Adaptive Just-in-Time Intervention to Reduce Everyday Stress Responses: Protocol for a Randomized Controlled Trial.

Background: Personalized approaches to behavior change to improve mental and physical health outcomes are needed. Reducing the intensity, duration, and frequency of stress responses is a mechanism for interventions to improve health behaviors. We developed an ambulatory, dynamic stress measurement approach that can identify personalized stress responses in the moments and contexts in which they occur; we propose that intervening in these stress responses as they arise (ie, just in time; JIT) will result in positive impacts on health behaviors.

Do delayed responses introduce bias in ecological momentary assessment? Evidence from comparisons between self-reported and objective physical activity.

Introduction: Delayed responses are a common yet often overlooked aspect of participant compliance in ecological momentary assessment (EMA) research. This study investigated whether response delays introduce selection bias in the moments captured by EMA.

Methods: Participants ( = 339) self-reported their physical activity behaviors using EMA five times a day over 7 days while wearing a continuous physical activity monitor.

Characterizing the within-person variability of food insecurity in everyday life.

Food insecurity (FI), the lack of access to adequate food, is linked with negative health and psychological outcomes. FI is typically measured retrospectively over the last year; although this measurement is useful to understand FI prevalence to inform broad policy, it leaves the experience of FI in everyday life poorly understood. Understanding how FI varies across shorter periods of time (days or weeks) can help inform FI prevention and/or intervention.

Perspectives on Frailty Among Emergency Physicians: A Qualitative Descriptive Study.

Background The proportion of older people in the general population is rising. Accompanying this rise is an increased prevalence of frailty. Frailty is a syndrome of increased vulnerability to stressors due to decreased physiological reserve and is linked to increased health services use.