The objective of this meta-epidemiological study was to explore the impact of attrition rates on treatment effect estimates in randomised trials of chronic inflammatory diseases (CID) treated with biological and targeted synthetic disease-modifying drugs. We sampled trials from Cochrane reviews. Attrition rates and primary endpoint results were…

Research consistently shows that among young children, poor social skills and problem behaviors can lead to poor relationships with teachers and peers (Boivin et al., 1995), higher risk of academic failure (Buhs et al., 2006), and higher school dropout (Gilliam, 2005). Moreover, prekindergarten (PreK) and kindergarten (K) teachers report feeling…

The use of singular methodologies has dominated emotional and behavioral disorder (EBD) intervention research, and by extension, the field has not deployed mixed-methods research (MMR). The purpose of this article is to provide an overview of MMR and demonstrate its utility for conducting EBD intervention research. The basic tenants and design…

After nearly four decades of growth, the number of people held in U.S. prisons has begun to decline. In an era of decarceration, social scientists need to understand prisoner reentry experiences. Longitudinal studies are one strategy to accomplish this goal. Yet, the retention of a formerly incarcerated population across waves of interviews is…

Childhood obesity is one of the most serious challenges of the 21st century and it is vital that evidence-based treatment approaches can be translated into practice to meet public health needs. Yet policy-makers cannot afford to wait for the results of lengthy trials before "probably efficacious" interventions are made available to the public, and…

The teaching profession faces a shortage as well as a decline of teaching skills. A possible way to mitigate this is to implement evidence-based induction arrangements. Seventy-one schools with 338 beginning secondary education teachers were randomly allocated to an experimental or a control group. The experimental schools used induction…

Planning plays an instrumental role in prominent self-regulation theories (e.g., action regulation, control, goal setting), yet as a scientific community we know little about how people carry out their learning plans. Using an experimental field study, we implemented a repeated-measures intervention requiring trainees to create a plan for when,…

Drawing on our five years of experience developing WWC evidence standards and reviewing studies against those standards as well as current literature on the design of impact studies, we highlight in this paper some of the most critical issues and common pitfalls in designing and conducting impact studies in education, and provide practical…

Teacher attrition is a threat to public education in the United States. However, little information exists regarding teacher attrition and its root causes in international schools. Research, such as Barnett and McCormick's (2004) "Leadership and Individual Principal-Teacher Relationships in Schools" and Rockoff's (2004) "The Impact…

This report presents the results of an experiment conducted in Alabama beginning in the 2006/07 school year, to determine the effectiveness of the Alabama Math, Science, and Technology Initiative (AMSTI), which aims to improve mathematics and science achievement in the state's K-12 schools. This study is the first randomized controlled trial…

This study examined the association between ecological context (extrafamilial, familial, child factors) at baseline and longitudinal retention of families in the 36-month assessment of an adolescent alcohol and tobacco use prevention program that was conducted within a pediatric primary care setting. A total of 1,780 families were enrolled at…

Studied the effects of program and patient characteristics on patient retention in residential, out-patient, and methadone maintenance drug treatment programs. Data for 26,047 patients in 87 programs show that threshold retention rates were generally low for all 3 program types, although program practice and service provision played important…

The study under review is the second-year evaluation report of the Milwaukee Parental Choice Program (MPCP), a publicly funded voucher program that allows low-income students in Milwaukee to attend secular and religious private schools in that city. Its primary finding is that there were no overall statistically significant differences in…

This report examines the management of three areas related to the preparation of volunteers for Peace Corps service: staging, pre-service training, and attrition. The introduction summarizes the activities undertaken by the review. Chapter 2 focuses on staging, which is variously intended to provide country orientation, information about Peace…

A strategy proposed by T. Cook and D. Campbell (1979) was used to investigate attrition in a community-based literacy program, focusing on 287 Head Start families. Data revealed interactions among intervention program-centered characteristics and person-centered characteristics that have implications for study validity and generalizability.…