This study aims to assess the usability of a load leg design for caregivers who must install the child safety seat into a vehicle. The specific aims are to quantify any errors committed by the participants while installing the car seat and to assess participants' opinions on the car seat's load leg design.
A descriptive study will be conducted to determine whether human subjects are able to install the new feature of the prototype car seat correctly. Participants will be presented with the prototype car seat and a set of basic written instructions and labels to guide their installations. The percentage of participants who use the new feature and use it correctly will be reported. Any installation errors on other parts of the child seat (seat belt, lower anchors, top tether) will also be reported.
Study Type
OBSERVATIONAL
Enrollment
50
The primary objective is to assess the usability of the load leg design for caregivers who must install the child safety seat into a vehicle. The specific aims are to quantify any errors committed by the participants while installing the car seat (especially related to the use of the load leg) and to assess participants' opinions on the car seat's load leg design.
The Ohio State University
Columbus, Ohio, United States
Overall Correct Use of Load Leg
Number of participants who correctly install the load leg independently, without needing any prompt to use it.
Time frame: 1 study visit, an average of 30 minutes
Attempt to Use Load Leg Without Prompting
Number of participants who noticed the load leg on their own, unfolded it from storage, and attempted to use it without being prompted by the researcher.
Time frame: 1 study visit, an average of 30 minutes
Correct Load Leg Length
Number of participants who set the load leg to the correct length, including those who needed prompted to use it
Time frame: 1 study visit, an average of 30 minutes
Correct Load Leg Angle
Number of participants who set the load leg to the correct angle, including those who needed prompted to use it.
Time frame: 1 study visit, an average of 30 minutes
Correct Understanding of Load Leg's Purpose
The number of participants who correctly understood the purpose of the load leg by using words such as "security, safety, stability," etc. in their survey responses.
Time frame: 1 study visit, an average of 30 minutes
Participants Who Like Having the Load Leg
Number of participants who overall reported that they would like having the load leg feature on a child seat.
Time frame: 1 study visit, an average of 30 minutes
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