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CompletedNCT04331171COVID CALL 15Updated Apr 8, 2021

Epidemiological Observation From a Smartphone Self-monitoring Application for Suspected COVID-19 Patients' Triage

An observational study in COVID-19, sponsored by Weprom. Completed at 1 site in France. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-04-08.

Sponsored by Weprom · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
12,000,000
Ages
18 Years and older
Sex
All
01

Study summary

A coronavirus pandemic began on 12/31/2020 with the first Chinese patient. As of 3/16/2020, the epidemic affects more than 100 countries with 169,000 official infections and 6,500 deaths. This virus causes a pathology ranging from simple flu symptoms in 80% of cases to acute respiratory distress syndromes requiring resuscitation in 5% of cases and a death rate of 1.4 to 4% of cases.

The arrival in France on 02/25/2020 with an exponential development of the infection (more than 5,000 cases on 03/15/2020) was accompanied by an unprecedented number of calls to the French emergency service call number (15) of worried patients with overload and sometimes saturation of the service that can impact calls and the care of patients really recovering from an emergency.

We previously developed a Moovcare® web application which showed a 7 months survival benefit by early detection of relapsed lung cancer based on the reporting of patient symptoms analyzed by a validated algorithm in 300 patients and 1 trial randomized. Another application for detecting and monitoring chemo-induced febrile aplasia appears to show a reduction in the number of hospitalizations for sepsis. Finally, Smokecheck, a self-assessment application for symptoms by smokers, has shown that it improves the detection of symptomatic operable bronchial cancers (9 to 24%, p = 0.04).

The web application https://www.maladiecoronavirus.fr/ was developed with a group of physicians from the Institut Pasteur, Hospitals group of Paris, Hospitals of Lille and Rennes and the ILC Jean Bernard in Le Mans. It makes it possible to guide symptomatic patients and patients who wishing to know what to do (call their general practitioner, teleconsultation, or call emergency service) based on symptoms and predictive factors of severity.

Following the availability of this new tool, we want to assess the impact of the application on the number and relevance of calls to emergency service.

02

Conditions studied

  • COVID-19

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Keywords

  • M-health
  • COVID-19
  • Self-assessment application
  • epidemiology
  • symptoms
03

In context

COVID-19

7,640 studies on the registry are indexed under COVID-19; 488 are open to participants now.

This study's enrollment of 12,000,000 is above the median of 261 across 3,136 observational studies indexed under COVID-19.

Browse COVID-19 studies →

Lead sponsor

Weprom is the lead sponsor of 21 studies on the registry; 3 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Probability sample

Study population

All users of the https://www.maladiecoronavirus.fr/ application over the age of 18

Inclusion criteria

  • All users of the https://www.maladiecoronavirus.fr/ application over the age of 18

Exclusion criteria

Exclusion Criteria:

  • not applicable
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
12,000,000 participants (actual)
Target follow-up
1 Day
Patient registry
Yes

Groups and cohorts

  • Web-application users

    questionnaire of comorbidity and symptomes completed by the user on his smartphone

    Device: Web application users

Interventions

  • DeviceWeb application users

    questionnaire of comorbidity and symptoms completed by the patient on his smartphone

06

What researchers measure

Primary outcomes

  1. To assess of the evolution of the number of calls to Emergency service within 12 days after the launch of the application https://www.maladiecoronavirus.fr/

    Number of calls to Emergency service after the launch of web application comparded to the days before

    Time frame: 12 days

  2. To assess of the evolution of the proportion of relevant calls to Emergency service within 12 days after the launch of the application https://www.maladiecoronavirus.fr/

    Number of relevants calls to Emergency service after the launch of web application comparded to the days before

    Time frame: 12 days

Secondary outcomes

  1. To assess the evolution over time of the COVID 19 epidemic

    the symptoms collected by the application

    Time frame: 3 months

  2. To assess the evolution over space of the COVID 19 epidemic

    the symptoms collected by the application according to ZIP code

    Time frame: 3 months

  3. To assess symptoms

    Descriptive analysis of symptoms collected by web-application

    Time frame: 3 months

  4. To assess the users population

    Descriptive analysis of data collected by web-application

    Time frame: 3 months

07

Study locations

1 site
  • All French Emergency services
    Le Mans, France
08

References and documents

Publications

  • Denis F, Fontanet A, Le Douarin YM, Le Goff F, Jeanneau S, Lescure FX. A Self-Assessment Web-Based App to Assess Trends of the COVID-19 Pandemic in France: Observational Study. J Med Internet Res. 2021 Mar 12;23(3):e26182. doi: 10.2196/26182. PubMed 33709945 ↗
  • Galmiche S, Rahbe E, Fontanet A, Dinh A, Benezit F, Lescure FX, Denis F. Implementation of a Self-Triage Web Application for Suspected COVID-19 and Its Impact on Emergency Call Centers: Observational Study. J Med Internet Res. 2020 Nov 23;22(11):e22924. doi: 10.2196/22924. PubMed 33147165 ↗
  • Denis F, Galmiche S, Dinh A, Fontanet A, Scherpereel A, Benezit F, Lescure FX. Epidemiological Observations on the Association Between Anosmia and COVID-19 Infection: Analysis of Data From a Self-Assessment Web Application. J Med Internet Res. 2020 Jun 11;22(6):e19855. doi: 10.2196/19855. PubMed 32496206 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 8, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04331171
Lead sponsor
Weprom
Collaborators
Institut Pasteur, Assistance Publique - Hôpitaux de Paris, DOCAPOST, Direction Générale de l'Offre de Soins
Responsible party
Sponsor
First posted
Apr 2, 2020
Start date
Mar 17, 2020
Primary completion
Nov 15, 2020
Completion
Nov 15, 2020
Last update
Apr 8, 2021

Study contacts

Fabrice DENIS, MD
study director · Jean Bernard Center - LE MANS

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 2021. You cannot join it, but the record below documents what was studied.

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