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1.
N Engl J Med ; 388(7): 621-634, 2023 02 16.
Artículo en Inglés | MEDLINE | ID: mdl-36791162

RESUMEN

BACKGROUND: Safe and effective vaccines against coronavirus disease 2019 (Covid-19) are urgently needed in young children. METHODS: We conducted a phase 1 dose-finding study and are conducting an ongoing phase 2-3 safety, immunogenicity, and efficacy trial of the BNT162b2 vaccine in healthy children 6 months to 11 years of age. We present results for children 6 months to less than 2 years of age and those 2 to 4 years of age through the data-cutoff dates (April 29, 2022, for safety and immunogenicity and June 17, 2022, for efficacy). In the phase 2-3 trial, participants were randomly assigned (in a 2:1 ratio) to receive two 3-µg doses of BNT162b2 or placebo. On the basis of preliminary immunogenicity results, a third 3-µg dose (≥8 weeks after dose 2) was administered starting in January 2022, which coincided with the emergence of the B.1.1.529 (omicron) variant. Immune responses at 1 month after doses 2 and 3 in children 6 months to less than 2 years of age and those 2 to 4 years of age were immunologically bridged to responses after dose 2 in persons 16 to 25 years of age who received 30 µg of BNT162b2 in the pivotal trial. RESULTS: During the phase 1 dose-finding study, two doses of BNT162b2 were administered 21 days apart to 16 children 6 months to less than 2 years of age (3-µg dose) and 48 children 2 to 4 years of age (3-µg or 10-µg dose). The 3-µg dose level was selected for the phase 2-3 trial; 1178 children 6 months to less than 2 years of age and 1835 children 2 to 4 years of age received BNT162b2, and 598 and 915, respectively, received placebo. Immunobridging success criteria for the geometric mean ratio and seroresponse at 1 month after dose 3 were met in both age groups. BNT162b2 reactogenicity events were mostly mild to moderate, with no grade 4 events. Low, similar incidences of fever were reported after receipt of BNT162b2 (7% among children 6 months to <2 years of age and 5% among those 2 to 4 years of age) and placebo (6 to 7% among children 6 months to <2 years of age and 4 to 5% among those 2 to 4 years of age). The observed overall vaccine efficacy against symptomatic Covid-19 in children 6 months to 4 years of age was 73.2% (95% confidence interval, 43.8 to 87.6) from 7 days after dose 3 (on the basis of 34 cases). CONCLUSIONS: A three-dose primary series of 3-µg BNT162b2 was safe, immunogenic, and efficacious in children 6 months to 4 years of age. (Funded by BioNTech and Pfizer; ClinicalTrials.gov number, NCT04816643.).


Asunto(s)
Vacuna BNT162 , COVID-19 , Adolescente , Niño , Preescolar , Humanos , Lactante , Adulto Joven , Anticuerpos Antivirales/sangre , Anticuerpos Antivirales/inmunología , Vacuna BNT162/administración & dosificación , Vacuna BNT162/efectos adversos , Vacuna BNT162/inmunología , Vacuna BNT162/uso terapéutico , COVID-19/sangre , COVID-19/inmunología , COVID-19/prevención & control , Vacunas contra la COVID-19/administración & dosificación , Vacunas contra la COVID-19/efectos adversos , Vacunas contra la COVID-19/inmunología , Vacunas contra la COVID-19/uso terapéutico , Inmunoglobulina G/sangre , Inmunoglobulina G/inmunología , Vacunas/efectos adversos , Vacunas/uso terapéutico , Inmunogenicidad Vacunal , Resultado del Tratamiento , Eficacia de las Vacunas
2.
N Engl J Med ; 386(1): 35-46, 2022 01 06.
Artículo en Inglés | MEDLINE | ID: mdl-34752019

RESUMEN

BACKGROUND: Safe, effective vaccines against coronavirus disease 2019 (Covid-19) are urgently needed in children younger than 12 years of age. METHODS: A phase 1, dose-finding study and an ongoing phase 2-3 randomized trial are being conducted to investigate the safety, immunogenicity, and efficacy of two doses of the BNT162b2 vaccine administered 21 days apart in children 6 months to 11 years of age. We present results for 5-to-11-year-old children. In the phase 2-3 trial, participants were randomly assigned in a 2:1 ratio to receive two doses of either the BNT162b2 vaccine at the dose level identified during the open-label phase 1 study or placebo. Immune responses 1 month after the second dose of BNT162b2 were immunologically bridged to those in 16-to-25-year-olds from the pivotal trial of two 30-µg doses of BNT162b2. Vaccine efficacy against Covid-19 at 7 days or more after the second dose was assessed. RESULTS: During the phase 1 study, a total of 48 children 5 to 11 years of age received 10 µg, 20 µg, or 30 µg of the BNT162b2 vaccine (16 children at each dose level). On the basis of reactogenicity and immunogenicity, a dose level of 10 µg was selected for further study. In the phase 2-3 trial, a total of 2268 children were randomly assigned to receive the BNT162b2 vaccine (1517 children) or placebo (751 children). At data cutoff, the median follow-up was 2.3 months. In the 5-to-11-year-olds, as in other age groups, the BNT162b2 vaccine had a favorable safety profile. No vaccine-related serious adverse events were noted. One month after the second dose, the geometric mean ratio of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) neutralizing titers in 5-to-11-year-olds to those in 16-to-25-year-olds was 1.04 (95% confidence interval [CI], 0.93 to 1.18), a ratio meeting the prespecified immunogenicity success criterion (lower bound of two-sided 95% CI, >0.67; geometric mean ratio point estimate, ≥0.8). Covid-19 with onset 7 days or more after the second dose was reported in three recipients of the BNT162b2 vaccine and in 16 placebo recipients (vaccine efficacy, 90.7%; 95% CI, 67.7 to 98.3). CONCLUSIONS: A Covid-19 vaccination regimen consisting of two 10-µg doses of BNT162b2 administered 21 days apart was found to be safe, immunogenic, and efficacious in children 5 to 11 years of age. (Funded by BioNTech and Pfizer; ClinicalTrials.gov number, NCT04816643.).

3.
BMC Psychiatry ; 23(1): 86, 2023 02 03.
Artículo en Inglés | MEDLINE | ID: mdl-36737757

RESUMEN

OBJECTIVE: Diabetes distress typically causes depressive symptoms; common comorbidity of diabetes unpleasantly affects patients' medical and psychological functions. Psychotherapeutic interventions are effective treatments to treat depressive symptoms and to improve the quality of life in many chronic diseases including diabetes. The present study investigated the efficacy of cognitive behavior therapy (CBT) to treat depressive symptoms in patients with type 2 diabetes mellitus (T2DM) using experimental and waitlist control conditions. MATERIALS AND METHODS: A total of 130 diagnosed patients with T2DM were taken from outdoor patients services of different hospitals in Faisalabad. Ninety patients met the eligibility criteria and were randomly assigned to experimental (n = 45) and waitlist control (n = 45) conditions. All the patients completed clinical interviews and assessment measures at pre-and post-assessment stages (16 weeks intervals). Medical consultants at the respective hospitals diagnosed the patients on the base of their medical reports and then referred those patients to us. Then we used different scales to assess primary and secondary outcomes: Diabetes Distress Scale (DDS) and Patient Health Questionnaire (PHQ) to assess primary outcomes, and a Short Health Anxiety Inventory (SHAI), a Revised Version of the Diabetes Quality of Life Questionnaire (DQLQ), and a General Medication Adherence Scale (GMAS) were used to investigate secondary outcomes. Repeated measure ANOVA was used to analyze the results. RESULTS: The findings indicated that patients who received CBT got a significant reduction in their diabetes distress F(1,60) = 222.710, P < 0.001, η2 = .788), depressive symptoms F(1,60) = 94.436, P < 0.001, η2 = .611), health anxiety F(1,60) = 201.915, P < .0.001, η2 = 771), and a significant improvement in their quality of life F(1,60) = 83.352, P < 0.001, η2 = .581), treatment adherence F(1,60) = 67.579, P < 0.001, η2 = .566) and physical activity schedule F(1,60) = 164.245, P < .0.001, η2 = .736 as compared to the patients in waitlist control condition. CONCLUSION: It is concluded that cognitive behavior therapy is an effective and promising intervention for depressive symptoms, diabetes distress, and health anxiety which also helps the person to promote quality of life, treatment adherence and physical activity.


Asunto(s)
Terapia Cognitivo-Conductual , Diabetes Mellitus Tipo 2 , Humanos , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/terapia , Diabetes Mellitus Tipo 2/psicología , Depresión/complicaciones , Depresión/terapia , Calidad de Vida , Terapia Cognitivo-Conductual/métodos , Ansiedad/complicaciones , Ansiedad/terapia , Resultado del Tratamiento , Cumplimiento y Adherencia al Tratamiento
4.
J Pak Med Assoc ; 72(10): 1968-1970, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-36660983

RESUMEN

OBJECTIVE: To determine the association of body mass index with various primary headache disorders. METHODS: The ambispective study was conducted at the Department of Medicine, Shalamar Institute of Health Sciences, Lahore, Pakistan, from January 2020 to March 2021, and comprised data of patients who presented to outpatient departments of Neurology and Medicine with complaint of recurrent or persistent headaches. Body mass index of each subject at the time of latest headache visit was recorded. A control group of 200 individuals was also raised and the body mass index of its subjects was measured. Headache disorders were classified as per International Classification of Headache Disorders-3 beta criteria. Correlation of frequency of different types of primary headaches with body mass index was explored. Data was analysed using SPSS 20. RESULTS: Of the 400 subjects, 200(50%) each were cases and controls. There were 132(33%) males and 268(67%) females. The overall mean age was 37.4 ±14.7 years and mean body mass index was 27.3 ±5.87kg/m2. Migraine was found in 183(46%) subjects compared to tension-type headache 96(24%). Migraine was more common in subjects with high body mass index (p<0.05). CONCLUSIONS: Primary headaches constitute a significant health problem. Among various risk factors weight-gain is one that can predispose an individual to increased frequency of migraine.


Asunto(s)
Trastornos de Cefalalgia , Trastornos Migrañosos , Cefalea de Tipo Tensional , Masculino , Femenino , Humanos , Adulto Joven , Adulto , Persona de Mediana Edad , Índice de Masa Corporal , Cefalea/epidemiología , Cefalea/complicaciones , Trastornos Migrañosos/epidemiología , Trastornos Migrañosos/complicaciones , Cefalea de Tipo Tensional/epidemiología , Cefalea de Tipo Tensional/complicaciones , Trastornos de Cefalalgia/complicaciones
5.
J Infect Dis ; 211(4): 549-57, 2015 Feb 15.
Artículo en Inglés | MEDLINE | ID: mdl-25225676

RESUMEN

BACKGROUND: Ebolavirus and Marburgvirus cause severe hemorrhagic fever with high mortality and are potential bioterrorism agents. There are no available vaccines or therapeutic agents. Previous clinical trials evaluated transmembrane-deleted and point-mutation Ebolavirus glycoproteins (GPs) in candidate vaccines. Constructs evaluated in this trial encode wild-type (WT) GP from Ebolavirus Zaire and Sudan species and the Marburgvirus Angola strain expressed in a DNA vaccine. METHODS: The VRC 206 study evaluated the safety and immunogenicity of these DNA vaccines (4 mg administered intramuscularly by Biojector) at weeks 0, 4, and 8, with a homologous boost at or after week 32. Safety evaluations included solicited reactogenicity and coagulation parameters. Primary immune assessment was done by means of GP-specific enzyme-linked immunosorbent assay. RESULTS: The vaccines were well tolerated, with no serious adverse events; 80% of subjects had positive enzyme-linked immunosorbent assay results (≥30) at week 12. The fourth DNA vaccination boosted the immune responses. CONCLUSIONS: The investigational Ebolavirus and Marburgvirus WT GP DNA vaccines were safe, well tolerated, and immunogenic in this phase I study. These results will further inform filovirus vaccine research toward a goal of inducing protective immunity by using WT GP antigens in candidate vaccine regimens. CLINICAL TRIALS REGISTRATION: NCT00605514.


Asunto(s)
Vacunas contra el Virus del Ébola/inmunología , Ebolavirus/inmunología , Marburgvirus/inmunología , Vacunas de ADN/inmunología , Adulto , Anticuerpos Antivirales/sangre , Anticuerpos Antivirales/inmunología , Citocinas/sangre , Vacunas contra el Virus del Ébola/administración & dosificación , Vacunas contra el Virus del Ébola/efectos adversos , Ebolavirus/genética , Ensayo de Immunospot Ligado a Enzimas , Femenino , Humanos , Masculino , Marburgvirus/genética , Persona de Mediana Edad , Linfocitos T/inmunología , Vacunas de ADN/administración & dosificación , Vacunas de ADN/efectos adversos , Vacunas Virales/administración & dosificación , Vacunas Virales/efectos adversos , Vacunas Virales/inmunología , Adulto Joven
6.
Lancet ; 384(9959): 2046-52, 2014 Dec 06.
Artículo en Inglés | MEDLINE | ID: mdl-25132507

RESUMEN

BACKGROUND: Chikungunya virus--a mosquito-borne alphavirus--is endemic in Africa and south and southeast Asia and has recently emerged in the Caribbean. No drugs or vaccines are available for treatment or prevention. We aimed to assess the safety, tolerability, and immunogenicity of a new candidate vaccine. METHODS: VRC 311 was a phase 1, dose-escalation, open-label clinical trial of a virus-like particle (VLP) chikungunya virus vaccine, VRC-CHKVLP059-00-VP, in healthy adults aged 18-50 years who were enrolled at the National Institutes of Health Clinical Center (Bethesda, MD, USA). Participants were assigned to sequential dose level groups to receive vaccinations at 10 µg, 20 µg, or 40 µg on weeks 0, 4, and 20, with follow-up for 44 weeks after enrolment. The primary endpoints were safety and tolerability of the vaccine. Secondary endpoints were chikungunya virus-specific immune responses assessed by ELISA and neutralising antibody assays. This trial is registered with ClinicalTrials.gov, NCT01489358. FINDINGS: 25 participants were enrolled from Dec 12, 2011, to March 22, 2012, into the three dosage groups: 10 µg (n=5), 20 µg (n=10), and 40 µg (n=10). The protocol was completed by all five participants at the 10 µg dose, all ten participants at the 20 µg dose, and eight of ten participants at the 40 µg dose; non-completions were for personal circumstances unrelated to adverse events. 73 vaccinations were administered. All injections were well tolerated, with no serious adverse events reported. Neutralising antibodies were detected in all dose groups after the second vaccination (geometric mean titres of the half maximum inhibitory concentration: 2688 in the 10 µg group, 1775 in the 20 µg group, and 7246 in the 40 µg group), and a significant boost occurred after the third vaccination in all dose groups (10 µg group p=0·0197, 20 µg group p<0·0001, and 40 µg group p<0·0001). 4 weeks after the third vaccination, the geometric mean titres of the half maximum inhibitory concentration were 8745 for the 10 µg group, 4525 for the 20 µg group, and 5390 for the 40 µg group. INTERPRETATION: The chikungunya VLP vaccine was immunogenic, safe, and well tolerated. This study represents an important step in vaccine development to combat this rapidly emerging pathogen. Further studies should be done in a larger number of participants and in more diverse populations. FUNDING: Intramural Research Program of the Vaccine Research Center, National Institute of Allergy and Infectious Diseases, and National Institutes of Health.


Asunto(s)
Virus Chikungunya/inmunología , Vacunas Virales/administración & dosificación , Adolescente , Adulto , Anticuerpos Neutralizantes/análisis , Ensayo de Inmunoadsorción Enzimática , Femenino , Humanos , Tolerancia Inmunológica , Masculino , Persona de Mediana Edad , Vacunación
7.
Acta Psychol (Amst) ; 248: 104385, 2024 Jul 04.
Artículo en Inglés | MEDLINE | ID: mdl-38968810

RESUMEN

Even though existing literature frequently finds High Performance Human Resource Practices' (HPHRPs) positive impact on job performance in organizational setting, still it remains short to study unexplored underlying methods by which High Performance Human Resource Practices (HPHRPs) affect employee job performance. This gap is filled by our research, which proposes psychological empowerment as a mediator in the aforementioned relationship. Based on signaling theory, the present study examines the mediating role of psychological empowerment (PE) in the relationship between high-performance human resource practices (HPHRPs) and job performance (JP). In addition, this study tests the interactive effect of HPHRPs and responsible leadership on psychological empowerment. Data were collected in three waves from representative sample of education sector employees and their supervisors (T1-557, T2-342, T3-210 responses) in Pakistan. The hypotheses were evaluated using the PROCESS macro with SPSS to measure moderated-mediated relationships. The findings of the study reveal that HPHRPs positively influence employee performance through psychological empowerment. Responsible leadership positively moderates HPHRPs' effects on psychological empowerment. Furthermore, responsible leadership moderates the mediated relationship such that this positive indirect effect is stronger for individuals possessing low levels of responsible leadership. Our study is the first of its type to investigate whether a responsible leader may moderate the indirect impact of HPHRPs on JP through psychological empowerment. The findings carry critical implications for the practitioners and academics to devise interventions for better work environments.

8.
Heliyon ; 9(11): e22058, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-38034757

RESUMEN

This study aimed to compare the styles of leadership practices of female leaders in public and private Universities in Pakistan. In this study, both quantitative and qualitative data were collected using a mixed-method approach. An adapted and developed questionnaire was used for quantitative data collection, whereas qualitative data were collected through a semi-structured interview schedule. A sample of 200 female leaders was selected for quantitative data collection, while 10 females from the said sample were selected for qualitative data collection through a simple random method. Quantitative data were analyzed using SPSS, whereas qualitative data were analyzed using thematic analysis. Based on the statistical results, this study discovered statistically significant differences in female transformational and transactional leadership styles and significant differences in job performance based on the university sector. This study discovered statistically insignificant differences based on the different positions of female leaders regarding transformational and transactional leadership, and job performance. Moreover, qualitative data revealed that female leaders clearly understood both leadership styles and how to improve job performance by practicing them. The originality of this study concerns the identification of the differences between leadership styles (transformational and transactional) practiced by female leaders of public and private Universities in Pakistan and explains female leaders' perceptions of the role of leadership styles in their job performance.

10.
Heliyon ; 9(3): e14611, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36994386

RESUMEN

Self-Serving leadership is a global phenomenon and requires both literary and practical attention to understand how it unfolds and impacts organizations. More specifically the investigation of this underexplored dark side of leadership in Pakistani service sector organizations has its unique significance. So, in this regard, the current study took the initiative to investigate the relationship between a Leader's self-serving behaviour and a follower's self-serving counterproductive work behaviour. Moreover, the underlying mechanism of self-serving cognitive distortions was proposed, with followers' Machivellianism strengthening the indirect relationship between leaders' self-serving behaviour with self-serving counterproductive work behaviour through the self-serving cognitive distortions. The proposed theoretical framework was explained by the Social Learning theory. This study adopted a survey method with the collection of data by utilizing the convenience sampling method, in three-time waves with peer-reported self-serving counterproductive work behaviours. The data was analyzed by utilizing confirmatory factor analysis to establish discriminant and convergent validity. Moreover, the hypotheses testing was done utilizing Hayes Process Macro 4 (Mediation) and 7(Moderated Mediation). The results proved that the self-serving cognitive distortions mediated the relationship between the leader's self-serving behaviour and the follower's self-serving counterproductive work behaviours. Moreover, it was established that the High Mach tendencies strengthed the indirect positive relationship between a leader's self-serving behaviour with self-serving counterproductive work behaviour through the self-serving cognitive distortions. It is important to note that the current study provides a view to the practitioners that formulation of effective policies and systems for identifying and discouraging the tendencies of Leaders' self-serving behaviour and employing people with low Mach Tendencies can avoid the self-serving counterproductive work behaviours harming the overall welfare of the organization.

11.
J Pediatric Infect Dis Soc ; 12(4): 234-238, 2023 Apr 28.
Artículo en Inglés | MEDLINE | ID: mdl-36929216

RESUMEN

In this ongoing study, substantially increased ancestral SARS-CoV-2 neutralizing responses were observed 1 month after a third 10-µg BNT162b2 dose given to 5 to 11-year olds versus neutralizing responses post-dose 2. After dose 3, increased neutralizing responses against Omicron BA.1 and BA.4/BA.5 strains were also observed. The safety/tolerability profile was acceptable. (NCT04816643).


Asunto(s)
Vacuna BNT162 , COVID-19 , Humanos , Anticuerpos Antivirales , COVID-19/prevención & control , Inmunogenicidad Vacunal , SARS-CoV-2 , Vacunas de ARNm
12.
Mol Cell Proteomics ; 9(7): 1540-53, 2010 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-20363803

RESUMEN

Seven-transmembrane receptors (7TMRs) signal through the well described heterotrimeric G proteins but can also activate G protein-independent signaling pathways of which the impact and complexity are less understood. The angiotensin II type 1 receptor (AT(1)R) is a prototypical 7TMR and an important drug target in cardiovascular diseases. "Biased agonists" with intrinsic "functional selectivity" that simultaneously blocks Galpha(q) protein activity and activates G protein-independent pathways of the AT(1)R confer important perspectives in treatment of cardiovascular diseases. In this study, we performed a global quantitative phosphoproteomics analysis of the AT(1)R signaling network. We analyzed ligand-stimulated SILAC (stable isotope labeling by amino acids in cell culture) cells by high resolution (LTQ-Orbitrap) MS and compared the phosphoproteomes of the AT(1)R agonist angiotensin II and the biased agonist [Sar(1),Ile(4),Ile(8)]angiotensin II (SII angiotensin II), which only activates the Galpha(q) protein-independent signaling. We quantified more than 10,000 phosphorylation sites of which 1183 were regulated by angiotensin II or its analogue SII angiotensin II. 36% of the AT(1)R-regulated phosphorylations were regulated by SII angiotensin II. Analysis of phosphorylation site patterns showed a striking distinction between protein kinases activated by Galpha(q) protein-dependent and -independent mechanisms, and we now place protein kinase D as a key protein involved in both Galpha(q)-dependent and -independent AT(1)R signaling. This study provides substantial novel insight into angiotensin II signal transduction and is the first study dissecting the differences between a full agonist and a biased agonist from a 7TMR on a systems-wide scale. Importantly, it reveals a previously unappreciated diversity and quantity of Galpha(q) protein-independent signaling and uncovers novel signaling pathways. We foresee that the amount and diversity of G protein-independent signaling may be more pronounced than previously recognized for other 7TMRs as well. Quantitative mass spectrometry is a promising tool for evaluation of the signaling properties of biased agonists to other receptors in the future.


Asunto(s)
Subunidades alfa de la Proteína de Unión al GTP Gq-G11 , Fosfoproteínas/análisis , Proteoma/análisis , Receptor de Angiotensina Tipo 1 , Secuencia de Aminoácidos , Línea Celular , Subunidades alfa de la Proteína de Unión al GTP Gq-G11/antagonistas & inhibidores , Subunidades alfa de la Proteína de Unión al GTP Gq-G11/metabolismo , Humanos , Espectrometría de Masas/métodos , Datos de Secuencia Molecular , Receptor de Angiotensina Tipo 1/agonistas , Receptor de Angiotensina Tipo 1/metabolismo , Transducción de Señal/fisiología
13.
PLoS One ; 17(5): e0266363, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35587507

RESUMEN

Mathematics plays a leading part in day-to-day life and has enhanced a necessary component for human accomplishments. Students from many countries do not reach the expected level in mathematics. Therefore, it is essential to pay close consideration to the causes related to ability in mathematics. Mathematics attitude is considered as one of the critical variables in the process of mathematics learning. This study aimed to determine students' attitudes and achievements through problem-based learning in mathematics. The selected study group contained 600 students and 35 teachers from rural public secondary schools in District Rawalpindi, Pakistan. The data collection was done using questionnaires from students and teachers and collected data analyzed by SPSS 23 and Amos 23. This study's result was carried out using Partial Least square structural equation Model (PLS-SEM), descriptive analysis, and hypotheses testing. The outcomes in this study indicated that the mean fluctuated between 1 to 4.5, 3.71 to 4.20, and Std. Deviation fluctuated between 0.6 to 2.0 and 0.75 to 1.55 in the students and teacher models, respectively. The results of the PLS-SEM students' model show a negative attitude towards mathematics. The teachers' PLS-SEM model showed the Effects of using problem-based learning (PBL) on students' achievements. According to the hypotheses testing, the acceptance of hypotheses by stating that the Confidence in Learning Mathematics Scale (C), Value of Mathematics Scale (V), and Student Mathematics Motivation Scale (M) are significant effects for the Students' Attitude Toward Problem-Based Learning (ATPBL). But the Attitude Toward Enjoyment in Mathematics Scale (AE) was rejected, and it did not significantly affect the ATPBL. As well as, the Problem-solving learning and students' achievement (PLA), Advantages of problem-solving learning (APL) and Difficulties in using problem-solving learning (DPL) have a significant positive effect on the ATPBL. Finally, this study suggested that teachers also adopt new teaching methods corresponding to mathematics, and there is a need to explore particular mathematics skills to enhance students' learning abilities.


Asunto(s)
Logro , Aprendizaje Basado en Problemas , Actitud , Humanos , Análisis de los Mínimos Cuadrados , Matemática
14.
Front Psychol ; 13: 1084963, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36698565

RESUMEN

The present study sifts the indirect role of psychological capital (PsyCap) in linking authentic leadership (AL) and job performance (JP). Furthermore, this study investigates the interplay of AL and perceived organizational support (POS) in PsyCap. We tested these assumptions through PROCESS macro with two sources of data collected from 350 employees and their respective colleagues working in education sector organizations in China. The study findings established that AL positively influences employee performance directly and indirectly through PsyCap. POS moderates the effects of AL on PsyCap such that this relationship gets more pronounced in individuals with high levels of POS. All organizations in the education sector can benefit from the current study's practical application. We recommend that firms create and implement these training programs to improve JP since AL is favorably correlated with JP. The organization should pick executives with a vision to encourage e-JP. To promote this behavior, firms can also hold management training seminars, conferences, and programs. Making performance a clear necessity within job criteria will encourage it among personnel. To achieve great results, top management and leadership must inform the workforce about the importance of authentic behavior in the workplace.

15.
Front Psychol ; 13: 919693, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36186375

RESUMEN

In this study, we examined the impact of principals' leadership style on the performance of teachers at the college level. For this purpose, we collect data from 300 college teachers via a random sampling approach. A self-administrated questionnaire (five-point Likert Scale) was used to collect data. For detecting relationships and differences among the opinions of the study's participants, correlation and the t-test were used. This study has revealed that the majority of college principals practice a democratic style of leadership at a higher level, Laissez-faire at a moderate level, and autocratic at a low level in their colleges. Moreover, it has been also revealed that when principals increase the use of a democratic leadership style, teacher performance may progress as well. The findings revealed that principals' leadership style had a positive impact on the performance of teachers. The study exposed a strong statistically positive relationship between college principals' leadership style and teacher performance. Thus, the results of this study suggest that college principals' should adopt the leadership style according to the level of teachers. The leadership style should be changed with specific situations in the colleges.

16.
PLoS One ; 17(5): e0266956, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35552545

RESUMEN

Leadership plays a significant role in the performance of individuals and organizations. This paper investigates the impact of leadership styles on the innovative performance of female leaders in Pakistani Universities using a survey approach. This paper aimed to (a) discover a leadership style practiced by females and (b) discover the relationship between leadership style and the innovative performance of female leaders. Several female leaders, including faculty members, heads of departments, deans, coordinators, and directors, from public and private universities of Punjab (a province of Pakistan), were involved in this study. A sample of one hundred female leaders was selected using a multistage sampling method. In the first stage, five public and five private sector universities were selected through a simple random method. In the second stage, ten female leaders (five from each of the social science and basic science departments) were selected from each university through a purposive sampling method. The researchers adopted a reliable instrument to collect the survey data. The collected data were analyzed using SPSS (Version 26). Mean scores and Pearson correlation coefficients were used to discover the relationship between various variables. The investigation revealed that most female leaders practice the transactional leadership style in their universities. This study also discovered a moderate positive relationship between both leadership styles, namely transactional and transformational, and innovative performance. The study recommends that various workshops and seminars may be conducted to increase the practices of both leadership styles to enhance innovation in Pakistani Universities.


Asunto(s)
Satisfacción en el Trabajo , Liderazgo , Estudios Transversales , Femenino , Humanos , Pakistán , Encuestas y Cuestionarios , Universidades
17.
Open Forum Infect Dis ; 8(7): ofab182, 2021 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-34322562

RESUMEN

BACKGROUND: Infection is a leading cause of admission to intensive care units (ICUs), with critically ill patients often receiving empiric broad-spectrum antibiotics. Nevertheless, a dedicated infectious diseases (ID) consultation and stewardship team is not routinely established. An ID-critical care medicine (ID-CCM) pilot program was designed at a 400-bed tertiary care hospital in which an ID attending was assigned to participate in daily rounds with the ICU team, as well as provide ID consultation on select patients. We sought to evaluate the impact of this dedicated ID program on antibiotic utilization and clinical outcomes in patients admitted to the ICU. METHODS: In this single-site retrospective study, we analyzed antibiotic utilization and clinical outcomes in patients admitted to an ICU during the postintervention period from January 1 to December 31, 2017, and compared it to antibiotic utilization in the same ICUs during the preintervention period from January 1 to December 31, 2015. RESULTS: Our data showed a statistically significant reduction in usage of most frequently prescribed antibiotics including vancomycin, piperacillin-tazobactam, and cefepime during the intervention period. When compared to the preintervention period there was no difference in-hospital mortality, hospital length of stay, and readmission. CONCLUSIONS: With this multidisciplinary intervention, we saw a decrease in the use of the most frequently prescribed broad-spectrum antibiotics without a negative impact on clinical outcomes. Our study shows that the implementation of an ID-CCM service is a feasible way to promote antibiotic stewardship in the ICU and can be used as a strategy to reduce unnecessary patient exposure to broad-spectrum agents.

18.
JCI Insight ; 6(4)2021 02 22.
Artículo en Inglés | MEDLINE | ID: mdl-33476300

RESUMEN

Convalescent plasma with severe acute respiratory disease coronavirus 2 (SARS-CoV-2) antibodies (CCP) may hold promise as a treatment for coronavirus disease 2019 (COVID-19). We compared the mortality and clinical outcome of patients with COVID-19 who received 200 mL of CCP with a spike protein IgG titer ≥ 1:2430 (median 1:47,385) within 72 hours of admission with propensity score-matched controls cared for at a medical center in the Bronx, between April 13 and May 4, 2020. Matching criteria for controls were age, sex, body mass index, race, ethnicity, comorbidities, week of admission, oxygen requirement, D-dimer, lymphocyte counts, corticosteroid use, and anticoagulation use. There was no difference in mortality or oxygenation between CCP recipients and controls at day 28. When stratified by age, compared with matched controls, CCP recipients less than 65 years had 4-fold lower risk of mortality and 4-fold lower risk of deterioration in oxygenation or mortality at day 28. For CCP recipients, pretransfusion spike protein IgG, IgM, and IgA titers were associated with mortality at day 28 in univariate analyses. No adverse effects of CCP were observed. Our results suggest CCP may be beneficial for hospitalized patients less than 65 years, but data from controlled trials are needed to validate this finding and establish the effect of aging on CCP efficacy.


Asunto(s)
Anticuerpos Neutralizantes/administración & dosificación , Anticuerpos Antivirales/administración & dosificación , COVID-19/terapia , SARS-CoV-2/inmunología , Adulto , Factores de Edad , Anciano , Anciano de 80 o más Años , Anticuerpos Neutralizantes/sangre , Anticuerpos Neutralizantes/inmunología , Anticuerpos Antivirales/sangre , Anticuerpos Antivirales/inmunología , COVID-19/inmunología , COVID-19/mortalidad , COVID-19/virología , Femenino , Mortalidad Hospitalaria , Humanos , Inmunización Pasiva/métodos , Masculino , Persona de Mediana Edad , Ciudad de Nueva York/epidemiología , Puntaje de Propensión , Estudios Retrospectivos , Glicoproteína de la Espiga del Coronavirus/inmunología , Resultado del Tratamiento , Sueroterapia para COVID-19
19.
medRxiv ; 2020 Dec 04.
Artículo en Inglés | MEDLINE | ID: mdl-33300012

RESUMEN

Convalescent plasma with severe acute respiratory disease coronavirus 2 (SARS-CoV-2) antibodies (CCP) may hold promise as treatment for Coronavirus Disease 2019 (COVID-19). We compared the mortality and clinical outcome of patients with COVID-19 who received 200mL of CCP with a Spike protein IgG titer ≥1:2,430 (median 1:47,385) within 72 hours of admission to propensity score-matched controls cared for at a medical center in the Bronx, between April 13 to May 4, 2020. Matching criteria for controls were age, sex, body mass index, race, ethnicity, comorbidities, week of admission, oxygen requirement, D-dimer, lymphocyte counts, corticosteroids, and anticoagulation use. There was no difference in mortality or oxygenation between CCP recipients and controls at day 28. When stratified by age, compared to matched controls, CCP recipients <65 years had 4-fold lower mortality and 4-fold lower deterioration in oxygenation or mortality at day 28. For CCP recipients, pre-transfusion Spike protein IgG, IgM and IgA titers were associated with mortality at day 28 in univariate analyses. No adverse effects of CCP were observed. Our results suggest CCP may be beneficial for hospitalized patients <65 years, but data from controlled trials is needed to validate this finding and establish the effect of ageing on CCP efficacy.

20.
Open Forum Infect Dis ; 6(12): ofz487, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32128330

RESUMEN

We engaged medical students with antimicrobial stewardship (AS) and antimicrobial resistance (AMR) through patient stories and a panel on AMR advocacy with experts from the Centers for Disease Control and Prevention and the Infectious Diseases Society of America. Students were surveyed on their perceptions about AS and AMR (response rate = 139 of 166, 84%).

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