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Nevin Manimala Statistics

Self-Reported Neck and Back Pain among Supermarket Cashiers in Gaborone, Botswana

Int J Occup Saf Ergon. 2022 Aug 5:1-33. doi: 10.1080/10803548.2022.2108653. Online ahead of print.

ABSTRACT

OBJECTIVE: Investigate the prevalence, risk factors and impacts of neck and back pain among supermarkets cashiers in Botswana.

MATERIALS AND METHODS: A cross-sectional study was conducted among supermarkets cashiers using self-administered. Data were analysed using χ2 and logistic regression models. Statistical significance was assumed at p<0.05.

RESULTS: A total of 174 supermarkets cashiers participated in this study majority of whom were females (72%). The prevalence of lower back pain was 69%, upper back pain 53% and neck pain 37%. Increasing age was associated with neck 95% CI [1.43-5.15] and upper back 95% CI [1.43-3.60] pain. Cashiers working at low work surface and overreaching for items were 19 and 11 times more likely to report neck 95% CI [1.7-255.9] and lower back 95% CI [1.84-62.1] pain, respectively. Almost 6% of cashiers who reported lower back pain reported considering changing jobs due to pain.

CONCLUSIONS: More than two-thirds, half and about two-fifths of supermarket cashiers reported lower back, upper back and neck pain, respectively. Individual and work-related factors were associated with neck and/or back pain. Back and neck pain workers’ health and wellbeing, their families, workplace productivity and the health care system. To reduce their prevalence and progression, supermarkets should introduce occupational health and safety talks.

PMID:35930246 | DOI:10.1080/10803548.2022.2108653

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Nevin Manimala Statistics

Factor Structure of the Memory for Intentions Test (MIsT): A Conceptual Replication in Older Adults and People with HIV Disease

J Clin Exp Neuropsychol. 2022 Aug 5:1-12. doi: 10.1080/13803395.2022.2107183. Online ahead of print.

ABSTRACT

OBJECTIVE: The Memory for Intentions Test (MIsT) is a clinical measure of prospective memory that has strong evidence for convergent, discriminative, and ecological validity. This study uses a conceptual replication design to evaluate the latent structure of the MIsT in two parallel samples who commonly experience prospective memory deficits: older adults and people living with HIV disease.

PARTICIPANTS AND METHODS: Study participants included 303 people with HIV disease (ages 18-67) and 267 community-dwelling older adults (ages 50-91). Confirmatory factor analyses of the MIsT were conducted separately in each sample. We evaluated a one-factor model, as well as three two-factor models with the MIsT items loading onto each factor based on cue type, delay interval, or response modality.

RESULTS: The one-factor model provided the best (and most parsimonious) fit to the data in both study samples. All two-factor models also demonstrated good fit statistics, although correlations between the two factors in each model were high and none of the two-factor models provided a significantly better fit than the one-factor model.

CONCLUSIONS: Results of this conceptual replication study provide support for a robust factor structure of the MIsT across older adults and people with HIV disease. A total score for the MIsT provides the most parsimonious solution, although available evidence and theory also support the potential use of subscales (e.g., cue type). Future studies of the MIsT would be useful to determine its psychometrics in different clinical populations and across demographic factors (e.g., race/ethnicity).

PMID:35930244 | DOI:10.1080/13803395.2022.2107183

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Nevin Manimala Statistics

Clinical utility of the Saint Louis University Mental Status Examination (SLUMS) in a mixed neurological sample: Proposed revised cutoff scores for normal cognition, mild cognitive impairment, and dementia

Appl Neuropsychol Adult. 2022 Aug 5:1-8. doi: 10.1080/23279095.2022.2106572. Online ahead of print.

ABSTRACT

Early detection of cognitive impairment is of paramount importance in clinical settings, with several brief screening tools having been developed for that purpose. The present study sought to evaluate the clinical utility of the Saint Louis University Mental Status examination (SLUMS) at identifying examinees with normal cognition, mild cognitive impairment, or dementia syndrome using the criterion of a comprehensive neuropsychological assessment. Two hundred sixty-three examinees (M age = 67.84 ± 12.72; 59.3% female; 81.4% white) were referred for comprehensive neuropsychological evaluation at a private, Mid-Atlantic medical center. Using original cutoff scores, the SLUMS correctly classified just over half (55.1%) of examinees. Classification statistics suggested modified cutoff scores for mild cognitive impairment (≤24) and dementia (≤17) with strong discriminability between cognitive status groups (AUCs ranged from .834 to .986). These proposed revised cutoff scores improved overall concordance between SLUMS and diagnostic conclusions from comprehensive clinical neuropsychological testing, correctly classifying nearly two-thirds of examinees (65.4%). The SLUMS and its revised cutoff scores appear to have clinical utility for cognitive screening in primary care and neurological settings to inform treatment plans and appropriate referrals for comprehensive neuropsychological assessment.

PMID:35930237 | DOI:10.1080/23279095.2022.2106572

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Nevin Manimala Statistics

QTc Prolongation in Poison Center Exposures to CredibleMeds List of Substances with “Known Risk of Torsades de Pointes”

Cardiovasc Toxicol. 2022 Aug 5. doi: 10.1007/s12012-022-09764-4. Online ahead of print.

ABSTRACT

Many drugs carry some risk of QT interval prolongation, which can lead to life-threatening dysrhythmias including Torsades de Pointes (TdP). CredibleMeds.org identifies medications categorized as “Known Risk of TdP” but does not stratify risk in acute supratherapeutic ingestions. We sought to determine the proportion of cases exhibiting QTc prolongation and life-threatening dysrhythmias including ventricular tachycardia (VT)/ventricular fibrillation (VF), TdP, and asystole in patients exposed to these substances. Retrospective chart review of cases reported to our Regional Poison Center from 2014 to 2019 of exposures to one or more of the “Known Risk” substances was performed. Demographics, therapies, clinical effects, and medical outcome for each case were analyzed. There were 1125 exposures, of which 760 had a documented QTc interval. QTc ≥ 500 ms was reported in 138 (18.2%) of the 760 cases. The most common “Known Risk” substances were citalopram, escitalopram and cocaine. Although not in the “Known Risk” category, mirtazapine, amitriptyline, diphenhydramine, and trazodone had a statistically significant association with QTc > 500 ms. Life-threatening dysrhythmias occurred in 13 cases, with VT/VF in 6 of the 760 (0.8%) cases, and one case of TdP. Flecainide (OR 11.1, 95% CI 2.2-55.8) and methadone (OR 7.1, 95% CI 2.1-23.4) were associated with increased risk of all life-threatening dysrhythmias. Exposures to medications on the Credible Meds list of “Known Risk of TdP” QTc prolongation is common, but life-threatening dysrhythmias are rare. Mirtazapine, amitriptyline, diphenhydramine, and trazodone were associated with prolonged QTc. Flecainide and methadone had the highest associated risk of life-threatening dysrhythmias.

PMID:35930218 | DOI:10.1007/s12012-022-09764-4

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Nevin Manimala Statistics

Risk Factors Associated with Loss to Follow-up Among Transgender Women Receiving HIV Pre-exposure Prophylaxis in Chiang Mai province, Thailand

AIDS Behav. 2022 Aug 5. doi: 10.1007/s10461-022-03782-7. Online ahead of print.

ABSTRACT

Although HIV pre-exposure prophylaxis (PrEP) is free in Thailand, many transgender women discontinue taking it after initiation. We determined the loss to follow-up (LTFU) rate of transgender women who initiated PrEP at the Mplus Foundation, Chiang Mai, Thailand, and identified associated risk factors using Cox proportional hazard models. Of 235 participants who initiated PrEP, 59 (55%) out of 108 remaining participants had reactive syphilis. The LTFU rate at 6 months was 38% (95% confidence interval [CI]: 29-48%). Multivariable analysis indicates that LTFU is independently associated with age ≥ 26 years old (adjusted hazard ratio [aHR] = 2.09; 95% CI: 1.06-4.14) and reactive syphilis (aHR = 1.98; 95% CI:1.01-3.88). Delayed appointment scheduling by the PrEP providers and the syphilis clinic was associated with transgender women having reactive syphilis, and the lockdown policy during the COVID-19 pandemic might have influenced them to discontinue PrEP and their subsequent LTFU.

PMID:35930202 | DOI:10.1007/s10461-022-03782-7

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Nevin Manimala Statistics

Digital Shoreline Analysis System improvement for uncertain data detection in measurements

Environ Monit Assess. 2022 Aug 5;194(9):646. doi: 10.1007/s10661-022-10299-y.

ABSTRACT

Digital Shoreline Analysis System (DSAS) is the most frequently used coastal engineering system for shoreline change quantification. Factors like human and system errors, wrong perception of the shoreline changes, and non-exact data sources may cause errors in the measured data. Detection and modification of such data can increase the accuracy of results. At present, the DSAS tool lacks this capability, so this research aimed to present a new module for DSAS to detect uncertain data in shoreline change rate measurements. The module’s basis for detecting uncertain data is to use statistical methods: adjusted boxplot, Grubbs’ test, standard deviation tests, median test, modified Z-score test, and voting method. The module’s performance was evaluated based on a data set obtained through Qeshm Island shoreline change quantification in Iran. The details of these methods, the prepared module, the case study, and the shoreline change measurement statistical methods were discussed in this study. The results showed the acceptable output of this module in detecting uncertain data.

PMID:35930198 | DOI:10.1007/s10661-022-10299-y

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Nevin Manimala Statistics

Efficacy of CPAP duration and adherence for cognitive improvement in patients with obstructive sleep apnea: a meta-analysis of randomized controlled trials

Sleep Breath. 2022 Aug 5. doi: 10.1007/s11325-022-02687-y. Online ahead of print.

ABSTRACT

PURPOSE: Obstructive sleep apnea (OSA) can impair cognition. Continuous positive airway pressure (CPAP) is a recommended treatment for OSA but its effectiveness on cognitive improvement is uncertain, a finding which may be biased by various durations and adherence to treatment with CPAP. In a meta-analysis assessing high-quality randomized controlled trials (RCTs), we estimated whether or not CPAP benefits cognition in patients with OSA.

METHODS: PRISMA criteria were followed in the performance of this meta-analysis. The weighted mean difference (WMD) and 95% confidence interval (CI) of six neuropsychological scores covering eight cognitive domains were used to evaluate the benefit between CPAP and non-CPAP interventions. Subgroups of different therapeutic durations and adherence, which were divided into short-term (< 8 weeks) and long-term (≥ 12 weeks) durations, and poor (nighttime < 4 h/night) and good (nighttime ≥ 4 h/night) adherence were also analyzed.

RESULTS: Among 16 RCTs, 1529 participants with OSA were included. Comparing the CPAP group and the control group for all treatment durations and adherence, a mild improvement for digit span forward which reflected short-term memory was observed (WMD[95%CI] = 0.67[0.03,1.31], p = 0.04). Trail making test-part B, which reflected executive function was improved for participants with OSA who had good adherence to CPAP (WMD[95%CI] = – 6.24[- 12.60,0.12], p = 0.05). Patients with OSA who received short-term CPAP treatment (WMD[95%CI] = – 7.20[- 12.57, – 1.82], p = 0.009) had a significant improvement in executive function when compared with controls. There was no statistical difference for all scales between long-term (≥ 12 weeks) CPAP treatment group and control group.

CONCLUSION: The effectiveness of CPAP on cognitive improvement in patients with OSA is limited, although good adherence to CPAP can mildly benefit executive function with short-term effectiveness.

PMID:35930191 | DOI:10.1007/s11325-022-02687-y

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Nevin Manimala Statistics

The effect of attenuation inside the acoustic traps on the configuration of vertical artifacts in lung ultrasound: an experimental study with simple models

J Med Ultrason (2001). 2022 Aug 5. doi: 10.1007/s10396-022-01244-0. Online ahead of print.

ABSTRACT

PURPOSE: Using simple experimental models for lung ultrasound, we evaluated the relationship of the attenuation inside the sources of vertical artifacts to the echo intensity and attenuation of artifacts.

METHODS: As sources of artifacts, we made 10 different hemispherical gel objects with two different mediums (pure agar or agar containing graphite with an attenuation coefficient of 0.5 dB/cm · MHz) and five different diameters (3.6, 5.6, 7.5, 9.5, or 11.4 mm). Ten of each hemispherical gel object were prepared for the statistical analyses. Each object was placed onto a chest wall phantom as the plane of the hemisphere was placed in an upward position. The echo intensity and attenuation of the artifact generated from each object was measured and compared.

RESULTS: For all sizes, the intensity and attenuation of the artifacts in the objects made of agar containing graphite were significantly lower and larger, respectively, than those in the objects made of pure agar. In the objects containing graphite, the intensity decreased when the frequency was changed from 5 to 9 MHz.

CONCLUSION: Based on this experiment, assessing the intensity and attenuation of vertical artifacts may help estimate the physical composition of sources of vertical artifacts in lung ultrasound.

PMID:35930175 | DOI:10.1007/s10396-022-01244-0

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Nevin Manimala Statistics

Exploring fish assemblage structure, feeding guild, and water quality in a typical river-reservoir interface of tropical large reservoir environment, Central India

Environ Sci Pollut Res Int. 2022 Aug 5. doi: 10.1007/s11356-022-22267-7. Online ahead of print.

ABSTRACT

The present study aims to understand the spatio-temporal dynamics in habitat ecology and fish assemblage and determine the relationship of habitat transition and fish distribution in a large riverine-reservoir cascade system (Sardar Sarovar Reservoir part in Madhya Pradesh). This study was carried out along a 125-km riverine-reservoir interface (RRI) during 2018-2020. The study showed presence of a total of 110 fish species (104 spp. in upstream main Narmada River stretch excluding reservoirs, 56 in RRI, and 39 in Sardar Sarovar reservoir). We recorded 50 species common in upstream riverine stretch of Narmada and the RRI while RRI uniquely harbored 3 native species (Chitala chitala, Labeo boga, Salmostoma phulo) not previously reported from Narmada River stretch upstream. The similarity percentage (SIMPER) analysis showed presence of S. phulo causing 27.91%, Schistura dayi (3.71%), and Rita pavimentata (3.41%) of dissimilarity among Maheshwar (S1), Rajghat (S2), Koteshwar (S3) non-confluence zone, and Kakrana (S4)-confluence zone. The analysis of data indicated disappearance of some species like deccan peninsular carp Labeo fimbriatus, Mahseer Tor khudree which was earlier reported but was absent in recent years. The statistical correlation of environmental variables with observed abundances of fish feeding guilds showed significant positive correlation with specific conductivity and total dissolved solid content of the water. The canonical correspondence analysis (CCA) indicated association among omnivorous fishes of the reservoir with water temperature; total dissolved solids; specific conductivity; total alkalinity; chlorophyll; and NO3-N. The herbivore fishes were found to be more associated with magnesium, dissolved oxygen, and phosphorus content of the water while insectivorous fishes were more associated with the silicate and transparency of the water. The abundance of omnivores species indicated dominance of generalist fish species rather than specialists in the interface region of reservoir showing conservation and ecological importance of the ecosystem. The baseline information generated on fish assemblage and ecological perspectives of the river reservoir interface and science-based management recommendations formulated in the study are critical for sustaining fish diversity, promoting fisheries enhancement, and management planning of tropical large reservoirs.

PMID:35930149 | DOI:10.1007/s11356-022-22267-7

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Nevin Manimala Statistics

Application of advanced trend analysis techniques with clustering approach for analysing rainfall trend and identification of homogenous rainfall regions in Delhi metropolitan city

Environ Sci Pollut Res Int. 2022 Aug 5. doi: 10.1007/s11356-022-22235-1. Online ahead of print.

ABSTRACT

In the era of global urbanization, the cities across the world are experiencing significant change in the climate pattern. However, analysing the trend and pattern of rainfall over the urban areas has a number of challenges such as availability of long-term data as well as the uneven distribution of rain-gauge stations. In this research, the rainfall regionalization approach has been applied along with the advanced statistical techniques for analysing the trend and pattern of rainfall in the Delhi metropolitan city. Fuzzy C-means and K-means clustering techniques have been applied for the identification of homogeneous rainfall regions while innovative trend analysis (ITA) along with the family of Mann-Kendall (MK) tests has been applied for the trend analysis of rainfall. The result shows that in all rain-gauge stations of Delhi, an increasing trend in rainfall has been recorded during 1991-2018. But the rate of increase was low as the trend slope of ITA and Sen’s slope in MK tests are low, which varies between 0.03 and 0.05 and 0.01 and 0.16, respectively. Furthermore, none of the rain-gauge stations have experienced a monotonic trend in rainfall as the null hypothesis has not been rejected (p value > 0.05) for any stations. Furthermore, the study shows that ITA has a better performance than the family of MK tests. The findings of this study may be utilized for the urban flood mitigation and solving other issues related to water resources in Delhi and other cities.

PMID:35930147 | DOI:10.1007/s11356-022-22235-1