Nicholas Leyland

No ORCID on file · 53 papers in corpus · active 2003-2026

Study types

  • article 44
  • review 3
  • case-report 2
  • other 2
  • letter 1

Condition tags

  • endometriosis 37
  • mesh:D004715 22
  • mesh:D017699 8
  • dyspareunia 7
  • dysmenorrhea 6
  • mesh:D004412 5
  • infertility 2
  • bowel_endometriosis 2
  • endometrioma 2
  • mesh:D004414 2
other 2026
Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC ·doi:10.1016/j.jogc.2025.103188

Endometriosis affects 1 in 10 Canadians; however, its financial toxicity remains poorly understood. While universal health care covers physician and hospital services, patients face substantial out-of-pocket costs for medications, complemen…

article 2024
CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne ·doi:10.1503/cmaj.240278

Lower rates of minimally invasive procedures predispose patients to complications. [1][1] Providers should ensure that all patients receive high-quality care and are aware of all treatment options. Providers should consider access to medica…

article 2024
·doi:10.1016/j.jogc.2024.102451
article 2024
Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC ·doi:10.1016/j.jogc.2024.102450
article 2024
·doi:10.1503/cmaj.240278-f

[Voir la version anglaise de l’article ici : www.cmaj.ca/lookup/doi/10.1503/cmaj.240278][1] Le taux inférieur d’interventions minimalement effractives prédispose la patientèle racisée à des complications[1][2]. Les prestataires doivent s’as…

letter 2022
Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC ·doi:10.1016/j.jogc.2022.02.127
article 2022
Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC ·doi:10.1016/j.jogc.2022.11.003
review 2021
Journal of women's health (2002) ·doi:10.1089/jwh.2019.8096

Pain associated with endometriosis is a considerable burden for women, permeating all aspects of their lives, from their ability to perform daily activities to their quality of life. Although there are many options for endometriosis-associa…

article 2021
Frontiers in reproductive health ·doi:10.3389/frph.2021.692249

Extrapelvic endometriosis, although rare, can present in the musculoskeletal system of reproductive-age women and cause significant pain and morbidity. The pathophysiology of this disease is not well understood. In this study, we described …

article 2021
Scientific reports ·doi:10.1038/s41598-021-98380-3

Endometriosis is a chronic, estrogen-dependent gynecological condition affecting approximately 10% of reproductive age women. The most widely accepted theory of its etiology includes retrograde menstruation. Recent reports suggest the uteru…

review 2021
International journal of general medicine ·doi:10.2147/IJGM.S261139

Endometriosis may exert a profound negative influence on the lives of individuals with the disorder, adversely affecting quality of life, participation in daily and social activities, physical and sexual functioning, relationships, educatio…

other 2021
Journal of minimally invasive gynecology ·doi:10.1016/j.jmig.2021.06.022
article 2020
Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC ·doi:10.1016/j.jogc.2020.04.013
article 2020
Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC ·doi:10.1016/j.jogc.2020.06.022
article 2020
·doi:10.1016/j.jogc.2020.02.032
article 2020
Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC ·doi:10.1016/j.jogc.2019.10.038

OBJECTIVE: This study sought to estimate the prevalence of diagnosis of endometriosis (DxE) in Canada and to assess the symptomatic and diagnostic experience of Canadian women with DxE. METHOD: A cross-sectional, online survey of women in C…

article 2020
·doi:10.1177/2284026520960855

Introduction: We aimed to characterize the treatment patterns of women with a self-reported diagnosis of endometriosis in Canada. Methods: Between December 2018 and January 2019 an online cross-sectional survey was administered to women age…

article 2019
·doi:10.1177/2284026519864232

Background: The daily pain burden experienced by women with endometriosis has not been well studied. Objective: To characterize baseline pain among women with moderate-to-severe endometriosis-associated pain enrolled in phase 3 studies of e…

article 2019
American journal of obstetrics and gynecology ·doi:10.1016/j.ajog.2018.12.039
article 2019
·doi:10.1177/2284026519872401

Objectives: The objective was to evaluate the effects of elagolix on dyspareunia in women with endometriosis-associated pain. Methods: Data were pooled from two similar, randomized, double-blind, placebo-controlled, 6-month phase 3 studies …

article 2019
Human Reproduction ·doi:10.1093/humrep/dez082

STUDY QUESTION: Are melatonin receptors (melatonin receptor 1A (MR1A) and melatonin receptor 1B (MR1B)) expressed in human endometrium and endometriotic tissue, and does melatonin affect endometrial cell proliferation? SUMMARY ANSWER: Melat…

article 2019
·doi:10.1016/j.jogc.2019.02.211
article 2019
·doi:10.1016/j.jogc.2019.02.133
article 2018
·doi:10.1097/01.aog.0000533223.29391.43

INTRODUCTION: Few data exist on the extent of symptoms in women with endometriosis. This analysis examined baseline pain burden among women with moderate to severe endometriosis pain in two phase 3 studies of elagolix (an oral, non-peptide …

article 2018
·doi:10.1016/j.fertnstert.2018.07.053