An Epidemiological Investigation on Correct Wearing of Mask by Direct Spray Test
- Conditions
- Respiratory Infectious Diseases
- Registration Number
- NCT04497675
- Lead Sponsor
- Fuwai Yunnan Cardiovascular Hospital
- Brief Summary
The purpose of this study was to explore the relationship between the transmission of respiratory diseases and the correct wearing of masks, as well as the factors affecting the correct wearing of masks. The research is beneficial to the prevention of respiratory diseases and moves the barrier of prevention and control forward. It is of great significance to COVID-19 's practical prevention and control.
- Detailed Description
1. Overall design：This study uses the methods of cross-sectional survey and chance sampling.
2. Sign the Informed Consent Form.
3. Investigation on the basic situation of personnel: The gender, age and education level of the subjects were analyzed as the factors influencing whether the mask was worn correctly or not.
4. Investigation on the types of wearing masks： 1) The types of masks worn by the subjects were recorded as the basis of stratified statistics.
2) Mask suitability testing：
1. Visual inspection whether the mask is close to the face with obvious gaps.
2. Breathing test Are there any obvious gaps or whether the cotton around the mask is blown when the subject taking a deep breath.
3. Spray test The FT-30 qualitative fitness test system of 3M company was used to test the suitability and correctness of wearing mask.
In the spray test, all subjects underwent a sensitivity test to prove their ability to smell the bitterness of the reagent, sensitive subjects can participate in the direct spray test.
In order to objectively reflect the overall situation of the subjects, it is necessary to cover many ages and educational levels of men and women.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 6000
- Healthy people with autonomous behavior ability and language expression ability who are older than or equal to 7 years old, Persons under the age of 18 need to obtain the consent of their legal guardians；
- The subjects and / or their legal guardians have the ability to understand the contents of the study and to participate in all the research processes with the subjects；
- People who volunteered to take part in the study；
- There was no respiratory infection in nearly one month.
- People with a history of allergies, including those who are allergic to pollen, dust mites, etc；
- People with any history of drug allergy；
- People who have participated in the experiment are not allowed to participate in this study for the second time;
- Pregnant women；
- The healer after COVID-19 's infection；
- After questioning, it was found that the subjects were the factors that affected the study, such as dysosmia, or those who had decreased olfactory ability due to disease, or facial paralysis, which affected the judgment of the test；
- Those who are participating in clinical trials of other drugs / devices；
- Subjects with poor compliance or unwilling to cooperate with the operation as required；
- The researchers believe that any other situation that may affect the evaluation of the study.
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method can or can't fell bitterness Immediately after spray test Whenever the subject feels bitter, it means that the mask does not fit well with the subject's face.
If the subjects do not feel bitter all the time, it means that the mask is suitable for the subjects' face and can be worn.
- Secondary Outcome Measures
Name Time Method
Trial Locations
- Locations (8)
Luliang Health Bureau
🇨🇳Qujing, Yunnan, China
Fuwai hospital, Beijing
🇨🇳Beijing, Beijing, China
Taizhou Health Bureau
🇨🇳Taizhou, Jiangsu, China
Jiexiu Health Bureau
🇨🇳Jinzhong, Shanxi, China
Yuanqu Health Bureau
🇨🇳Yuncheng, Shanxi, China
Lin Health Duo
🇨🇳Qujing, Yunnan, China
Luoping Health Bureau
🇨🇳Qujing, Yunnan, China
Shizong Health Bureau
🇨🇳Qujing, Yunnan, China