Statistical analysis was performed using
R-Project 3.1 for GNU Linux Ubuntu (Vienna, Austria). For categorical variables, percentages were computed. Comparisons of percentages were performed with Fisher's exact test. We performed a multivariate analysis to assess the independent factors of therapeutic and diagnostic impact.
Variables with a significance level at least 0.1 were included in the logistic regression model. The variables were selected by a step-by-step forward-backward model to minimize the Akaike's criterion. The statistical threshold for final significance was 0.05.
Zieleskiewicz L., Muller L., Lakhal K., Meresse Z., Arbelot C., Bertrand P.M., Bouhemad B., Cholley B., Demory D., Duperret S., Duranteau J., Guervilly C., Hammad E., Ichai C., Jaber S., Langeron O., Lefrant J.Y., Mahjoub Y., Maury E., Meaudre E., Michel F., Muller M., Nafati C., Perbet S., Quintard H., Riu B., Vigne C., Chaumoitre K., Antonini F., Allaouchiche B., Martin C., Constantin J.M., De Backer D, & Leone M. (2015). Point-of-care ultrasound in intensive care units: assessment of 1073 procedures in a multicentric, prospective, observational study. Intensive care medicine, 41(9).