DRIIVE (Data and Research on Interventions to Improve the Vehicular Environment)

Not Applicable

Completed

• Conditions: Vehicular Environment
• Interventions: Device: HEPA air purifier; Behavioral: questionnaires; Other: Log-book; Other: Urine sample

• Registration Number: NCT02381626
• Lead Sponsor: Memorial Sloan Kettering Cancer Center

Brief Summary

The purpose of this study is to look at air quality in cabs and see if the air quality inside taxi cabs is connected to increased risks for lung and heart health problems. Another purpose of the study is to see if putting an air filter inside the car may help improve the air quality and lower health risks.

This is important because air pollution can be harmful to health. Air pollution is made up of very tiny particles (things) floating in the air around us, called particulate matter. Particulate matter is made up of dust, smoke, dirt, and gas fumes and can get into our bodies as we breathe. It has been linked to risk for lung cancer and heart disease. It is important because taxi drivers spend many hours of their day inside their cars.

The investigators hope that this study will help them find out if using air filters inside cabs will help lower the levels of pollution in cabs and reduce its effects on the health of taxi drivers. They will use these results to educate the taxi driver community.

Detailed Description

DRIIVE (Data and Research on Interventions to Improve the Vehicular Environment) is a community-engaged translational pilot project that will utilize a three parallel arm design to obtain preliminary data on associations between Particulate Matter (PM)/air pollution and physiologic measurements and biomarkers in taxi drivers, and to determine the impact of a HEPA filter (to remove PM and volatile organic compounds) intervention on such physiologic measurements and biomarkers. DRIIVE is funded by the New York State Department of Health Empire Clinical Research Investigator Program (ECRIP), which trains physicians in clinical research in New York. Drivers will be randomized to one of two groups: Intervention or Wait-list Control. In total, two groups of 14 participants in each group will be recruited: 1) Wait List Control group, who will receive a HEPA filter at the end of the 1 month participation period, and 2) Intervention group, who will receive a HEPA filter two weeks into their participation period. The project will be completed within a 2 year timeframe.

Study Timeline

• Study Start: 2014-12
• Study First Submitted: 2015-02-24
• Study First Submitted QC: 2015-03-05
• Study First Posted: 2015-03-06
• Primary Completion: 2020-10-18
• Study Completion: 2020-10-18
• Status Verified: 2021-02
• Results First Submitted: 2021-09-08
• Results First Submitted QC: 2021-09-08
• Last Update Submitted: 2021-09-08
• Results First Posted: 2021-10-05
• Last Update Posted: 2021-10-05

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Male
• Target Recruitment: 39

Inclusion Criteria

Drivers:

• Full-time New York City cab drivers;
• Non Smokers (assessed by modified BRFSS smoking question within screening tool) ;
• Male;
• Between the ages of 21 and 90;
• No immediate plans (within the next 3 months) to leave the City for vacation or for trips back to their home country
• Driver for at least 3 years*;
• Driving schedule does not include overnight shifts, nor does driver have an additional job overnight;
• Own a smart phone (in order to collect heart rate variability data)
• Should self-report at least "Very well" level of English fluency (according to the standard US census question)
• Have working cigarette lighter receptacle/socket inside taxi cab *The requirement to have worked at least 3 years in the U.S. should minimize any acute health effects/disease due to high levels of contaminants associated with country of origin

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Exclusion Criteria

Drivers:

• Smoker or uses smokeless tobacco products;
• Resides in a smoking household (where 1 or more household members smoke);
• Has a sleep disorder (including insomnia, delayed sleep phase syndrome (DSPS), narcolepsy, night terror, sleep apnea, sleep walking);
• Has a current or previous diagnosis of any type of cancer;
• Has a diagnosis of an inflammatory, autoimmune, or chronic infectious disease (including rheumatoid arthritis, lupus, chronic liver disease, multiple sclerosis, fibromyalgia, inflammatory bowel disease, psoriasis, HIV);
• Has a serious cardiopulmonary medical condition (including cardiovascular disease, congestive heart failure (CHF), chronic obstructive pulmonary disease (COPD), restrictive lung disease, interstitial lung disease, asthma, acute or chronic bronchitis, cystic fibrosis, pneumonia, tuberculosis, pneumoconiosis, pulmonary hypertension, pulmonary embolism, pleural effusion, pneumothorax, obesity hypoventilation syndrome, neuromuscular lung disease).
• Self reports -well‖ level of English fluency and indicates a preference for an interpreter.

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Wait-list Control Group	HEPA air purifier	During the first 2 weeks, measurements (e.g. biological markers and air monitoring) will be taken under usual conditions. The Wait-list Control Group drivers will not receive a HEPA air purifier at this time, but will also have the air monitoring and biological parameters repeated for another 2 weeks. At the end of the 1 month period of measurements for both groups of drivers, the Wait-list drivers will then receive a HEPA air purifier, so that they may also potentially benefit from the intervention being tested in this study, but no further measurements will be taken.
Intervention Group	questionnaires	During the first 2 weeks, measurements (e.g. biological markers and air monitoring) will be taken under usual conditions. At the end of the initial two weeks, portable HEPA air purifiers (136) will be placed in the Intervention Group drivers' cars and the air monitoring and biological parameters will be repeated for another 2-week period, to determine changes in PM levels and physiological measurements as a result of this targeted intervention.
Intervention Group	Log-book	During the first 2 weeks, measurements (e.g. biological markers and air monitoring) will be taken under usual conditions. At the end of the initial two weeks, portable HEPA air purifiers (136) will be placed in the Intervention Group drivers' cars and the air monitoring and biological parameters will be repeated for another 2-week period, to determine changes in PM levels and physiological measurements as a result of this targeted intervention.
Wait-list Control Group	Urine sample	During the first 2 weeks, measurements (e.g. biological markers and air monitoring) will be taken under usual conditions. The Wait-list Control Group drivers will not receive a HEPA air purifier at this time, but will also have the air monitoring and biological parameters repeated for another 2 weeks. At the end of the 1 month period of measurements for both groups of drivers, the Wait-list drivers will then receive a HEPA air purifier, so that they may also potentially benefit from the intervention being tested in this study, but no further measurements will be taken.
Intervention Group	HEPA air purifier	During the first 2 weeks, measurements (e.g. biological markers and air monitoring) will be taken under usual conditions. At the end of the initial two weeks, portable HEPA air purifiers (136) will be placed in the Intervention Group drivers' cars and the air monitoring and biological parameters will be repeated for another 2-week period, to determine changes in PM levels and physiological measurements as a result of this targeted intervention.
Wait-list Control Group	Log-book	During the first 2 weeks, measurements (e.g. biological markers and air monitoring) will be taken under usual conditions. The Wait-list Control Group drivers will not receive a HEPA air purifier at this time, but will also have the air monitoring and biological parameters repeated for another 2 weeks. At the end of the 1 month period of measurements for both groups of drivers, the Wait-list drivers will then receive a HEPA air purifier, so that they may also potentially benefit from the intervention being tested in this study, but no further measurements will be taken.
Intervention Group	Urine sample	During the first 2 weeks, measurements (e.g. biological markers and air monitoring) will be taken under usual conditions. At the end of the initial two weeks, portable HEPA air purifiers (136) will be placed in the Intervention Group drivers' cars and the air monitoring and biological parameters will be repeated for another 2-week period, to determine changes in PM levels and physiological measurements as a result of this targeted intervention.
Wait-list Control Group	questionnaires	During the first 2 weeks, measurements (e.g. biological markers and air monitoring) will be taken under usual conditions. The Wait-list Control Group drivers will not receive a HEPA air purifier at this time, but will also have the air monitoring and biological parameters repeated for another 2 weeks. At the end of the 1 month period of measurements for both groups of drivers, the Wait-list drivers will then receive a HEPA air purifier, so that they may also potentially benefit from the intervention being tested in this study, but no further measurements will be taken.

Primary Outcome Measures

Name	Time	Method
Collect Preliminary Data on In-vehicle Excess Particulate Matter (PM) Exposure	2 years	monitor/report the PM levels as time-averaged sample (hourly averages) that will be monitored at work site and at homes across all groups

Trial Locations

Locations (1)

Memorial Sloan Kettering Cancer Center; 🇺🇸 New York, New York, United States