Evaluating associations between patient-to-nurse ratios and mortality, process of care events and vital sign documentation on paediatric wards: a secondary analysis of data from the EPOCH cluster-randomised trial.

Objective: To describe the associations between patient-to-nurse staffing ratios and rates of mortality, process of care events and vital sign documentation.

Design: Secondary analysis of data from the evaluating processes of care and outcomes of children in hospital (EPOCH) cluster-randomised trial.

Setting: 22 hospitals caring for children in Canada, Europe and New Zealand.

Short Cervix Following Initial Cerclage-Reinforcing Cerclage Versus Expectant Management.

Objectives: To determine whether reinforcing cerclage following ultrasound evidence of cerclage failure before 24 weeks is an effective method to delay gestational age at delivery, and to decrease the rate of preterm and peri-viable delivery.

Methods: A retrospective review was conducted for all patients who underwent any cervical cerclage procedure at a single tertiary care centre in Toronto, Canada between 1 December 2007 and 31 December 2017.

Results: Of 1482 cerclage procedures completed during the study period, 40 pregnant persons who underwent reinforcing cerclage were compared with 40 pregnant persons who were found to have cerclage failure before 24 weeks but were managed expectantly.

COVID-19 breakthrough infections in vaccinated participants of the Safety and Efficacy of Preventative COVID Vaccines sub-study.

Background: The rate of breakthrough infection in vaccinated Ontarians during the Omicron wave is unknown.

Methods: Active participants of the Safety and Efficacy of Preventative COVID Vaccines (STOPCoV) study (892 ≥age 70 years and 369 aged 30-50 years) were invited to participate in a sub-study evaluating breakthrough COVID-19 infection. Self-administered rapid antigen tests (RAT) were reported twice weekly and symptom questionnaires weekly for 6 weeks.

Decentralized study of COVID Vaccine Antibody Response (STOPCoV): Results of a participant satisfaction survey.

The Covid-19 pandemic required many clinical trials to adopt a decentralized framework to continue research activities during lock down restrictions. The STOPCoV study was designed to assess the safety and efficacy of Covid-19 vaccines in those aged 70 and above compared to those aged 30-50 years of age. In this sub-study we aimed to determine participant satisfaction for the decentralized processes, accessing the study website and collecting and submitting study specimens.

COVID-19 vaccine antibody responses in community-dwelling adults to 48 weeks post primary vaccine series.

We report a decentralized prospective cohort study of self-reported adverse events and antibody responses to COVID vaccines derived from dried blood spots. Data are presented for 911 older (aged >70 years) and 375 younger (30-50 years) recruits to 48 weeks after the primary vaccine series. After a single vaccine, 83% younger and 45% older participants had overall seropositivity (p < 0.