Yeon-Jun Choi, So Young Shin, Julak Lee
Change in Factors Affecting Cyberbullying of Korean Elementary School Students during the COVID-19 Pandemic
International journal of environmental research and public health
preweaning animals exit flock death induced various reasons causing significant economic losses goat producers study investigated survival birth weaning sirohi goat kids within framework survival analysis kid records accessed 1997 2017 information 4417 preweaning animals farmed sirohi goat native rajasthan state india multivariable cox regression fitted data checking assumptions regression explanatory variables sex type birth season birth birthweight doe weight kidding year birth model selection eliminated doe weight model sex type birth season birth birthweight year birth retained model model calibration also five covariates retained model mortality first day birth 03 constituting 35 preweaning mortality mortality end weaning period 78 regression analysis revealed higher birthweight kidding associated reduced hazard death among kids male kids higher hazards death compared female kids singleborn kids lower risks death compared twinborn kids accounting heterogeneity winter season high adverse effect survival kids passing year risks death decreased results study indicate better survival kids achieved controlling environmental animalrelated factors