ArticleAJPM focus2022
Improvement in Fitted Filtration Efficiency of N95 Respirators With Escalating Instruction of the Wearer.
Article in AJPM focus, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 7 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it, 7 citations in OpenAlex.
- Pooled it
- Evaluation of the protective efficacy of a user seal check for N95 respirators through quantitative fit testing in an ambulance crew.Scientific reports · 2025Article
- Variation in the fitted filtration efficiency of disposable face masks by sex.Journal of exposure science & environmental epidemiology · 2025Article
- Smoke on the horizon: leveling up citizen and social science to motivate health protective responses during wildfires.Humanities & social sciences communications · 2024Article
- Craniometric determinants of the fitted filtration efficiency of disposable masks.Frontiers in public health · 2024Observational
- A Narrative Review on the Impact of Air Pollution on Heart Failure Risk and Exacerbation.The Canadian journal of cardiology · 2023Review
- Filling Critical Science Gaps: EPA Office of Research and Development's Response to COVID-19.EM plusArticle
Corrections and comments
- Erratum issuedErrata.2023
Authors and funding
7 authors at 2 institutions in 1 country.
Funding
Abstract
Introduction: Fitted filtration performance of an N95 respirator may benefit from differing levels of instructions. Methods: Using a modified Occupational Safety and Health Administration fit test protocol, we measured fitted filtration efficiency for an N95 respirator in 21 screened, healthy participants given 4 levels of escalating instruction: (1) uninstructed (baseline), (2) written/pictorial manufacturer instructions, (3) step-by-step video demonstration, and (4) staff instruction (visual inspection of respirator fit and verbal suggestions to adjust when applicable). Results: Baseline fitted filtration efficiency was not significantly different between participants with or without previous experience of N95 use. Clear improvements in fitted filtration efficiency were observed progressing from baseline (average=86.1%) to manufacturer paper instructions (93.3%), video instructions (97.5%), and post staff intervention (98.3%). Baseline fitted filtration efficiency values were significantly lower than those after video instruction (p<0.037) and staff intervention (p<0.033) sessions. Conclusions: Beyond uninstructed wear or provision of manufacturer instructions, efforts to train and instruct users in proper respirator fit principles with visual feedback are likely to yield benefits to public health outcomes in reducing respiratory exposure during air quality emergencies such as airborne viral outbreaks and wildland fires.
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.