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Okabayashi S, Matsuyama T, Kitamura T, et al. Outcomes of Patients 65 Years or Older After Out-of-Hospital Cardiac Arrest Based on Location of Cardiac Arrest in Japan. JAMA Netw Open. 2019;2(3):e191011. doi:10.1001/jamanetworkopen.2019.1011, Importance: Out-of-hospital cardiac arrest (OHCA) is a major public health issue, and in recent years, the number of OHCAs among the elderly population, aged 65 years or older, has significantly increased in developed countries. Objective: To evaluate the demographic and clinical characteristics and outcomes of patients 65 years or older who experienced OHCA based on the location-public, residential, or nursing home-where it occurred in Japan. Design, Setting, and Participants: This prospective, nationwide, population-based cohort study used information collected by the All-Japan Utstein Registry to examine data from 293 615 patients 65 years or older who experienced OHCA during the period from January 2013 to December 2015 in Japan. Data analyses were conducted from June to July 2018. Main Outcomes and Measures: The primary outcome was 1-month survival with a favorable outcome that was defined as a cerebral performance category score of 1 or 2 (1, good cerebral performance; 2, moderate cerebral disability; 3, severe cerebral disability; 4, coma or vegetative state; and 5, death or brain death). Multivariable logistic regression analyses were conducted to examine favorable outcome by location. Results: A total of 233 511 patients with OHCA were included in the final analysis; 29 911 (12.8%) occurred in a public location, 157 087 (67.3%) at a residential location, and 46 513 (19.9%) at a nursing home. The median age of the patients was 83.0 years (interquartile range, 76.0-88.0 years), and the proportion of men was 53.1% (124 108 of 233 511). The proportion of favorable neurologic outcomes was 4.5% (1351 of 29 911) in public locations, 1.0% (1555 of 157 087) in residential locations, and 0.6% (301 of 46 513) in nursing homes. Patients with cardiac arrests in public locations had a significantly higher likelihood of achieving a favorable neurologic outcome than those in residential locations (adjusted odds ratio, 1.36; 95% CI, 1.25-1.48), whereas those in nursing home

Matsui S, Kitamura T, Kiyohara K, et al. Sex Disparities in Receipt of Bystander Interventions for Students Who Experienced Cardiac Arrest in Japan. JAMA Netw Open. 2019;2(5):e195111. doi:10.1001/jamanetworkopen.2019.5111, Importance: Bystander interventions are a factor for improving survival of out-of-hospital cardiac arrest (OHCA), but it is hypothesized that girls and women experiencing OHCA may be less likely to receive bystander interventions than boys and men. Objective: To investigate sex disparities in receiving public-access automated external defibrillator (AED) pad application and bystander-initiated cardiopulmonary resuscitation (CPR) among students who experienced OHCA in school settings. Design, Setting, and Participants: This nationwide cohort study used the Stop and Prevent Cardiac Arrest, Injury, and Trauma in Schools (SPIRITS) database to link databases from 2 nationally representative registries-the Injury and Accident Mutual Aid Benefit System of the Japan Sport Council and the All-Japan Utstein Registry of the Fire and Disaster Management Agency. Students from elementary schools (ages 6-12 years), junior high schools (ages 12-15 years), high schools (ages 15-21 years), and technical colleges (ages 15-21 years) who experienced nontraumatic OHCA involving attempted resuscitation by emergency medical service personnel or bystanders in school settings from April 1, 2008, to December 31, 2015, were included. Data analysis was performed from January 5, 2019, to April 11, 2019. Exposures: Sex and school level. Main Outcomes and Measures: Application of public-access AED pads or initiation of CPR by a bystander. Results: A total of 232 students who experienced OHCA with nontraumatic causes in school settings (mean [SD] age, 14.5 [2.9] years; 175 [75.4%] male) were included. In multivariable analysis of the full cohort of students who experienced OHCA, female sex was associated with significantly lower odds of receiving public-access AED pad application compared with male sex (36 of 57 female students [63.2%] received AED pad application vs 141 of 175 male students [80.6%]; adjusted odds ratio [OR], 0.44; 95% CI, 0.20-0.97; P=.04). In the subgroup analysis of students who

Okabayashi S, Matsuyama T, Kitamura T, et al. Outcomes of Patients 65 Years or Older After Out-of-Hospital Cardiac Arrest Based on Location of Cardiac Arrest in Japan. JAMA Netw Open. 2019;2(3):e191011. doi:10.1001/jamanetworkopen.2019.1011, Importance: Out-of-hospital cardiac arrest (OHCA) is a major public health issue, and in recent years, the number of OHCAs among the elderly population, aged 65 years or older, has significantly increased in developed countries. Objective: To evaluate the demographic and clinical characteristics and outcomes of patients 65 years or older who experienced OHCA based on the location-public, residential, or nursing home-where it occurred in Japan. Design, Setting, and Participants: This prospective, nationwide, population-based cohort study used information collected by the All-Japan Utstein Registry to examine data from 293 615 patients 65 years or older who experienced OHCA during the period from January 2013 to December 2015 in Japan. Data analyses were conducted from June to July 2018. Main Outcomes and Measures: The primary outcome was 1-month survival with a favorable outcome that was defined as a cerebral performance category score of 1 or 2 (1, good cerebral performance; 2, moderate cerebral disability; 3, severe cerebral disability; 4, coma or vegetative state; and 5, death or brain death). Multivariable logistic regression analyses were conducted to examine favorable outcome by location. Results: A total of 233 511 patients with OHCA were included in the final analysis; 29 911 (12.8%) occurred in a public location, 157 087 (67.3%) at a residential location, and 46 513 (19.9%) at a nursing home. The median age of the patients was 83.0 years (interquartile range, 76.0-88.0 years), and the proportion of men was 53.1% (124 108 of 233 511). The proportion of favorable neurologic outcomes was 4.5% (1351 of 29 911) in public locations, 1.0% (1555 of 157 087) in residential locations, and 0.6% (301 of 46 513) in nursing homes. Patients with cardiac arrests in public locations had a significantly higher likelihood of achieving a favorable neurologic outcome than those in residential locations (adjusted odds ratio, 1.36; 95% CI, 1.25-1.48), whereas those in nursing home

Matsui S, Kitamura T, Kiyohara K, et al. Sex Disparities in Receipt of Bystander Interventions for Students Who Experienced Cardiac Arrest in Japan. JAMA Netw Open. 2019;2(5):e195111. doi:10.1001/jamanetworkopen.2019.5111, Importance: Bystander interventions are a factor for improving survival of out-of-hospital cardiac arrest (OHCA), but it is hypothesized that girls and women experiencing OHCA may be less likely to receive bystander interventions than boys and men. Objective: To investigate sex disparities in receiving public-access automated external defibrillator (AED) pad application and bystander-initiated cardiopulmonary resuscitation (CPR) among students who experienced OHCA in school settings. Design, Setting, and Participants: This nationwide cohort study used the Stop and Prevent Cardiac Arrest, Injury, and Trauma in Schools (SPIRITS) database to link databases from 2 nationally representative registries-the Injury and Accident Mutual Aid Benefit System of the Japan Sport Council and the All-Japan Utstein Registry of the Fire and Disaster Management Agency. Students from elementary schools (ages 6-12 years), junior high schools (ages 12-15 years), high schools (ages 15-21 years), and technical colleges (ages 15-21 years) who experienced nontraumatic OHCA involving attempted resuscitation by emergency medical service personnel or bystanders in school settings from April 1, 2008, to December 31, 2015, were included. Data analysis was performed from January 5, 2019, to April 11, 2019. Exposures: Sex and school level. Main Outcomes and Measures: Application of public-access AED pads or initiation of CPR by a bystander. Results: A total of 232 students who experienced OHCA with nontraumatic causes in school settings (mean [SD] age, 14.5 [2.9] years; 175 [75.4%] male) were included. In multivariable analysis of the full cohort of students who experienced OHCA, female sex was associated with significantly lower odds of receiving public-access AED pad application compared with male sex (36 of 57 female students [63.2%] received AED pad application vs 141 of 175 male students [80.6%]; adjusted odds ratio [OR], 0.44; 95% CI, 0.20-0.97; P=.04). In the subgroup analysis of students who

Okabayashi S, Matsuyama T, Kitamura T, et al. Outcomes of Patients 65 Years or Older After Out-of-Hospital Cardiac Arrest Based on Location of Cardiac Arrest in Japan. JAMA Netw Open. 2019;2(3):e191011. doi:10.1001/jamanetworkopen.2019.1011, Importance: Out-of-hospital cardiac arrest (OHCA) is a major public health issue, and in recent years, the number of OHCAs among the elderly population, aged 65 years or older, has significantly increased in developed countries. Objective: To evaluate the demographic and clinical characteristics and outcomes of patients 65 years or older who experienced OHCA based on the location-public, residential, or nursing home-where it occurred in Japan. Design, Setting, and Participants: This prospective, nationwide, population-based cohort study used information collected by the All-Japan Utstein Registry to examine data from 293 615 patients 65 years or older who experienced OHCA during the period from January 2013 to December 2015 in Japan. Data analyses were conducted from June to July 2018. Main Outcomes and Measures: The primary outcome was 1-month survival with a favorable outcome that was defined as a cerebral performance category score of 1 or 2 (1, good cerebral performance; 2, moderate cerebral disability; 3, severe cerebral disability; 4, coma or vegetative state; and 5, death or brain death). Multivariable logistic regression analyses were conducted to examine favorable outcome by location. Results: A total of 233 511 patients with OHCA were included in the final analysis; 29 911 (12.8%) occurred in a public location, 157 087 (67.3%) at a residential location, and 46 513 (19.9%) at a nursing home. The median age of the patients was 83.0 years (interquartile range, 76.0-88.0 years), and the proportion of men was 53.1% (124 108 of 233 511). The proportion of favorable neurologic outcomes was 4.5% (1351 of 29 911) in public locations, 1.0% (1555 of 157 087) in residential locations, and 0.6% (301 of 46 513) in nursing homes. Patients with cardiac arrests in public locations had a significantly higher likelihood of achieving a favorable neurologic outcome than those in residential locations (adjusted odds ratio, 1.36; 95% CI, 1.25-1.48), whereas those in nursing home

Matsui S, Kitamura T, Kiyohara K, et al. Sex Disparities in Receipt of Bystander Interventions for Students Who Experienced Cardiac Arrest in Japan. JAMA Netw Open. 2019;2(5):e195111. doi:10.1001/jamanetworkopen.2019.5111, Importance: Bystander interventions are a factor for improving survival of out-of-hospital cardiac arrest (OHCA), but it is hypothesized that girls and women experiencing OHCA may be less likely to receive bystander interventions than boys and men. Objective: To investigate sex disparities in receiving public-access automated external defibrillator (AED) pad application and bystander-initiated cardiopulmonary resuscitation (CPR) among students who experienced OHCA in school settings. Design, Setting, and Participants: This nationwide cohort study used the Stop and Prevent Cardiac Arrest, Injury, and Trauma in Schools (SPIRITS) database to link databases from 2 nationally representative registries-the Injury and Accident Mutual Aid Benefit System of the Japan Sport Council and the All-Japan Utstein Registry of the Fire and Disaster Management Agency. Students from elementary schools (ages 6-12 years), junior high schools (ages 12-15 years), high schools (ages 15-21 years), and technical colleges (ages 15-21 years) who experienced nontraumatic OHCA involving attempted resuscitation by emergency medical service personnel or bystanders in school settings from April 1, 2008, to December 31, 2015, were included. Data analysis was performed from January 5, 2019, to April 11, 2019. Exposures: Sex and school level. Main Outcomes and Measures: Application of public-access AED pads or initiation of CPR by a bystander. Results: A total of 232 students who experienced OHCA with nontraumatic causes in school settings (mean [SD] age, 14.5 [2.9] years; 175 [75.4%] male) were included. In multivariable analysis of the full cohort of students who experienced OHCA, female sex was associated with significantly lower odds of receiving public-access AED pad application compared with male sex (36 of 57 female students [63.2%] received AED pad application vs 141 of 175 male students [80.6%]; adjusted odds ratio [OR], 0.44; 95% CI, 0.20-0.97; P=.04). In the subgroup analysis of students who