scholarly journals Police killings and their spillover effects on the mental health of black Americans: a population-based, quasi-experimental study

The Lancet ◽  
2018 ◽  
Vol 392 (10144) ◽  
pp. 302-310 ◽  
Author(s):  
Jacob Bor ◽  
Atheendar S Venkataramani ◽  
David R Williams ◽  
Alexander C Tsai
Keyword(s):  
Mental Health ◽  
Experimental Study ◽  
Black Americans ◽  
Spillover Effects ◽  
Population Based ◽  
Quasi Experimental

scholarly journals Reply to: Nix and Lozada (2020), “Do police killings of unarmed persons really have spillover effects? Reanalyzing Bor et al. (2018)”

2020 ◽  
Author(s):  
Jacob Brr ◽  
Atheendar Venkataramani ◽  
David Williams ◽  
Alexander C. Tsai
Keyword(s):  
Mental Health ◽  
Health Outcomes ◽  
State Level ◽  
Spillover Effects ◽  
Population Based ◽  
Mental Health Outcomes ◽  
Point Estimate ◽  
Police Violence ◽  
Quasi Experimental ◽  
Project Data

Nix and Lozada (2020) provide a critique of our 2018 paper, “Police killings and their spillover effects on the mental health of black Americans: a population-based, quasi-experimental study.” They take issue to our use of crowdsourced data from the Mapping Police Violence project database on whether or not a given victim was unarmed, our main exposure measure, and argue that 93 cases were miscoded as unarmed in these data. They then argue that recoding or dropping these 30% cases led to an attenuated and statistically non-significant estimate of the effect of these events on mental health outcomes among black American adults. In this reply, we argue that (1) our use of the Mapping Police Violence project data was carefully considered and scientifically valid both from a theoretical and analytic perspective, and (2) that the difference between our estimates and Nix and Lozada’s do not arise from “miscoding” as the authors claim, but rather a different definition of what constitutes an unarmed victim. To probe the robustness of our results, we estimate 128 regressions models representing all combinations of exclusions of the seven classes of events Nix and Lozada dispute as being unarmed. The estimates are uniformly positive (i.e., all indicative of a harmful relationship between exposure to these events at the state-level and mental health outcomes), and the range of estimates overlap substantially with the 95% confidence interval for our original point estimate.

Effect of Pokémon GO on incidence of fatal traffic injuries: a population-based quasi-experimental study using the national traffic collisions database in Japan

2017 ◽  
Vol 24 (6) ◽  
pp. 448-450 ◽  
Author(s):  
Sachiko Ono ◽  
Yosuke Ono ◽  
Nobuaki Michihata ◽  
Yusuke Sasabuchi ◽  
Hideo Yasunaga
Keyword(s):  
Experimental Study ◽  
Traffic Accident ◽  
Regression Discontinuity ◽  
Population Based ◽  
National Data ◽  
Difference In Differences ◽  
Quasi Experimental ◽  
Accident Research ◽  
Pokémon Go ◽  
Augmented Reality Game

Pokémon GO (Niantic Labs, released on 22 July 2016 in Japan) is an augmented reality game that gained huge popularity worldwide. Despite concern about Pokémon GO–related traffic collisions, the effect of playing Pokémon GO on the incidence of traffic injuries remains unknown. We performed a population-based quasi-experimental study using national data from the Institute for Traffic Accident Research and Data Analysis, Japan. The outcome was incidence of traffic injuries. Of 127 082 000 people in Japan, 886 fatal traffic injuries were observed between 1 June and 31 August in 2016. Regression discontinuity analysis showed a non-significant change in incidence of fatal traffic injuries after the Pokémon GO release (0.017 deaths per million, 95%CI −0.036 to 0.071). This finding was similar to that obtained from a difference-in-differences analysis. Effect of Pokémon GO on fatal traffic injuries may be negligible.

The effects of state earned income tax credits on mental health and health behaviors: A quasi-experimental study

2021 ◽  
Vol 276 ◽  
pp. 113274
Author(s):  
Daniel F. Collin ◽  
Laura S. Shields-Zeeman ◽  
Akansha Batra ◽  
Justin S. White ◽  
Michelle Tong ◽  
...  
Keyword(s):  
Mental Health ◽  
Experimental Study ◽  
Health Behaviors ◽  
Income Tax ◽  
Tax Credits ◽  
Earned Income ◽  
Quasi Experimental

scholarly journals Do police killings of unarmed persons really have spillover effects? Reanalyzing Bor et al. (2018)

2020 ◽  
Author(s):  
Justin Nix ◽  
M. James Lozada
Keyword(s):  
Mental Health ◽  
General Population ◽  
Police Officers ◽  
Black Americans ◽  
Spillover Effects ◽  
Black American ◽  
Police Violence ◽  
Crowdsourced Data

We reevaluate the claim from Bor et al. (2018: 302) that “police killings of unarmed black Americans have effects on mental health among black American adults in the general population.” The Mapping Police Violence data used by the authors includes 91 incidents involving black decedents who were either (1) not killed by police officers in the line of duty or (2) armed when killed. These incidents should have been removed or recoded prior to analysis. Correctly recoding these incidents decreased in magnitude all of the reported coefficients, and, more importantly, eliminated the reported statistically significant effect of exposure to police killings of unarmed black individuals on the mental health of black Americans in the general population. We caution researchers to vet carefully crowdsourced data that tracks police behaviors and warn against reducing these complex incidents to overly simplistic armed/unarmed dichotomies.

scholarly journals Efecto de la práctica de actividad física gamificada en el estado de ánimo de jugadoras de baloncesto en etapa de confinamiento (Effect of gamified physical activity practice on the mood of female basketball players in confinement stage)

Retos ◽  
2021 ◽  
Vol 43 ◽  
pp. 10-16
Author(s):  
Alberto Rodríguez Cayetano ◽  
Estela Vicente Rivera ◽  
José Manuel De Mena Ramos ◽  
Salvador Pérez Muñoz
Keyword(s):  
Mental Health ◽  
Physical Activity ◽  
Experimental Study ◽  
Mood States ◽  
Profile Of Mood States ◽  
Emotional States ◽  
Basketball Players ◽  
Before And After ◽  
Quasi Experimental ◽  
Salud Mental

El objetivo principal de esta investigación es analizar el efecto en el estado de ánimo de jugadoras de baloncesto, a través de la práctica de actividad física gamificada durante la etapa de confinamiento debido a la COVID-19. La muestra utilizada fue de 26 jugadoras de tres categorías diferentes: infantil, juvenil y senior, con una media de edad de 16.65 (±3.84) años. Para analizar el efecto sobre el estado de ánimo, se realizó un estudio cuasi-experimental a través de un estudio con un pretest, una intervención y un postest final, proporcionando el cuestionario de Profile of Mood States (POMS) antes y después de cada sesión. Los resultados obtenidos mostraron mejoras en el estado de ánimo, disminuyendo los valores que se relacionan con estados emocionales negativos. Durante etapas de confinamiento, es importante aportar programas de actividad física para mejorar la salud mental de las jugadoras de baloncesto, las cuales están acostumbradas a una práctica de actividad física regular. Abstract. The main objective of this research is to analyze the effect on the mood of female basketball players, through the practice of gamified physical activity during the confinement stage due to COVID-19. The sample used was 26 players from three different categories: U14, U18 and senior, with an average age 16.65 (3.84) years. To analyze the effect on the players' mood, a quasi-experimental study was conducted through a pretest, an intervention and a final posttest, providing the Profile of Mood States (POMS) questionnaire before and after each session. The results obtained showed improvements in the players' mood was produced due to the practice of gamified physical activity, decreasing the values that are related to negative emotional states. During times of confinement, it is important to provide physical activity programs to improve the mental health of female basketball players, who are accustomed to practice regular physical activity.

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