Impact of driver licensing renewal policies on older driver crash involvement and injury rates in 13 states, 2000-2019.

Background: Motor vehicle crashes are the second leading cause of injury death among adults aged 65 and older in the U.S., second only to falls.

Causal Mediation Analysis of Factors Influencing Physical Activity and Community Access Among People With Mild-to-Moderate Parkinson Disease.

Objective: To examine how known causal factors (exercise self-efficacy, balance, walking capacity) affect outcomes (moderate-intensity physical activity, community access) in people with Parkinson disease (PD): through a direct pathway, indirectly through potential mediators (nonmotor impairments), or through combined direct and mediated paths.

Design: Causal mediation analyses using baseline and three-month data from pooled treatment groups in a randomized controlled trial.

Setting: Data were collected at 2 university clinical research centers.

SARS-CoV-2 seropositivity among healthcare professionals in a rural state.

Objectives: We evaluated SARS-CoV-2 anti-nucleocapsid (anti-N) seroconversion and seroreversion rates, risk factors associated with SARS-CoV-2 seroconversion, and COVID-19 risk perceptions among academic healthcare center employees in a rural state.

Methods: Among employees aged ≥18 years who completed a screening survey (n = 1,377), we invited all respondents reporting previous COVID-19 (n = 85; 82 accepted) and a random selection of respondents not reporting previous COVID-19 (n = 370; 220 accepted) to participate. Participants completed surveys and provided blood samples at 3-month intervals (T0, T3, T6, T9).

Impact of 4-to-3 Lane Conversions on Emergency Response.

4-to-3 lane conversions, often called road diets, have been implemented throughout the U.S. as a means to reduce crashes.