Personal Audio System: Hearing Symptoms, Habits, and Sound Pressure Levels Measured in Real Ear and a Manikin

Purpose The aims of this study were to characterize hearing symptoms, habits, and sound pressure levels (SPLs) of personal audio system (PAS) used by young adults; estimate the risk of developing hearing loss and assess whether instructions given to users led to behavioral changes; and propose recommendations for PAS users. Method A cross-sectional study was performed in 50 subjects with normal hearing. Procedures included questionnaire and measurement of PAS SPLs (real ear and manikin) through the users' own headphones and devices while they listened to four songs. After 1 year, 30 subjects answered questions about their usage habits. For the statistical analysis, one-way analysis of variance, Tukey's post hoc test, Lin and Spearman coefficients, the chi-square test, and logistic regression were used. Results Most subjects listened to music every day, usually in noisy environments. Sixty percent of the subjects reported hearing symptoms after using a PAS. Substantial variability in the equivalent music listening level (Leq) was noted ( M = 84.7 dBA; min = 65.1 dBA, max = 97.5 dBA). A significant difference was found only in the 4-kHz band when comparing the real-ear and manikin techniques. Based on the Leq, 38% of the individuals exceeded the maximum daily time allowance. Comparison of the subjects according to the maximum allowed daily exposure time revealed a higher number of hearing complaints from people with greater exposure. After 1 year, 43% of the subjects reduced their usage time, and 70% reduced the volume. A volume not exceeding 80% was recommended, and at this volume, the maximum usage time should be 160 min. Conclusions The habit of listening to music at high intensities on a daily basis seems to cause hearing symptoms, even in individuals with normal hearing. The real-ear and manikin techniques produced similar results. Providing instructions on this topic combined with measuring PAS SPLs may be an appropriate strategy for raising the awareness of people who are at risk. Supplemental Material https://doi.org/10.23641/asha.12431435

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Attitude towards online classes among school and college going students during lockdown due to COVID-19 pandemic

International Journal of Community Medicine and Public Health ◽

10.18203/2394-6040.ijcmph20212600 ◽

2021 ◽

Vol 8 (7) ◽

pp. 3446

Author(s):

Saurav Kumar ◽

Shiv Prakash ◽

Mona Srivastava

Keyword(s):

Family Income ◽

Cross Sectional Study ◽

Categorical Variables ◽

Online Classes ◽

Online Questionnaire ◽

Chi Square ◽

Cross Sectional ◽

Academic Level ◽

College Going ◽

Significant Difference

Background: The aim of the study was to assess the attitude of the school and college-going students towards online classes. Methods: An online cross-sectional study was conducted on 228 school and college-going students fulfilling inclusion and exclusion criteria selected through purposive sampling methods. A semi-structured online questionnaire consisting of a socio-demographic questionnaire and Attitude towards online classes (ATOC) questionnaire was prepared by the researcher using Google form. The link of the questionnaire was sent to all the selected respondents through WhatsApp messages and emails. The data was analyzed using the IBM SPSS version 20 software. The reliability of the attitude questionnaire was assessed using Cronbach’s alpha test. The association between categorical variables was assessed using Chi-square tests. The comparison between variables was assessed using the students independent t-test.Results: More than half of the respondents (51.32%) were found with a positive attitude towards online classes. There was a significant association found between attitude towards online classes and socio-demographic variables such as age (p<0.05), academic level (p<0.05), and family income (p<0.01). The respondents who attended online classes (p<0.05), have technical knowledge (p<0.01), and got supported by their parents in the study (p<0.05) were found significantly high positive attitudes towards online classes. There was a significant difference found in the attitude of the respondents who faced psychological disturbances such as a decline in attention-concentration (p<0.05), irritation-anger (p<0.01), and tension (p<0.05) due to online classes.Conclusions: Although, online classes are more beneficial for the students and teachers in their academic activities during the lockdown period due to the COVID-19 pandemic but it can’t take place of traditional face-to-face classes.

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Is there an association between skeletal asymmetry and tooth absence?

Dental Press Journal of Orthodontics ◽

10.1590/2177-6709.21.4.073-079.oar ◽

2016 ◽

Vol 21 (4) ◽

pp. 73-79 ◽

Cited By ~ 3

Author(s):

Guilherme Thiesen ◽

Bruno Frazão Gribel ◽

Keila Cristina Rausch Pereira ◽

Maria Perpetua Mota Freitas

Keyword(s):

Cross Sectional Study ◽

Midsagittal Plane ◽

Chi Square ◽

Cross Sectional ◽

Posterior Teeth ◽

Significance Level ◽

Posterior Tooth ◽

Mandibular Asymmetry ◽

Significant Difference ◽

Skeletal Asymmetry

ABSTRACT Introduction: Facial skeletal asymmetry is commonly found in humans and its main characteristic is menton deviation. The literature suggests that occlusal and masticatory problems arising from tooth absence could be related to the development of such asymmetries. Objective: The aim of this cross-sectional study was to estimate the prevalence of mandibular skeletal asymmetries and to investigate its association with posterior tooth absences. Methods: Tomographic images of 952 individuals aged from 18 to 75 years old were used. Asymmetry was the analyzed outcome, and it was categorized into three groups according to gnathion displacement in relation to the midsagittal plane (relative symmetry, moderate asymmetry, and severe asymmetry). Patients were sorted by the presence of all posterior teeth, unilateral posterior tooth absence, or bilateral posterior tooth absence. Chi-square test with a significance level of 5% was used to verify the association between posterior tooth absence and asymmetry. Results: Results show relative symmetry present in 55.3% of the sample, as well as the prevalence of 27.3% for moderate mandibular asymmetry and 17.4% for severe asymmetry. Moderate and severe mandibular asymmetries occurred in a higher proportion in patients with unilateral posterior tooth absence. However, there was no statistically significant difference between the analyzed groups (p = 0.691). Conclusions: In this study, mandibular asymmetries did not present any association with the absence of teeth on the posterior area of the arch.

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Denver Developmental Screening Test in two-year old infants delivered by vacuum extraction

Paediatrica Indonesiana ◽

10.14238/pi41.1.2001.27-32 ◽

2017 ◽

Vol 41 (1) ◽

pp. 27

Author(s):

Meriah Sembiring ◽

Iskandar Iskandar ◽

Amir Syarifuddin ◽

Bistok Saing

Keyword(s):

Physical Examination ◽

Screening Test ◽

Cross Sectional Study ◽

Developmental Screening ◽

Vacuum Extraction ◽

Sectional Study ◽

Chi Square ◽

Cross Sectional ◽

Developmental Retardation ◽

Significant Difference

The aim of this study was to determine the developmental retardation of infants of two years of age who were delivered by vacuum extraction. This cross-sectional study examined 44 infants delivered by vacuum extraction, comprising 25 males and 19 females who were born in Tembakau Deli and St. Elizabeth Hospitals, between August 1993 until February 1994. The examination included interview and physical examination in the patient's house. Chi-square statistics analysis was used with a significant level of 95% (1'=0.05). The results showed Ihat of the 44 infants delivered by vacuum extraction. 28 (32%) had had were found with mild asphyxia, while 2 infants (5%). whose mothers work as private clerk and entrepreneur, had development retardation. We concluded that there was no significant difference in development between infants delivered by vacuum extraction and those who were born spontaneously. Developmental retardation was found in infants whose mothers lack time to communicate.

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The influence of varying maxillary central incisor vertical dimension on perceived smile aesthetics

Journal of Orthodontics ◽

10.1177/1465312519839713 ◽

2019 ◽

Vol 46 (2) ◽

pp. 137-142

Author(s):

Elis Janaina Lira dos Santos ◽

Alana Moura Xavier Dantas ◽

Raíssa Marçal Vilela ◽

Karina Jerônimo Rodrigues Santiago de Lima ◽

Rejane Targino Soares Beltrão

Keyword(s):

Age Groups ◽

Educational Background ◽

Cross Sectional Study ◽

Central Incisor ◽

Chi Square ◽

Cross Sectional ◽

Exact Test ◽

Maxillary Central Incisor ◽

Significant Difference ◽

Chi Square Test

Objective: To evaluate patient perception of the smile focused on analysis of the upper incisors. Design: Cross-sectional study. Setting: Department of Clinical and Social Dentistry at Federal University of Paraíba, João Pessoa, Brazil. Participants: The sample consisted of 135 individuals (73 women and 62 men). Methods: Images with different characteristics associated with the incisal edges were shown at random and analysed using a Likert scale. Data were analysed using the Chi-square test or Fisher’s exact test with a statistically significant difference ( P < 0.05). Results: Smile I (difference of 1.5 mm in relation to the central incisor and lateral) was considered the most aesthetic, while Smile III (no difference in height between the central and lateral incisors) was the least aesthetic. A significant difference was found between perception of smile II (difference of 1 mm in relation to the central incisor and lateral) and age groups ( P < 0.005), with 31% (n = 13) of individuals aged 45–64 years considering smile II as not pleasant, 4.4% (n = 2) aged 15–24 years and 8.3% (n=4) aged 25–44 years and 4.4% (n = 2) aged 15–24 years considering the same. A significant difference was also found in relation to educational background of the assessor and smile perception, with smile III ( P = 0.0441) and smile IV ( P = 0.0053) considered the most aesthetic ( P = 0.0116). Conclusion: The smile considered most attractive among the sample was that with 1.5 mm steepness between the central and lateral incisors, while a flat smile arc was considered least attractive.

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Oral Hygiene Practice And Perceived Oral Malodour Among Dental And Medical Undergraduate Students Of Bahria University Medical And Dental College

Journal of Bahria University Medical and Dental College ◽

10.51985/jbumdc2018057 ◽

2018 ◽

Vol 08 (04) ◽

pp. 221-225

Author(s):

Beenish Fatima Alam ◽

Hira Raza ◽

Shizma junejo ◽

Marium Azfar ◽

Tuba Saleem ◽

...

Keyword(s):

Medical Students ◽

Undergraduate Students ◽

Oral Hygiene ◽

Cross Sectional Study ◽

Dental Students ◽

Chi Square ◽

Cross Sectional ◽

Medical Undergraduate ◽

Significant Difference ◽

Medical Undergraduate Students

Objective: To determine the differences of self-perception of halitosis and oral hygiene practices among the medical and dental undergraduate students. Methodology: A cross-sectional study conducted over duration of 9 months amongst the medical and dental undergraduate students of Bahria University Medical and Dental College. The questionnaires were distributed to 298 students. Questionnaire employed for this study was adopted and modified from the study conducted by Khalid Almas et al. Descriptive statistics were checked by means of percentages and frequency for all variables. Chi-square test was applied to check significant difference among the responses given by the medical and dental undergraduate students. Results: The response rate for the survey was about 85%. 55% of dental and 17 % of medical students were able to smell their breath. About having examination by dentist about 73% of medical students agreed as compared to 53% of dental students. Both medical and dental students preferred having examination done by the dentist. For management of halitosis, dentist was preferred by 62% of the dental students, while 97% of the medical students did not agree. 62% of the dental students preferred using traditional medications, while 82% of the medical students preferred using self-medications for treatment. Conclusion: The results suggest that there is not a high level of agreement among dental and medical students concerning the detection and management of halitosis. Although large percent of the respondents claimed to be aware of dentistry, our findings revealed low level of knowledge and attitude to Dentistry by the medical undergraduate students. Efforts should be made towards closing this knowledge gap to attain effective oral health.

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Assessment of role of mandibular third molar in lower anterior crowding among orthodontic patients of Kathmandu Nepal

Orthodontic Journal of Nepal ◽

10.3126/ojn.v10i3.35486 ◽

2020 ◽

Vol 10 (3) ◽

pp. 21-26

Author(s):

Bashu Dev Pant ◽

Anjana Rajbhandari ◽

Resina Pradhan ◽

Manju Bajracharya ◽

Surendra Maharjan ◽

...

Keyword(s):

Third Molar ◽

Cross Sectional Study ◽

Third Molars ◽

Chi Square ◽

Cross Sectional ◽

Anterior Crowding ◽

Mandibular Third Molar ◽

Significant Difference ◽

Orthodontic Patients

Introduction: Crowding in mandibular arch increases with increasing age and etiology of crowding is multifactorial in nature. Role of mandibular third molar in lower anterior crowding remains a topic of controvery over a period of century. The objective of this study was to assess whether there is any correlation between presence of mandibular third molar position and lower anterior crowding. Materials and Method: On the basis of third molar position one hundred and six sample of pretreatment orthodontic patients aged between 17 to 38 years were divided into erupted, erupting and agenesis group. The study was conducted in Peoples Dental College and Hospital from January 2020 to March 2020 after obtaining ethical approval from the institutional review committee. This cross-sectional study was done on dental casts and orthopantomogram; brass wire was used for measuring arch length and digital vernier caliper for measuring tooth material with modified segmental arch analysis method. Result: Among 106 samples collected 55 (51.88%) were female and 51(48.11%) were male and the mean age was 21.53 ± 3.91 years, Chi square and ANOVA test was used for Statistical analysis. This study showed no statistically significant differences between third molar position and lower anterior crowding on right (P= 0.68) and left side (P = 0.45). The study also showed that association between the third molar position and lower anterior crowding is more on left side compared to right side. Conclusion: Mandibular third molars have not statistically significant difference in lower anterior crowding so, extraction of third molars for relieving the anterior crowding is not justifiable

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Position of lips and tongue in rest in newborns with and without ankyloglossia

CoDAS ◽

10.1590/2317-1782/20202020069 ◽

2021 ◽

Vol 33 (6) ◽

Author(s):

Silvia Márcia Andrade Campanha ◽

Roberta Lopes de Castro Martinelli ◽

Durval Batista Palhares

Keyword(s):

Visual Inspection ◽

Cross Sectional Study ◽

University Hospital ◽

Sectional Study ◽

Hospital Data ◽

Chi Square ◽

Cross Sectional ◽

Significance Level ◽

Significant Difference ◽

Chi Square Test

ABSTRACT Purpose Verify the position of lips and tongue at rest in newborns with and without ankyloglossia. Methods Cross-sectional study, carried out with 130 newborns in University Hospital. Data collection was performed by the researcher and speech-language pathologists from the Hospital. Information on gestational age, sex, weight, height and days of life was collected. The position of the lips and tongue at rest was evaluated through visual inspection with the newborns asleep. After the newborns were awakened, Neonatal Screening of the validated Protocol for the evaluation of the lingual frenulum for infants was performed to detect the alteration of the lingual frenulum. The data obtained were described and submitted to statistical analysis using the Chi-Square test to verify the association between the position of the lips with the tongue and to compare the position of the lips and tongue with and without ankyloglossia. The Mann-Whitney test was used to verify the behavior of the variables the differed between newborns with and without ankyloglossia. The significance level of 5% was adopted. Results When comparing the data, a significant difference was found between: weight and height with and without ankyloglossia; position of lips and tongue. An association between the position of the tongue and lips with and without ankyloglossia was also found. Conclusion Newborns without alteration of the lingual frenulum have a tendency to remain with their lips closed and their tongue elevated during rest and newborns with ankyloglossia have a tendency to keep their lips parted and their tongue low during rest.

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Knowledge, Attitudes and Practice of Dental Implants among Dental Interns in Saudi Arabia – A Cross-Sectional Study

The Open Dentistry Journal ◽

10.2174/1874210602014010440 ◽

2020 ◽

Vol 14 (1) ◽

pp. 440-449

Author(s):

Khaled Alzahrani ◽

Abdulrahman Mohammed Alnafisah ◽

Khalid Gohormallah Alzahrani ◽

Khalid Ghalib Alharbi

Keyword(s):

Saudi Arabia ◽

Dental Implants ◽

Clinical Skills ◽

Sampling Technique ◽

Practical Experience ◽

Cross Sectional Study ◽

Chi Square ◽

Cross Sectional ◽

Significant Difference ◽

Males And Females

Objective: The aim of the study is to assess knowledge, attitude and practices of dental implants among dental interns in Saudi Arabia Materials and Methods: A self-designed, close-ended questionnaire was distributed among 205 interns chosen by stratified random sampling technique. The questionnaire consisted of 28 items pertaining to demographic characteristics, knowledge and practices of dental implants. Responses were coded and entered into spreadsheet software (Microsoft Excel 16.0.) and analyzed using Statistical Package for Social Sciences (SPSS, IBM Version 22.0) and contingency tables and chi-square test (χ2). Results: The majority of the participants were males (64.4%), between 24-26 years of age (64%) and had a GPA between 4-5 (63.4%). The majority of the participants gained knowledge of dental implants through theoretical lectures (98.5%), and most of them (80%) knew, what material, an implant was made up of. Almost all participants (91.7%) knew that dental implants had surface modifications. Most (64.4%) believed that case selection is the most important criteria for the success of dental implant therapy, and this differed significantly among participants with respect to GPA (p=0.03). Many participants (60%) believed that the most important advantage of dental implants over fixed prosthesis is that reduction of adjacent tooth is not needed, and this differed significantly between males and females (p=0.026). There was a significant difference (p<0.001) between males and females when it came to confidence in independently restoring teeth using dental implants. 63% of the participants were confident to use dental implants in their future practice. Conclusion: Knowledge of dental implants among dental interns is satisfactory, but this study reveals that participants lack practical experience and would like to acquire more clinical skills. Limitations: The response rate of participants from each university was low, which made comparisons between different universities difficult because sample size from some universities was very small, which could not produce statistically accurate results.

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DIASTASIS RECTI AMONG PREGNANT AND POSTPARTUM WOMEN IN KANO, NIGERIA: A CROSS-SECTIONAL STUDY

Pakistan Journal of Rehabilitation ◽

10.36283/pjr.zu.6.1/003 ◽

2017 ◽

Vol 6 (1) ◽

pp. 15-20

Author(s):

Fatima Bichi ◽

Dr. Shumaila Hanif

Keyword(s):

Post Partum ◽

Sampling Technique ◽

Cross Sectional Study ◽

Postpartum Women ◽

Chi Square ◽

Cross Sectional ◽

Common Location ◽

Diastasis Recti ◽

Significant Difference ◽

The Difference

Diastasis Recti (DR) is a common muscular condition often present during and after pregnancy. This cross-sectional correlational study investigated the prevalence of DR among pregnant and postpartum women. A total of 250 pregnant and postpartum women were recruited using convenience sampling technique from obstetrics and gynaecology department, Aminu Kano Teaching Hospital, Kano, Nigeria. Age, body mass, height, BMI, parity, trimester, duration of DR postpartum, location of DR and DR status was recorded for each participant. Presence of DR was confirmed using the finger width method. Descriptive statistics of mean, SD, percentage were used to describe the data and determine the prevalence. Inferential statistics of Pearson’s and Spearman’s correlation were used to analyse the relationship between prevalence of DR and age, parity and duration of DR postpartum. Chi square was computed to determine the difference in prevalence of DR across trimesters. The result of this study indicated high prevalence of DR in post-partum and pregnant women (84% and 64.7% respectively); the most common location of DR was at the umbilicus in both pregnant and postpartum women. Prevalence of DR was high among the multigravida; and a significant relationship was found between prevalence of DR and age and parity of participants. There was a significant difference in prevalence of DR across the trimesters. It can be concluded that prevalence of DR among pregnant and postpartum women is high; age and parity are determinants of DR prevalence. Evaluation of DR should be considered as routine assessment in both pregnant and postpartum women.

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A Cross Sectional Study on Serological Prevalence of Ehrlichia canis and Rickettsia conorii in Different Canine Population of Sicily (South-Italy) during 2017–2019

Animals ◽

10.3390/ani10122444 ◽

2020 ◽

Vol 10 (12) ◽

pp. 2444

Author(s):

Sergio Migliore ◽

Valeria Gargano ◽

Claudia De Maria ◽

Delia Gambino ◽

Antonino Gentile ◽

...

Keyword(s):

Rhipicephalus Sanguineus ◽

Wide Distribution ◽

Cross Sectional Study ◽

Immunofluorescence Assay ◽

Rickettsia Conorii ◽

Chi Square ◽

Cross Sectional ◽

South Italy ◽

Significant Difference ◽

Canine Population

Vector-borne pathogens such as Erlichia canis and Rickettsia conorii are widespread in the Mediterranean basin. Rhipicephalus sanguineus, is considered the main vector in Mediterranean climatic areas. Seroprevalence in dogs is variable in relation to environmental factors, presence of vectors, and dogs’ management. We investigated the seroprevalence in Sicilian dogs during 2017–2019, considering temporal as well as spatial variations, and different canine population. A total of 11,009 sera were analyzed: 7568 and 3441 sera were tested to detect antibodies to E. canis and to R. conorii, respectively, by immunofluorescence assay. The rainfall average in the sampling sites during the three-year period was also considered. Statistical analyses were performed using chi-square tests for association between two or more variables. We reported a prevalence of 29.6% and 53.6% for E. canis and R. conorii, respectively. Significant temporal variation was found in R. conorii, while significant difference was found considering canine population and spatial variation regarding both pathogens. Our study updates the previous results of E. canis and R. conorii seroprevalence in dogs in Sicily, and confirms the wide distribution of these pathogens. In addition, we considered, for the first time, three different variables to identify the areas and the canine populations most exposed to risk.

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