObjectiveTo develop international consensus on the definition and measurement of multimorbidity in research.DesignDelphi consensus study.SettingInternational consensus; data collected in three online rounds from participants between 30 Nove…

other 2022
Diagnostic and prognostic research ·doi:10.1186/s41512-022-00137-7

BACKGROUND: Cardiovascular disease (CVD) is a leading cause of death among women. CVD is associated with reduced quality of life, significant treatment and management costs, and lost productivity. Estimating the risk of CVD would help patie…

observational 2022
Nature medicine ·doi:10.1038/s41591-022-01909-w

Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection is associated with a range of persistent symptoms impacting everyday functioning, known as post-COVID-19 condition or long COVID. We undertook a retrospective matched co…

observational 2021
BJOG: An International Journal of Obstetrics & Gynaecology ·doi:10.1111/1471-0528.16692

OBJECTIVE: To describe the prevalence and incidence of endometriosis and to estimate the risk of cardiovascular outcomes in women with endometriosis. DESIGN: Population-based cohort study using The Health Improvement Network database. SET…

meta-analysis 2020
BMJ (Clinical research ed.) ·doi:10.1136/bmj.m3502

OBJECTIVE: To consolidate evidence from systematic reviews and meta-analyses investigating the association between reproductive factors in women of reproductive age and their subsequent risk of cardiovascular disease. DESIGN: Umbrella revi…