JMIR Research Protocols · 2013 · 14 citations · 20 references
To our knowledge, this is the largest evaluation of an SPH program in the United States. A major strength of this observational study design is that all VAMCs implemented the program and were included in Tier 1 of the study; therefore, population sampling bias is not a concern. Although the design lacks a comparison group for testing program effects, this longitudinal field study design allows for capturing program dose-response effects within a naturalistic context. Implementation of the VA-wide SPH program afforded the opportunity for rigorous evaluation in a naturalistic context. Findings will guide VA operations for policy and decision making about resources, and will be useful for health care, in general, outside of the VA, in implementation and impact of an SPH program.
20
Richard A. Brown, Trevor Hastie, Robert Tibshirani · Biometrics · 1991 · 8.3K citations
Statistical Modeling, Statistics, Generalized Additive Models +1
R 2 effect-size measures for mediation analysis
Amanda J. Fairchild, David P. MacKinnon, Marcia P. Taborga et al. · Behavior Research Methods · 2009 · 346 citations · Full text