Medical Knowledge

Analysis of Breast Cancer Mortality in the US1975 to 2019

Importance  Breast cancer mortality in the US declined between 1975 and 2019. The association of changes in metastatic breast cancer treatment with improved breast cancer mortality is unclear. Objective  To simulate the relative associations of breast cancer screening, treatment of stage I…

Recommendations to Improve Quality of Probiotic Systematic Reviews With Meta-Analyses

Importance  Systematic reviews and meta-analyses often report conflicting results when assessing evidence for probiotic efficacy, partially because of the lack of understanding of the unique features of probiotic trials. As a consequence, clinical decisions on the use of probiotics have been…

Cannabis Exposure and Adverse Pregnancy Outcomes Related to Placental Function

Importance  Cannabis use is increasing among reproductive-age individuals and the risks associated with cannabis exposure during pregnancy remain uncertain. Objective  To evaluate the association between maternal cannabis use and adverse pregnancy outcomes known to be related to placental function. Design, Setting, and…