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CompletedNCT05552027Updated Sep 19, 2024Results posted

Minnesota HealthSolutions Cellular Car Seat Study

A Phase 2 interventional study of CCS System- Prototype and CCS System- Control in Child Safety Seat Harness Tension, sponsored by Minnesota HealthSolutions. Completed at 1 site in United States. Open to participants aged 18 Years to 75 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-09-19.

Sponsored by Minnesota HealthSolutions · Phase 2, Interventional, and Other

Phase
Phase 2
Study type
Interventional
Enrollment
92
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Study summary

The objective of the study is to evaluate an innovative child safety seat user engagement system (CCS system) designed to actively educate, instruct, and alarm caregivers with information associated with automatically-sensed safety seat misuses/errors via a smartphone application.

Read the detailed description

The primary objective of the study is to evaluate whether child safety seat users correct more critical misuse errors in child safety seat usage with the seat with the CCS system than the same seat with no sensor system. The CCS system will provide ongoing, tailored support to users at the time of an error. Videos will be available to users via a smartphone and provide short "how to" instructions that demonstrate how to correctly perform each safety seat behavior (e.g., tighten harness straps) and how to avoid common mistakes. The overall goal of the CCS system is to prevent child safety seat critical misuses and reduce deaths and injuries in children riding in motor vehicles. In the proposed study, adult participants will be asked to attend one in-person study visit and complete three (3) scenarios in which they will be asked to identify and correct errors in child safety seat use. Participants will be randomized to either the intervention group which will use the CCS system during each scenario or the control group which will not use the CCS system during each scenario.

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Conditions studied

  • Child Safety Seat Harness Tension
03

In context

Lead sponsor

Minnesota HealthSolutions is the lead sponsor of 10 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Males or Females ages 18-75 years
  • Has harnessed/fastened a child into a car seat in the last five (5) years
  • Has a valid driver's license

Exclusion criteria

Exclusion Criteria:

  • Non-fluency in written and/or spoken English
  • Participant cannot install a safety seat due to a physical or health limitation
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Study design

Phase
Phase 2
Primary purpose
Other
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
92 participants (actual)

Study arms

  • Experimental
    Intervention

    Participants will harness the car seat in 3 separate scenarios with the sensor system enabled to provide feedback.

    Device: CCS System- Prototype

  • Other
    Control

    Participants will harness the car seat in 3 separate scenarios with the sensor system disabled in order to not provide feedback.

    Device: CCS System- Control

Interventions

  • DeviceCCS System- Prototype

    Participants will be exposed to each of the 3 scenarios with the sensor system enabled (with feedback)

  • DeviceCCS System- Control

    The participants will be exposed to each of the 3 scenarios with the system disabled (no feedback).

06

What researchers measure

Primary outcomes

  1. Number of Participants With Installation Errors

    For each misuse scenario participants will be asked to correct the error in the seat installation or the harness tension. Convertible seats will be used for this phase. For each scenario, we will use a huggable images test doll (age and weight of the doll will be indicated to participants). Study team will record seat direction (forward vs rear facing), harness tension (newtons), insecure attachment of the seat to the vehicle (yes/no).

    Time frame: Once during the only study visit: up to 30 mins

07

Results

Posted Sep 19, 2024

Participant flow

Participant flow — Overall Study
MilestoneInterventionControl
Started4646
Completed4646
Not completed00

Outcome measures

PrimaryNumber of Participants With Installation Errors

For each misuse scenario participants will be asked to correct the error in the seat installation or the harness tension. Convertible seats will be used for this phase. For each scenario, we will use a huggable images test doll (age and weight of the doll will be indicated to participants). Study team will record seat direction (forward vs rear facing), harness tension (newtons), insecure attachment of the seat to the vehicle (yes/no).

Time frame:
Once during the only study visit: up to 30 mins
Reported as:
Count of participants · Participants
Number of Participants With Installation Errors
ParticipantsIntervention - Scenario AControl - Scenario AIntervention - Scenario BControl - Scenario BIntervention - Scenario CControl - Scenario C
Number of Participants With Installation Errors214117321833
Statistical analysis
  • Intervention - Scenario A vs Control - Scenario A · Chi-squared · p = <.001 (At the completion of scenario A (a full child safety seat installation), the participants using the CCS app had significantly fewer errors present compared to the control group.)
  • Intervention - Scenario B vs Control - Scenario B · Chi-squared · p = <.01 (At the end of scenario B (loose harness straps), participants using the CCS app had significantly fewer errors present compared to the control group.)
  • Intervention - Scenario C vs Control - Scenario C · Chi-squared · p = <.01 (At the end of scenario C (loose attachment at the base), like the other two scenarios, participants using the CCS app had significantly fewer errors present compared to the control group.)

Adverse events

Collected over 1 week. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Intervention0/46 (0%)0/46 (0%)0/46 (0%)
Control0/46 (0%)0/46 (0%)0/46 (0%)

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)InterventionControlTotal
<=18 years000
Between 18 and 65 years464692
>=65 years000
Age, Continuous
Age, Continuous(years)InterventionControlTotal
Median37 (31 to 59)36 (24 to 44)36 (24 to 59)
Sex: Female, Male
Sex: Female, Male(Participants)InterventionControlTotal
Female383977
Male8715
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)InterventionControlTotal
Hispanic or Latino246
Not Hispanic or Latino444185
Unknown or Not Reported011
Race (NIH/OMB)
Race (NIH/OMB)(Participants)InterventionControlTotal
American Indian or Alaska Native000
Asian246
Native Hawaiian or Other Pacific Islander000
Black or African American81119
White332356
More than one race134
Unknown or Not Reported257
Region of Enrollment
Region of Enrollment(participants)InterventionControlTotal
United States464692
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Study locations

1 site
  • Children's Hospital of Philadelphia
    Philadelphia, Pennsylvania 19104, United States
09

References and documents

Publications

  • Centers for Disease Control and Prevention. Ten leading causes of unintentional injury deaths, United States, 2016, all races, both sexes. https://webappa.cdc.gov/cgi-bin/broker.exe. Published 2016.
  • Centers for Disease Control and Prevention. Fatal Injury Data. https://www.cdc.gov/injury/wisqars/fatal.html. Accessed January 5, 2019.
  • National Highway Traffic Safety Administration. Traffic Safety Facts 2008 Data: Young Drivers. Vol 2010. Washington, DC: US Department of Transportation; 2008. doi:DOT HS 811 169
  • National SAFE KIDS Campaign and NHTSA Child Passenger Safety Technician Program Participant Manual. :C-4.
  • Li HR, Pickrell TM, KC S. The 2015 National Survey of the Use of Booster Seats. Washington, DC; 2016. www.ntis.gov.
  • Greenwell NK. Results of the National Child Restraint Use Special Study. Washington, DC; 2015. www.ntis.gov.
  • Durbin DR, Elliott MR, Winston FK. Belt-positioning booster seats and reduction in risk of injury among children in vehicle crashes. JAMA. 2003 Jun 4;289(21):2835-40. doi: 10.1001/jama.289.21.2835. PubMed 12783914 ↗
  • Arbogast KB, Durbin DR, Cornejo RA, Kallan MJ, Winston FK. An evaluation of the effectiveness of forward facing child restraint systems. Accid Anal Prev. 2004 Jul;36(4):585-9. doi: 10.1016/S0001-4575(03)00065-4. PubMed 15094411 ↗
  • Brown J, Bilston L, McCaskill M. Injury implications of inappropriate use of adult seatbelt systems for children aged 2-8. Australas Road Res Polic Educ Conf. 2003;7(2):81-87.
  • Brown J, McCaskill ME, Henderson M, Bilston LE. Serious injury is associated with suboptimal restraint use in child motor vehicle occupants. J Paediatr Child Health. 2006 Jun;42(6):345-9. doi: 10.1111/j.1440-1754.2006.00870.x. PubMed 16737475 ↗
  • Lutz N, Arbogast KB, Cornejo RA, Winston FK, Durbin DR, Nance ML. Suboptimal restraint affects the pattern of abdominal injuries in children involved in motor vehicle crashes. J Pediatr Surg. 2003 Jun;38(6):919-23. doi: 10.1016/s0022-3468(03)00124-6. PubMed 12778394 ↗
  • Valent F, McGwin G Jr, Hardin W, Johnston C, Rue LW 3rd. Restraint use and injury patterns among children involved in motor vehicle collisions. J Trauma. 2002 Apr;52(4):745-51. doi: 10.1097/00005373-200204000-00023. PubMed 11956394 ↗
  • Weinstein EB, Sweeney MM, Garber M, Eastwood MD, Osterman JG, Roberts JV. The Effect of Size Appropriate and Proper Restraint Use on Injury Severity of Children. In: 2nd Child Occupant Protection Symposium. Society of Automotive Engineers (SAE); 1997:181-186.
  • Winston FK, Durbin DR, Kallan MJ, Moll EK. The danger of premature graduation to seat belts for young children. Pediatrics. 2000 Jun;105(6):1179-83. doi: 10.1542/peds.105.6.1179. PubMed 10835054 ↗
  • Decina LE, Lococo KH. Misuse of child restraints. 2004. http://icsw.nhtsa.gov/people/injury/research/misuse/images/misusescreen.pdf.
  • Klinich KD, Manary MA, Flannagan CAC, et al. Labels, Instructions, and Features of Convertible Child Restraint Systems (CRS): Evaluating Their Effects on CRS Installation Errors. Washington, DC; 2010.
  • Wegner MV, Girasek DC. How readable are child safety seat installation instructions? Pediatrics. 2003 Mar;111(3):588-91. doi: 10.1542/peds.111.3.588. PubMed 12612241 ↗
  • Doak CC, Doak LG, Root JH. Teaching Patients with Low Literacy Skills. 2nd ed. Philadelphia: JB Lippincott Co.; 1996.
  • Participants Central. Prevent child heatsroke in cars. http://www.safercar.gov/participants/InandAroundtheCar/heatstroke.htm. Accessed December 7, 2016.
  • Singh S, Stern S, Subramanian R. Not-in-Traffic Surveillance: Non-Crash Fatalities and Injuries.; 2015.
  • Rudd R, Prasad A, Weston D, Wietholter K. Functional Assessment of Unattended Child Reminder Systems. Washington, DC; 2015.
  • Null J. Heatsroke deaths of children in vehicles. https://noheatstroke.org/index.htm. Accessed January 5, 2019.

Study documents

  • Study protocol · Jul 20, 2020
  • Informed consent form · Jun 6, 2022

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: Yes — Data and study documents will be shared with Minnesota HealthSolutions (the sponsor). No identifiable data will be used for future study without first obtaining Institutional Review Board (IRB) approval. The investigator will obtain a data use agreement between the provider (the PI) of the data and any recipient researchers (including others at CHOP) before sharing a limited dataset (PHI limited to dates and zip codes).

Supporting information: Study protocol, Sap, Icf, Csr, Analytic code

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 19, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT05552027
Lead sponsor
Minnesota HealthSolutions
Collaborators
Children's Hospital of Philadelphia, University of Alabama at Birmingham
Responsible party
Sara Seifert (MPH, Minnesota HealthSolutions) — Principal investigator
First posted
Sep 23, 2022
Start date
Jun 15, 2022
Primary completion
Nov 17, 2022
Completion
Nov 17, 2022
Results posted
Sep 19, 2024
Last update
Sep 19, 2024

Study contacts

Sara Seifert, MPH
principal investigator · Minnesota HealthSolutions

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Apr 2024. You cannot join it, but the record below documents what was studied.

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