Category: Statistics

Neurol Res. 2024 Jun 25:1-6. doi: 10.1080/01616412.2024.2367938. Online ahead of print.

ABSTRACT

BACKGROUND: Diabetic Peripheral Neuropathy (DPN) disrupts body and movement biomechanics, increases mechanical stress during walking, and predisposes individuals to injuries owing to the repetitive effects of these stresses.

AIMS: This study aimed to assess and compare the impact of neuropathy on gait and pelvic kinematics in individuals with DPN.

METHODS: This case-control study included two groups: 23 individuals diagnosed with DPN aged between 35-70 and 23 healthy individuals aged-35-70. The BTS-G, a wireless motion sensor, was used to assess the time-distance characteristics of walking in all participants. The system analyzed data pertaining to walking speed, cadence, percentages of stance and swing phases, durations of walking cycles, double-step lengths, pelvic tilt, obliquity, and rotation symmetries.

RESULTS: There were no statistically significant differences between the groups in cadence, left and right stance phase percentages, or left and right swing phase percentages (p > 0.05). However, significant differences were observed between the groups in terms of speed, left and right walking cycle durations, and left and right double-step lengths (p < 0.05). Additionally, no statistically significant difference was found between the groups in pelvic tilt symmetry and left and right pelvic tilt range of motion values (p > 0.05). Nevertheless, significant differences were identified between the groups in pelvic obliquity symmetry, pelvic rotation symmetry, left and right pelvic obliquity range of motion, and left and right pelvic rotation range of motion values (p < 0.05).

CONCLUSIONS: The findings of this study suggest that individuals with DPN exhibit decreased walking speed, prolonged gait cycle duration, increased double step length, and reduced pelvic obliquity and rotation range of motion.

PMID:38916096 | DOI:10.1080/01616412.2024.2367938

J Sports Med Phys Fitness. 2024 Jul;64(7):685-693. doi: 10.23736/S0022-4707.24.15516-8.

ABSTRACT

BACKGROUND: Physical activity (PA) is known to decrease COVID-19 risk factors and can attenuate symptoms of viral infections. However, difficulty exercising and fatigue are common complaints after COVID-19. It is unknown whether prior habitual PA will improve outcomes and what the time course is until full recovery of PA after COVID-19.

METHODS: Invitations were emailed to 21,933 adults who were SARS-CoV-2 positive between March 2020 and February 2021. Participants completed intake surveys and the Physical Activity History (PAH) questionnaire regarding PA during the 3-month prior to infection. Monthly thereafter, for up to 23 months, participants were emailed surveys. Scores were computed for moderate and heavy PA. Long COVID (LC) was defined as having recurring/persistent symptoms 9 months after diagnosis.

RESULTS: Overall, 993 patients completed the intake survey (age 50.7±15.8 years, BMI 27.3±9.2, 58% women); 28% had been hospitalized. One-third had recovered to their pre-infection level of PA at 9 months post-infection; this increased to 65% at one year, and 90% at two years. Higher pre-diagnosis PA reduced odds of hospitalization (P<0.05) but not of LC. Factors predictive of poor PA recovery were higher pre-diagnosis PA, shortness of breath and fatigue during acute illness, and fatigue chronically. Participants who reported ongoing symptoms had consistently poorer recovery of habitual PA compared to those not reporting chronic symptoms.

CONCLUSIONS: Habitual PA reduced odds of hospitalization but not of LC. Thirty-five percent had not returned to pre-COVID-19 levels of PA one year after infection, representing a major public health threat.

PMID:38916092 | DOI:10.23736/S0022-4707.24.15516-8

J Sports Med Phys Fitness. 2024 Jul;64(7):661-667. doi: 10.23736/S0022-4707.24.15584-3.

ABSTRACT

BACKGROUND: Recent studies indicate that using combination of two or more clinical tests for detecting meniscal tear gets a higher sensitivity and specificity than any clinical test performed individually.

METHODS: The study involved 84 participants who were divided into two groups: the “OP group” consisting of participants diagnosed with a meniscal tear and who consequently underwent arthroscopic meniscectomy, and the “CN group” comprising of healthy participants with no history of knee injury. Two independent observers (orthopedic surgeons) recorded the results of six clinical tests: Thessaly Test, joint line tenderness, McMurray Test, Ege Test, Steinmann I Test, and atrophy of the thigh muscles. The tests were grouped into two combinations of three tests each. The first combination included Thessaly Test, joint line tenderness and McMurray Test, while the second combination comprised of remaining three tests. Cochran’s Q Test was used to calculate interobserver variability for both combinations of clinical tests and for each test performed individually.

RESULTS: First combination of three clinical tests when considering the combination positive if two tests are positive had high sensitivity of 95%, specificity of 90.9%, and an overall accuracy of 92.9%. Furthermore, when compared to clinical tests performed individually, the combination demonstrated superior results.

CONCLUSIONS: This study shows that using a combination of three clinical tests for detection of meniscal tear (Thessaly Test, joint line tenderness, McMurray Test), when considering the combination positive if two tests are positive, has greater accuracy than six clinical tests performed individually. There were no statistically significant differences between observers.

PMID:38916089 | DOI:10.23736/S0022-4707.24.15584-3

Afr J Reprod Health. 2024 May 31;28(5):39-46. doi: 10.29063/ajrh2024/v28i5.5.

ABSTRACT

The incidence of new cases of thyroid cancer worldwide is around 10.1/100.000 in woman dan 3.1/100.000 in men. Women with thyroid cancer are advised to avoid pregnancy while undergoing radioablation due to teratogenicity. Therefore, it is crucial to utilize contraception to avoid pregnancy during treatment. The purpose of this study was to determine the characteristics of contraceptive use patterns in women with thyroid cancer of reproductive age who underwent radioablation at Hasan Sadikin Hospital Bandung.Cross-sectional study conducted at Hasan Sadikin Hospital Bandung in May 2023. The research sample was all female thyroid cancer of reproductive age who underwent radioablation at the Nuclear Medicine polyclinic of Dr. Hasan Sadikin Bandung in January-December 2022 by purposive sampling. Data obtained from patient medical records and primary data from patients. A total of 450 patients fulfilled inclusion criteria, but only 329 analyzed with complete data. Majority of the patient was in age group 35-49 years (58.1%), parity >1 (55.9%), last education high school (39.2%), married (81.8%), type of papillary thyroid carcinoma (79.9%), sources of information about contraception from doctors (71.7%), and 75.4% use contraception. The most widely used type of contraception was intrauterine device (IUD), accounting for 28.6% patients. Approximately 75.4% patient use contraception. The most widely used type of contraception is the IUD. Contraception counselling is important for increasing contraceptive use rates among women with thyroid cancer. Further research in the form of analytical research is needed to assess the factors that influence contraceptive use in women with thyroid cancer of reproductive age.

PMID:38916057 | DOI:10.29063/ajrh2024/v28i5.5

Hosp Pediatr. 2024 Jun 25:e2023007125. doi: 10.1542/hpeds.2023-007125. Online ahead of print.

ABSTRACT

BACKGROUND AND OBJECTIVES: Current research implies overuse of diagnostic testing and overtreatment in children with tracheostomies. There are no guidelines for obtaining sputum cultures for these patients, yet they are commonly obtained without significantly affecting management or outcomes. The aim of our quality improvement project was to decrease rate of sputum cultures in this population by 50%, from 64% to 32%.

METHODS: This was a single-center quality improvement project conducted in a pediatric emergency department (ED). Key drivers included: Standardized decision-making, appropriate culture collection, knowledge regarding colonization versus clinically relevant growth, and viral versus bacterial infections in this population. The study team developed an algorithm, used modification to electronic medical records orders, and provided education to drive change. Six months of preintervention and 12 months postintervention data were collected. Run charts/statistical process charts were created for the rate of cultures, length of stay, and return to the ED.

RESULTS: There were 159 patient encounters and the rate of sputum cultures decreased from 64% at baseline to 25% without change in length of stay or increased rate at which patients returned to the ED, including during local coronavirus disease 2019 and respiratory syncytial virus surges. We observed nonrandom data patterns after introduction of algorithm resulting in centerline shifts.

CONCLUSIONS: The study team was able to introduce an algorithm coinciding with a reduction in number of sputum cultures obtained. Next steps would be determining safety and efficacy of such an algorithm over a larger population.

PMID:38916049 | DOI:10.1542/hpeds.2023-007125

Mol Biol Evol. 2024 Jun 25:msae131. doi: 10.1093/molbev/msae131. Online ahead of print.

ABSTRACT

Phylogenomic analyses of long sequences, consisting of many genes and genomic segments, infer organismal relationships with high statistical confidence. But, these relationships can be sensitive to excluding just a few sequences. Currently, there is no direct way to identify fragile relationships and the associated individual gene sequences in species. Here, we introduce novel metrics for gene-species sequence concordance and clade probability derived from evolutionary sparse learning models. We validated these metrics using fungi, plant, and animal phylogenomic datasets, highlighting the ability of the new metrics to pinpoint fragile clades and the sequences responsible. The new approach does not necessitate the investigation of alternative phylogenetic hypotheses, substitution models, or repeated data subset analyses. Our methodology offers a streamlined approach to evaluating major inferred clades and identifying sequences that may distort reconstructed phylogenies using large datasets.

PMID:38916040 | DOI:10.1093/molbev/msae131

Cureus. 2024 May 22;16(5):e60826. doi: 10.7759/cureus.60826. eCollection 2024 May.

ABSTRACT

Background Chronic liver disease (CLD) is associated with a variety of consequences, including thrombocytopenia and esophageal varices, which significantly impact patient prognosis and management. Thrombocytopenia, frequently observed in patients with CLD, may correlate with the severity of esophageal varices, a critical complication leading to variceal bleeding. Methodology A cross-sectional study was carried out in the Department of Medicine and Gastroenterology, Pak Emirates Military Hospital, Rawalpindi, from October 2021 to March 2022. The study enrolled 94 patients, aged 18-70 years, diagnosed with CLD, regardless of the cause. These patients were categorized into four groups based on platelet count: <50,000/uL, 50,000-99,999/uL, 100,000-150,000/uL, and >150,000/uL. Pearson’s correlation was utilized to evaluate the association between the severity of thrombocytopenia and the grading of esophageal varices. Results A total of 94 patients were enrolled in the study, with 53 (56.4%) males and 41 (43.6%) females. The mean age of patients was 51.06 ±11.09 years. Seventeen (18.1%) had no esophageal varices, 16 (17.0%) were diagnosed with Grade I varices, 35 (37.2%) with Grade II varices, and 26 (27.7%) had Grade III varices. Most patients without varices had a platelet count above 150 x 10³ (17, 18.1%). Conversely, most patients with Grade III varices (19, 20.2%) had platelet counts below 50 x 10³. Patients with no esophageal varices had a mean platelet count of 173.70 ± 37.48 x 10³. Among the patients, those with Grade III esophageal varices exhibited the lowest mean platelet count, recorded at 78.54 ± 24.14 x 10³. These findings indicate a statistically significant difference in mean platelet counts across the various esophageal varices grades (P = 0.000). There was an inverse correlation of platelet count with the grading of esophageal varices (r = -0.645, P < 0.000). Conclusions A negative correlation was observed between the platelet count and the grading of esophageal varices, implying that as the severity of esophageal varices increased, the platelet counts proportionally decreased.

PMID:38916026 | PMC:PMC11195516 | DOI:10.7759/cureus.60826

Cureus. 2024 May 25;16(5):e61033. doi: 10.7759/cureus.61033. eCollection 2024 May.

ABSTRACT

Background and objective Procrastination, which refers to the act of unnecessarily delaying the beginning or completion of an assigned task, is a widespread but often neglected problem among college students. Postponing a task can impair academic performance or lead to stress and poor mental well-being. A knowledge gap exists in understanding the cyclical nature of the relationship between anxiety and procrastination, wherein anxiety leads to procrastination, which in turn exacerbates anxiety. In light of this, we aimed to assess the level of procrastination and anxiety among college students and to correlate the relationship between their procrastination and anxiety status. Methodology A cross-sectional analytical study was conducted among 347 graduate students from various disciplines at a tertiary care hospital in Puducherry, India. A convenient sampling technique was employed to recruit the participants, and data were collected using the validated Procrastination Assessment Scale for Students (PASS) and the Hamilton Anxiety Rating Scale (HAM-A). Results Our findings showed that about 124 (35.7%) participants reported weekly reading assignments as the most frequently procrastinated task, with a mean score of 3.15 ± 1.02, followed by studying for exams and writing term papers. The most commonly reported reason for procrastination was evaluation anxiety, followed by low self-esteem and perfectionism. A significant number of students (157, 45.2%) had mild anxiety, and 58 (16.7%) students were found to have severe anxiety. A Spearman correlation coefficient of 0.26 (95% CI: 0.16 – 0.36) was observed between the overall procrastination score and HAM-A score, which indicated a weak positive correlation and was statistically significant (p<0.05). Similarly, a weak positive correlation was found between task aversiveness, fear of failure, and anxiety levels. Conclusions Procrastination is positively related to anxiety but the relationship is weak. Understanding and addressing the underlying anxiety or stress can be a key to managing procrastination among college students.

PMID:38916017 | PMC:PMC11194534 | DOI:10.7759/cureus.61033

Cureus. 2024 May 25;16(5):e61041. doi: 10.7759/cureus.61041. eCollection 2024 May.

ABSTRACT

OBJECTIVE: To compare the bond strength of two types of resin cement to that of additive manufacturing (AM) or cast cobalt-chromium (Co-Cr) alloys.

MATERIALS AND METHODS: Two types of resin luting cement, composite resin and methyl methacrylate (MMA), were bonded to AM or cast Co-Cr alloys, and shear bond tests were performed after seven days of storage in distilled water at 37°C. Co-Cr alloy adhesive elements AM to the enamel surface of the labial aspect of a bovine mandibular central incisor crown were bonded with two types of resin luting cement and subjected to 1,000 cycles of storage in water for one day and 28 days or thermal cycling, followed by shear bonding tests. Residual cement on the metal and enamel surfaces after the bonding tests was evaluated using an optical microscope. The normality of the results was evaluated using statistical software Statcel4, analysis of variance, or Kruskal-Wallis test, depending on normality, and multiple comparison tests were performed using the Tukey-Kramer or Steel-Dwass tests.

RESULTS: After one day, the shear bond strength (SBS) was 25.9 MPa for Panavia V5 (PV; Kuraray Noritake Dental Corporation, Niigata, Japan) and 23.5 MPa for Super-Bond (SB; Sun Medical Corporation, Shiga, Japan), with no significant difference between the two cement types (P > 0.05). After 28 days, the SBS decreased to 4.1 MPa for PV and 6.7 MPa for SB, showing a significant difference between the two cements (P < 0.05). Following 1,000 thermal cycles, the SBS was 2.0 MPa for PV and 5.6 MPa for SB, with SB exhibiting a significantly higher value (P < 0.05). The adhesive strength was significantly lower after 28 days of storage and thermal cycling compared to after one day of storage (P < 0.05). The Co-Cr alloy exhibited more residual cement on the enamel surface due to interfacial fracture with the resin cement. The Co-Cr alloy showed more residual cement on the enamel surface due to interfacial fracture with the resin cement.

CONCLUSION: MMA-based resin cement showed optimal bond strength and may be suitable for clinical use in computer-aided design (CAD)/computer-aided manufacturing (CAM) orthodontic appliances.

PMID:38916016 | PMC:PMC11194759 | DOI:10.7759/cureus.61041

Cureus. 2024 May 25;16(5):e61040. doi: 10.7759/cureus.61040. eCollection 2024 May.

ABSTRACT

Background Knee osteoarthritis (KOA) is the most typical cause of knee pain and impairment worldwide. It is typified by slow and progressive degeneration of the articular cartilage of the knee joint. Although KOA is being managed with a variety of therapies, the comparison of the effectiveness of different intra-articular injections in KOA treatment in Pakistan is still not thoroughly investigated. Therefore, the purpose of this current study is to compare the efficacy of intra-articular administration of platelet-rich plasma (PRP) and corticosteroids (CSs) in the treatment of KOA. Methods This prospective comparative study was performed among one hundred patients diagnosed with KOA in Benazir Bhutto Hospital, Rawalpindi, for one year from April 2022 to March 2023. Specified inclusion and exclusion criteria were employed for patient enrollment. Patients were divided into two equal groups through simple random sampling. Group A patients received an intra-articular injection of PRP solution whereas group B patients received an intra-articular injection of CSs. Informed consent and ethical approval were also acquired prior to data collection. A self-designed proforma based on interviews was used to collect data. The data analysis in Statistical Package for the Social Sciences (IBM SPSS Statistics for Windows, IBM Corp., Version 25.0, Armonk, NY) was carried out via descriptive statistics and an independent t-test. Results Women (N=71, 71%) had a higher prevalence of KOA than men (N=29, 29%). The means of study variables like age, Visual Analog Scale (VAS) score, and Western Ontario and McMaster Universities (WOMAC) score were 56.10 ± 8.70 years, 8.08 ± 1.6, and 70.08 ± 8.76 respectively. The frequency of KOA on the right side was 62% (N=62) while it was 38% (N=38) on the left side. In the study population, 69% (N=69) patients had grade II KOA, and 31% (N=31) patients had grade III KOA. At the first-month, second-month, and third-month follow-up visits, there were statistically significant differences in the mean scores of the WOMAC and VAS between the study groups. However, at the first-month follow-up visit, mean scores of VAS and WOMAC were lower in group B than in group A while these were lower in group A as compared to group B, at the second-month and third-month follow-up appointments. Conclusions Intra-articular infiltration of both PRP and CSs was efficacious in the treatment of KOA-related pain and functional limitations; however, overall improvement in the PRP group was higher than CS group.

PMID:38916012 | PMC:PMC11194758 | DOI:10.7759/cureus.61040