Background Concussion is the most common injury in youth ice hockey. Whether mouthguard use lowers the odds of concussion remains an unanswered question. Objective To determine the association between ...

We performed separate nested case-control analyses in two national cohorts of women who received chemotherapy for incident breast cancer. Cohorts were identified from Medicare (≥ 65 years of age) and ...

We conducted a nested case-control study within the Japan Public Health Center–based Prospective Study. A total of 14,203 men aged 40 to 69 years who had returned the baseline questionnaire and ...

Source Reference: Fitzpatrick D, et al "Combined and progestagen-only hormonal contraceptives and breast cancer risk: a U.K. nested case-control study and meta-analysis" PLOS Med 2023; DOI: 10. ...

Methods: Using a nested case–control study design, we obtained data from the Quebec Pregnancy Registry for 5124 women who had a clinically detected spontaneous abortion. For each case, we randomly ...

Methods: Using a nested case–control design, we obtained data from the Quebec Pregnancy Registry for 4705 women who had a spontaneous abortion. For each instance, we randomly selected 10 controls from ...

Psoriatic Arthritis Incidence Among Patients Receiving Biologic Medications for Psoriasis: A Nested Case Control Study – An American College of Rheumatology Reading Room selection October 15, 2021 ...

Toffol E, et al. Use of hormonal contraception and attempted suicide: A nested case-control study. Presented at: European Congress of Psychiatry; June 4-7, 2022 (virtual meeting).