Development of a new Aerosol Barrier Mask for mitigation of spread of SARS-CoV-2 and other infectious pathogens

Karam, Karam Abi; Hota, Piyush; Mora, Sabrina; Lowell, Amelia; McKay, Kelly; Xian, Xiaojun; Patel, B. M.; Forzani, Erica

doi:10.1101/2021.02.11.21251593

2021

DOI: 10.1101/2021.02.11.21251593

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Development of a new Aerosol Barrier Mask for mitigation of spread of SARS-CoV-2 and other infectious pathogens

Karam Abi Karam

Piyush Hota

Sabrina Mora

et al.

Abstract: The COVID-19 pandemic has caused huge impact on public health and significantly changed our lifestyle. This is due to the fast airborne oro-nasal transmission of SARS-CoV-2 from the infected individuals. The generation of liquid aerosolized particles occurs when the COVID-19 patients speak, sing, cough, sneeze, or simply breathe. We have developed a novel aerosol barrier mask (ABM) to mitigate the spread of SARS-CoV-2 and other infectious pathogens. This Aerosol Barrier Mask is designed for preventing SARS-CoV… Show more

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The Effect of Training on Participant Adherence With a Reporting Time Frame for Momentary Subjective Experiences in Ecological Momentary Assessment: Cognitive Interview Study (Preprint)

Wen¹,

Junghaenel²,

Newman³

et al. 2021

Preprint

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BACKGROUND Ecological Momentary Assessment (EMA) has the potential to minimize recall bias by having people report on their experiences in the moment (momentary model) or over short periods of time (coverage model). This potential hinges on the assumption that participants provide ratings based on the reporting timeframe instructions prescribed in the EMA items. However, it is unclear what timeframes participants are actually using when they answer EMA questions and whether participant training improves participants’ adherence to the reporting instructions. OBJECTIVE The objectives of this study are to investigate the reporting timeframes participants used when answering EMA questions and whether participant training improves participants’ adherence to the EMA reporting timeframe instructions. METHODS This study used telephone-based cognitive interviews to investigate this question. In a 2x2 factorial design, participants (n=100) were assigned to receive either basic or enhanced EMA training and also randomized to rate their experiences using a momentary (at the moment you were called) or coverage (since the last phone call) model. Participants received 5 calls over the course of one day to provide ratings; after each rating, participants were immediately interviewed about the timeframe that they used to answer the EMA questions. Two raters independently coded the momentary interview responses into timeframe categories (Cohen’s kappa = 0.64 (95%CI: 0.55-0.73)). RESULTS Results from the momentary conditions showed that most of the calls referred to the period during the call (28.6%) or just before the call (49.2%) to provide ratings; the remainder were from longer reporting periods. Multinomial logistic regression results indicated a significant training effect (χ2 (1, 199)=16.61, p<0.001), where the enhanced training condition yielded more reports within the intended reporting timeframes for momentary EMA reports. Cognitive interview data from the coverage model did not lend themselves to reliable coding and were not analyzed. CONCLUSIONS These findings provide the first evidence about adherence to EMA instructions to reporting periods, and that enhanced participant training improves adherence to the timeframe specified in momentary EMA studies.

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The Effect of Training on Participant Adherence With a Reporting Time Frame for Momentary Subjective Experiences in Ecological Momentary Assessment: Cognitive Interview Study (Preprint)

Wen¹,

Junghaenel²,

Newman³

et al. 2021

Preprint

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show abstract

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Development of a new Aerosol Barrier Mask for mitigation of spread of SARS-CoV-2 and other infectious pathogens

Cited by 1 publication

References 9 publications

The Effect of Training on Participant Adherence With a Reporting Time Frame for Momentary Subjective Experiences in Ecological Momentary Assessment: Cognitive Interview Study (Preprint)

The Effect of Training on Participant Adherence With a Reporting Time Frame for Momentary Subjective Experiences in Ecological Momentary Assessment: Cognitive Interview Study (Preprint)

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