Jon Helgeland

Lumbar spine surgery across 15 years: trends, complications and reoperations in a longitudinal observational study from Norway

Margreth Grotle, Milada Cvancarova Småstuen, Olaf Fjeld et al. · BMJ Open · 2019 · 183 citations · Full text

Complications, reoperations, readmissions, and length of hospital stay in 34 639 surgical cases of lumbar disc herniation

Olaf Fjeld, Lars Grøvle, Jon Helgeland et al. · The Bone & Joint Journal · 2019 · 145 citations · Full text

Five-point scales outperform 10-point scales in a randomized comparison of item scaling for the Patient Experiences Questionnaire

Andrew Garratt, Jon Helgeland, Pål Gulbrandsen · Journal of Clinical Epidemiology · 2010 · 81 citations

Reliability, Quality Of Life, Scaling Analysis +10

Comparing Health Outcomes of Privileged US Citizens With Those of Average Residents of Other Developed Countries

Ezekiel Emanuel, Emily Gudbranson, Jessica Van Parys et al. · JAMA Internal Medicine · 2020 · 56 citations · Full text

Factors associated with hospitalization, invasive mechanical ventilation treatment and death among all confirmed COVID-19 cases in Norway: Prospective cohort study

Kjetil Telle, Mari Grøsland, Jon Helgeland et al. · Scandinavian Journal of Public Health · 2021 · 45 citations · Full text