IMPORTANCE While telehealth use in surgery has shown to be feasible, telehealth became a major modality of health care delivery during the COVID-19 pandemic.OBJECTIVE To assess patterns of telehealth use across surgical specialties before and during the COVID-19 pandemic.

Electronic media offers a novel way to improve asthma care. Email was the most preferred method, though text messaging and social media sites like Facebook may be appropriate for certain patients.

C ommunication is an ancient discipline which has evolved considerably. Throughout this evolutionary process, effectiveness has been a central concern. In the fifth century BC, for instance, Corax, one of the first teachers of human discourse, suggested the need for speakers to &dquo;produce an effect in listeners&dquo; (Hinks, 1940;Kennedy, 1959 (1973) suggests that theory construction in the future should &dquo;focus on a new set of variables and employ a new set of analytic techniques&dquo; (p. 16).

Machine learning has been used successfully to improve the accuracy of computer-aided diagnosis systems. This paper experimentally assesses the performance of models derived by machine learning techniques by using relevant features chosen by various feature-selection methods. Four commonly used heart disease datasets have been evaluated using principal component analysis, Chi squared testing, ReliefF and symmetrical uncertainty to create distinctive feature sets. Then, a variety of classification algorithms have been used to create models that are then compared to seek the optimal features combinations, to improve the correct prediction of heart conditions. We found the benefits of using feature selection vary depending on the machine learning technique used for the heart datasets we consider. However, the best model we created used a combination of Chi-squared feature selection with the BayesNet algorithm and achieved an accuracy of 85.00% on the considered datasets.

This cross-sectional study examines the attributable association of modifiable risk factors for adverse outcomes after hernia repair and increased health care spending associated with these adverse outcomes.