The overall objective of this study is to evaluate the efficacy of a tensioning progress indicator light to achieve proper harness tensioning in child safety seats.
The primary objective of the study is to determine whether a prototype convertible child safety seat with visual indication of successful tensioning technology reduces the amount of harness slack compared with a standard safety seat. The secondary objective of the study is to assess caregivers' perceptions of the quality, design, and ease of use of the prototype child safety seat tensioning progress indicator lights. Participants will be parents/caregivers aged 18 to 75 years of children between 6 and 24 months of age. Approximately 130 caregiver-child dyads will be enrolled. Participants will be asked to harness their child into two versions of a convertible child safety seat, twice in each car seat. The intervention seat will be equipped with the technology that gives visual indication of successful harness tensioning. Participants will be observed, assessed, and asked a series of survey questions after each harnessing period.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
92
The prototype child safety seat is a convertible rear-facing seat with a harness system that includes tension indicator lights.
The control child safety seat is a convertible rear-facing seat without tension indicator lights.
Children's Hospital of Philadelphia Roberts Center for Pediatric Research
Philadelphia, Pennsylvania, United States
Change in harness tension
After each of the four harnessing periods, the tension force on the safety seat harness will be measured with a load cell in Newtons and/or a qualitative "pinch" test which provides a binary value of tight vs not-tight. Within-participant harness tension is compared.
Time frame: Up to 5 minutes
Participant perceptions of usability of the tension progress indicator light technology: survey
Participant perceptions of the usability of the technology will be collected and the control and prototype harnessing systems will be compared. Participants will be asked to complete a post-intervention survey that contains 4 items pertaining to the usability of the technology through Likert scales (range from Very difficult to Very easy). There is no overall score for these survey items.
Time frame: 30 minutes
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