Evidence map›Paper›PMID 40121429›Full record

ArticleBMC public health2025

Noise-induced hearing loss and blood factors: results from a comprehensive cross-sectional study in Iran.

Sayed Vahid Esmaeili, Mahnaz Shakerian, Saied Lotfi, Azim Karimi, Hamideh Ghasemian, Mojtaba Nakheipour, Mahdi Jalali, Sajad Mohebi, Reza Esmaeili

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMC public health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Sayed Vahid EsmaeiliStudent Research Committee, Department of Occupational Health and Safety Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Mahnaz ShakerianDepartment of Occupational Health and Safety Engineering, Faculty of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
Saied LotfiStudent Research Committee, Department of Occupational Health and Safety Engineering, School of Health, Isfahan University of Medical Sciences, Hezar Jerib street, Isfahan, 8174673461, Iran.
Azim KarimiStudent Research Committee, Department of Occupational Health and Safety Engineering, School of Health, Isfahan University of Medical Sciences, Hezar Jerib street, Isfahan, 8174673461, Iran.
Hamideh GhasemianIndustrial Diseases Research Center, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Mojtaba NakheipourStudent Research Committee, Department of Occupational Health and Safety Engineering, School of Health, Isfahan University of Medical Sciences, Hezar Jerib street, Isfahan, 8174673461, Iran.
Mahdi JalaliStudent Research Committee, Department of Occupational Health and Safety Engineering, School of Health, Isfahan University of Medical Sciences, Hezar Jerib street, Isfahan, 8174673461, Iran.
Sajad MohebiStudent Research Committee, Department of Occupational Health and Safety Engineering, School of Health, Isfahan University of Medical Sciences, Hezar Jerib street, Isfahan, 8174673461, Iran.
Reza EsmaeiliStudent Research Committee, Department of Occupational Health and Safety Engineering, School of Health, Isfahan University of Medical Sciences, Hezar Jerib street, Isfahan, 8174673461, Iran. rezaesmaeili794@yahoo.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNoise-induced hearing loss (NIHL) is a common occupational hazard and a leading cause of hearing impairment among industrial workers. Previous studies have primarily focused on the association between physiological parameters and excessive noise exposure (above 85 dB). This study investigates the impact of sound exposure below the permissible limit (between 82 and 85 dB) on blood factors and hearing loss.

methodsThis cross-sectional analytical study examined 8946 male facility technicians from various industries in Iran, who were exposed to sound levels between 82 and 85 decibels (action limit) over a period of one year. The study examined various blood factors, including complete blood cell count (CBC), blood group (BG), fasting blood glucose (FBS), lipid factors such as triglycerides (TG) and cholesterol (Chol), and also blood pressure (BP). Additionally, the hearing status of participants was evaluated using pure tone audiometry for both ears.

resultsThe results indicated that age, work experience, SBP, FBS, Chol, Hb, Plt, and Hct were the main factors influencing hearing loss. FBS showed the highest impact on workers' hearing loss, accounting for 36.70% of the variance. Furthermore, Hb and PLT followed with weights of 19.10% and 12.4%, respectively. However, no significant relationship was observed concerning the blood group type.

conclusionExposure to noise levels below the permissible limit can lead to hearing loss in individuals. Moreover, FBS, Hb, and PLT were identified as blood factors affecting hearing loss in people. Understanding this will provide the basis for future guidelines on how to care for these workers.

Indexed as

Hearing Loss, Noise-InducedNoise, OccupationalOccupational DiseasesOccupational ExposureAdultAudiometry, Pure-ToneCross-Sectional StudiesHumansIranMaleMiddle AgedBlood factorsFacility techniciansHearing lossWorkers

Identifiers

PMID40121429
PMCPMC11929980

What Socratic holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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 Socratic graph.