Susan A Murphy
Biographic Data
| ID | 4168530 |
|---|---|
| NAME | Susan A Murphy |
| GIVEN NAMES | Susan A |
| FAMILY NAME | Murphy |
| SIGNATURE | MURPHY S A |
| AFFILIATIONS | University of Michigan |
| ORCID | 0000-0002-2032-4286 |
| VERIFIED | Yes |
| TOTAL WORKS | 10 |
| TOTAL CITATIONS | 95 |
| WORKS AS AUTHOR | 10 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1998 |
| LATEST PUBLICATION YEAR | 2022 |
| H-INDEX | 3 |
Engagement in digital interventions
The notion of “engagement,” which plays an important role in various domains of psychology, is gaining increased currency as a concept that is critical to the success of digital interventions. However, engagement remains an ill-defined construct, with different fields generating their own domain-specific definitions. Moreover, given that digital interactions in real-world settings are characterized by multiple demands and choice alternatives comp…
A taxonomy of risk‐associated alternative health practices
Defining alternative health care and the recording of associated adverse events and harm remains problematic. This Canadian study aimed to establish and classify risk-associated alternative health practices in a Delphi study undertaken with an interdisciplinary panel of 17 health experts in 2020. It provides a new functional definition of alternative health care and an initial taxonomy of risk-associated alternative health care practices. A numbe…
Just-in-Time Adaptive Interventions (Jitais) in Mobile Health
Screening Experiments and the Use of Fractional Factorial Designs in Behavioral Intervention Research
Health behavior intervention studies have focused primarily on comparing new programs and existing programs via randomized controlled trials. However, numbers of possible components (factors) are increasing dramatically as a result of developments in science and technology (e.g., Web-based surveys). These changes dictate the need for alternative methods that can screen and quickly identify a large set of potentially important treatment components…
The Multiphase Optimization Strategy (Most) and the Sequential Multiple Assignment Randomized Trial (SMART)
A Conceptual Framework for Adaptive Preventive Interventions
Adjusting for Time-Varying Confounding in Survival Analysis
In this paper we illustrate how directly including endogenous time-varying confounders in the model of the effect of an exposure on a response can lead to bias in discrete time survival analysis. An alternative to this method is Hernán, Brumback, and Robins' (1999) use of sample weights to adjust for endogenous time-varying confounding. We discuss when this method can be used to provide unbiased estimators, and we illustrate the method by address…
Discrete-Time Multilevel Hazard Analysis
Combining innovations in hazard modeling with those in multilevel modeling, we develop a method to estimate discrete-time multilevel hazard models. We derive the likelihood of and formulate assumptions for a discrete-time multilevel hazard model with time-varying covariates at two levels. We pay special attention to assumptions justifying the estimation method. Next, we demonstrate file construction and estimation of the models using two common s…
Changes in Parents' Mental Distress After the Violent Death of an Adolescent or Young Adult Child
This study examined changes in bereaved parents' mental distress following the violent deaths of their 12- to 28-year-old children. A community-based sample of 171 bereaved mothers and 90 fathers was recruited by a review of medical examiner records. Data were collected 4, 12, and 24 months post-death. Repeated measures analysis of variance showed significant reductions in 8 of 10 measures of mental distress among mothers and 4 of 10 for fathers,…
Drug Use Prevention Data, Missed Assessments and Survival Analysis
In prevention studies, researchers often investigate the incidence of initial drug experimentation or other drug use milestones and its relationship to individual attributes such as the level of parental monitoring or rebelliousness. In this case, survival analysis is the methodology of choice. Survival analysis methods deal efficiently with data from individuals who leave the study prematurely and do not return. However often individuals do retu…
Discrete-Time Multilevel Hazard Analysis
Combining innovations in hazard modeling with those in multilevel modeling, we develop a method to estimate discrete-time multilevel hazard models. We derive the likelihood of and formulate assumptions for a discrete-time multilevel hazard model with time-varying covariates at two levels. We pay special attention to assumptions justifying the estimation method. Next, we demonstrate file construction and estimation of the models using two common s…
Adjusting for Time-Varying Confounding in Survival Analysis
In this paper we illustrate how directly including endogenous time-varying confounders in the model of the effect of an exposure on a response can lead to bias in discrete time survival analysis. An alternative to this method is Hernán, Brumback, and Robins' (1999) use of sample weights to adjust for endogenous time-varying confounding. We discuss when this method can be used to provide unbiased estimators, and we illustrate the method by address…
Changes in Parents' Mental Distress After the Violent Death of an Adolescent or Young Adult Child
This study examined changes in bereaved parents' mental distress following the violent deaths of their 12- to 28-year-old children. A community-based sample of 171 bereaved mothers and 90 fathers was recruited by a review of medical examiner records. Data were collected 4, 12, and 24 months post-death. Repeated measures analysis of variance showed significant reductions in 8 of 10 measures of mental distress among mothers and 4 of 10 for fathers,…
Engagement in digital interventions
The notion of “engagement,” which plays an important role in various domains of psychology, is gaining increased currency as a concept that is critical to the success of digital interventions. However, engagement remains an ill-defined construct, with different fields generating their own domain-specific definitions. Moreover, given that digital interactions in real-world settings are characterized by multiple demands and choice alternatives comp…
A taxonomy of risk‐associated alternative health practices
Defining alternative health care and the recording of associated adverse events and harm remains problematic. This Canadian study aimed to establish and classify risk-associated alternative health practices in a Delphi study undertaken with an interdisciplinary panel of 17 health experts in 2020. It provides a new functional definition of alternative health care and an initial taxonomy of risk-associated alternative health care practices. A numbe…
Drug Use Prevention Data, Missed Assessments and Survival Analysis
In prevention studies, researchers often investigate the incidence of initial drug experimentation or other drug use milestones and its relationship to individual attributes such as the level of parental monitoring or rebelliousness. In this case, survival analysis is the methodology of choice. Survival analysis methods deal efficiently with data from individuals who leave the study prematurely and do not return. However often individuals do retu…
Changes in Parents' Mental Distress After the Violent Death of an Adolescent or Young Adult Child
This study examined changes in bereaved parents' mental distress following the violent deaths of their 12- to 28-year-old children. A community-based sample of 171 bereaved mothers and 90 fathers was recruited by a review of medical examiner records. Data were collected 4, 12, and 24 months post-death. Repeated measures analysis of variance showed significant reductions in 8 of 10 measures of mental distress among mothers and 4 of 10 for fathers,…
Discrete-Time Multilevel Hazard Analysis
Combining innovations in hazard modeling with those in multilevel modeling, we develop a method to estimate discrete-time multilevel hazard models. We derive the likelihood of and formulate assumptions for a discrete-time multilevel hazard model with time-varying covariates at two levels. We pay special attention to assumptions justifying the estimation method. Next, we demonstrate file construction and estimation of the models using two common s…
A Conceptual Framework for Adaptive Preventive Interventions
Adjusting for Time-Varying Confounding in Survival Analysis
In this paper we illustrate how directly including endogenous time-varying confounders in the model of the effect of an exposure on a response can lead to bias in discrete time survival analysis. An alternative to this method is Hernán, Brumback, and Robins' (1999) use of sample weights to adjust for endogenous time-varying confounding. We discuss when this method can be used to provide unbiased estimators, and we illustrate the method by address…
The Multiphase Optimization Strategy (Most) and the Sequential Multiple Assignment Randomized Trial (SMART)
Screening Experiments and the Use of Fractional Factorial Designs in Behavioral Intervention Research
Health behavior intervention studies have focused primarily on comparing new programs and existing programs via randomized controlled trials. However, numbers of possible components (factors) are increasing dramatically as a result of developments in science and technology (e.g., Web-based surveys). These changes dictate the need for alternative methods that can screen and quickly identify a large set of potentially important treatment components…
Just-in-Time Adaptive Interventions (Jitais) in Mobile Health
A taxonomy of risk‐associated alternative health practices
Defining alternative health care and the recording of associated adverse events and harm remains problematic. This Canadian study aimed to establish and classify risk-associated alternative health practices in a Delphi study undertaken with an interdisciplinary panel of 17 health experts in 2020. It provides a new functional definition of alternative health care and an initial taxonomy of risk-associated alternative health care practices. A numbe…
Engagement in digital interventions
The notion of “engagement,” which plays an important role in various domains of psychology, is gaining increased currency as a concept that is critical to the success of digital interventions. However, engagement remains an ill-defined construct, with different fields generating their own domain-specific definitions. Moreover, given that digital interactions in real-world settings are characterized by multiple demands and choice alternatives comp…
Computer Science (9 works) · Medicine (8 works) · Psychology (7 works) · Nursing (5 works) · Advanced Causal Inference Techniques (4 works) · Engineering (4 works) · Intervention (counseling) (4 works) · Psychological intervention (4 works) · Risk analysis (engineering) (4 works) · Behavioral Health and Interventions (3 works)