Equations to establish a regression between current units with respect to patient`s age and the use time of cochlear implants.

Objective Propose a system of multivariate multiple regression equations in order to establish a mathematical association that allows estimating the current units needed during the adjustment phase with respect to age and time that were used the implants. Method Descriptive cross-sectional study. A total of 41 pediatric patients with a unilateral cochlear implant participated. Three groups were formed and multivariable multiple regression equations were constructed. Results For Group 1, in electrode Groups 3 and 4, there is a lower standard deviation and a similar index of asymmetry of the current units; in Group 2, the groups of electrodes with similar index of asymmetry were 2 and 4, while group of electrodes 3 presented average of 21.54 and dispersion smaller (16.25); in Group 3, groups of electrodes 3 and 4 presented similar standard deviation and average and smaller standard deviation. With respect to the standard estimation error, the lowest variability of current units was obtained in Group 2 for electrode Group 3. Conclusion The proposed equations could be used in the clinical area by knowing the units current needed with respect to age and time of use the implant.