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Lu H, Chen X, Leung FKS, Zuo H. Reliability, validity, and measurement invariance of a Chinese handwriting legibility scale among primary students in central China. Front Psychol 2023; 14:1050894. [PMID: 37575435 PMCID: PMC10422027 DOI: 10.3389/fpsyg.2023.1050894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 07/03/2023] [Indexed: 08/15/2023] Open
Abstract
Background Chinese handwriting has a close relationship with spatial cognition, and the legibility dimension is prominent with its spatial-oriented characteristics. However, handwriting evaluation focusing on the detailed spatial aspects of the legibility dimension in the Chinese context is rare. Aims and methods We aimed to develop a Chinese Handwriting Legibility Scale (CHLS) and examine its reliability, validity, and measurement invariance among Chinese primary students of different grades. A total of 684 students aged 8-12 years were recruited from a mainstream primary school in central China and were asked to copy a Chinese template as legibly as possible within 4 min. The developed CHLS was used to assess these students' legibility performance. Results The seven-criteria CHLS favored content validity. The inter-rater reliability was good; however, the scoring instructions need to be refined. Principal component analysis (PCA) revealed a one-factor solution explaining 62.336% of the variance of the seven-criteria CHLS, and confirmatory factor analysis (CFA) confirmed its appropriateness. There was a high internal consistency (α = 0.902). In terms of measurement invariance, the factor structures and loadings of the CHLS were consistent across students of different grades; however, significant intercept variations were detected between students of Grades 2 and 4. Conclusion CHLS may be effective for evaluating Chinese handwriting legibility performance in the Chinese primary school context in the central region. Students' Chinese handwriting legibility performance may have developmental specificity in different grades.
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Affiliation(s)
- Hong Lu
- Faculty of Education, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Xin Chen
- Faculty of Education, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | | | - Haode Zuo
- College of Mathematical Science, Yangzhou University, Yangzhou, Jiangsu, China
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Kausar MN, Fitriana E, Khairunnisa K, Faruque MO, Bahar MA, Alfian SD, Pradipta IS. Development and Validation of the Knowledge, Attitude, and Practice Questionnaire for Community Pharmacy Personnel in Tuberculosis Case Detection, Drug Monitoring, and Education: A Study from Indonesia. Infect Drug Resist 2023; 16:3729-3741. [PMID: 37333684 PMCID: PMC10276589 DOI: 10.2147/idr.s409107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 06/02/2023] [Indexed: 06/20/2023] Open
Abstract
Background Validated and standardized structured questionnaires based on psychometric analysis are extremely limited, particularly for assessing community pharmacy personnel's knowledge, attitude, and practice (KAP) in tuberculosis (TB) case detection, drug monitoring, and education. We, therefore, developed and validated a questionnaire to assess the KAP of community pharmacy personnel in TB case detection, drug monitoring, and community education. Methods This study was conducted in two phases. First, we developed the questionnaire, which included framework development, item generation, individual item content validity index (I-CVI), item screening, and pre-testing. Second, we validated the questionnaire with 400 participants using various analyses, including participant analysis, confirmatory factor analysis (CFA), adjusted goodness-of-fit index (AGFI), comparative fit index (CFI), non-normed fit index (NNFI), root mean square error of approximation (RMSEA), and standardized root mean square residual (SRMR). We determined the reliability test using Cronbach's alpha and test-retest reliability using Pearson's correlation. Results In the development phase, we defined 63 items that comprised 18 sociodemographic, 18 knowledge, 18 attitude, and 9 practice items. Across the 63 items, the I-CVI scores of sociodemographic and KAP items were one each. The CFA model parameter values were X2/df= 2.28; AGFI = 0.95; CFI = 0.99; NNFI = 0.98; RMSEA = 0.06; and SRMR = 0.03 (p < 0.05 for all). Cronbach's alpha coefficients of KAP items were 0.75, 0.91, and 0.95, respectively. The test-retest reliability coefficients of KAP were 0.84, 0.55, and 0.91, respectively (p < 0.01). Conclusion This study indicates that the developed questionnaire is a valid and reliable instrument for assessing the KAP of community pharmacy personnel for TB case detection, drug monitoring, and community education in Indonesia. Community pharmacy personnel can support TB notification and treatment by assessing their prospective roles in surveys using this questionnaire, enabling TB eradication in 2030.
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Affiliation(s)
- Mersa Nurain Kausar
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Bandung, Indonesia
- Master of Clinical Pharmacy Program, Faculty of Pharmacy, Universitas Padjadjaran, Bandung, Indonesia
- Drug Utilization and Pharmacoepidemiology Research Group, Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Bandung, Indonesia
- Occupational Health – Regional Public Hospital, West Java Provincial Government, Bandung, Indonesia
| | - Efi Fitriana
- Department of General Psychology and Experiment, Faculty of Psychology, Universitas Padjadjaran, Bandung, Indonesia
| | | | - Md Omar Faruque
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, MO, USA
| | - Muh Akbar Bahar
- Department of Pharmacy, Faculty of Pharmacy, Universitas Hasanuddin, Makassar, Indonesia
| | - Sofa D Alfian
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Bandung, Indonesia
- Drug Utilization and Pharmacoepidemiology Research Group, Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Bandung, Indonesia
| | - Ivan Surya Pradipta
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Bandung, Indonesia
- Drug Utilization and Pharmacoepidemiology Research Group, Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Bandung, Indonesia
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Lee SM, Horino H. Psychometric Support for a Japanese Version of the Sport Imagery Ability Questionnaire. Percept Mot Skills 2023; 130:461-484. [PMID: 36242095 DOI: 10.1177/00315125221134314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this two-part study, we addressed psychometric properties of the Japanese version of the Sport Imagery Ability Questionnaire (SIAQ-J). We analyzed the SIAQ-J factor structure, assessed gender, competitive level, sport type and years of experience differences on the SIAQ-J, and we investigated whether the SIAQ-J was predicted by goal clarity. In Study 1, we translated the original SIAQ (15 items) into Japanese and performed an exploratory factor analysis (n = 366). In Study 2 (n = 422), we verified the measurement model established in Study 1 with exploratory factor analysis (EFA). Study 1 found five exploratory factors-skill, strategy, goal, affect and mastery imagery-and these were confirmed through the confirmatory factor analysis (CFA) conducted in Study 2. Structural equation modelling supported a model wherein goal clarity positively predicted all SIAQ-J subscales. This study provided additional validation of the original SIAQ. Overall, the SIAQ-J demonstrated good factorial validity, temporal reliability and gender invariance and discriminated among athletes of different competitive levels and years of experience.
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Affiliation(s)
- Seung-Min Lee
- Graduate School of Sport Sciences, 13148Waseda University, Tokyo, Japan
| | - Hiroyuki Horino
- Faculty of Sport Sciences, 13148Waseda University, Tokyo, Japan
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Karvay YG, Guarecuco JS, Feuerstahler L, Burke NL. Development and validation of the food availability and related eating behaviors questionnaire: A stage 1 registered report. Int J Eat Disord 2022; 55:1404-1410. [PMID: 36184904 DOI: 10.1002/eat.23797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 07/28/2022] [Accepted: 07/28/2022] [Indexed: 11/07/2022]
Abstract
OBJECTIVE Historically, eating disorder research has excluded marginalized and underserved populations, such as those with food insecurity (which also impacts higher numbers of Black/African American and Latinx communities). However, burgeoning research suggests an association between food insecurity and the development of eating disorder pathology. Examining patterns of food availability and related eating behaviors may elucidate the association between food insecurity and eating disorder pathology. However, to date, there are no comprehensive measures that accurately capture food availability patterns and related eating behaviors. METHOD In Study 1, 40 participants (20 adolescents, 20 adults) will respond to and provide qualitative feedback on the Food Availability and Related Eating Behaviors Questionnaire (FAREB-Q). In study 2, 50 participants (approximately 25 with and without food insecurity) will complete the FAREB-Q at two time-points, and respond to questions about food insecurity, disordered eating, and every day stress to assess the FAREB-Q's reliability and validity. RESULTS Results will clarify whether the FAREB-Q is a reliable and valid instrument that measures food availability and related eating behavior patterns. DISCUSSION The present study aims to develop, pilot, and examine the psychometric properties of the FAREB-Q, a self-report measure examining food availability and related eating behaviors in community populations. PUBLIC SIGNIFICANCE The novel FAREB-Q assesses food availability and related eating patterns in the general community. The FAREB-Q will be reviewed by experts in disordered eating, food insecurity, psychometric statisticians and piloted in the general public before being psychometrically evaluated in a larger sample. The FAREB-Q is anticipated to help elucidate the mechanisms linking food availability, food (in)security, disordered eating behaviors, and eating pathology.
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Affiliation(s)
- Yvette G Karvay
- Department of Psychology, Fordham University, New York, New York, USA
| | | | - Leah Feuerstahler
- Department of Psychology, Fordham University, New York, New York, USA
| | - Natasha L Burke
- Department of Psychology, Fordham University, New York, New York, USA
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Wang L, Zhao YT. Development and Validation of a Prediction Model for Irreversible Worsened Cardiac Function in Patients With Acute Decompensated Heart Failure. Front Cardiovasc Med 2021; 8:785587. [PMID: 34957263 PMCID: PMC8702716 DOI: 10.3389/fcvm.2021.785587] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/19/2021] [Indexed: 12/23/2022] Open
Abstract
Background: Irreversible worsening of cardiac function is an adverse event associated with significant morbidity among patients with acute decompensated heart failure (ADHF). We aimed to develop a parsimonious model which is simple to use in clinical settings for the prediction of the risk of irreversible worsening of cardiac function. Methods: A total of 871 ADHF patients were enrolled in this study. Data for each patient were collected from the medical records. Irreversible worsening of cardiac function included cardiac death within 30-days of patient hospitalization, implantation of a left ventricular assistance device, or emergency heart transplantation. We performed LASSO regression for variable selection to derive a multivariable logistic regression model. Five candidate predictors were selected to derive the final prediction model. The prediction model was verified using C-statistics, calibration curve, and decision curve. Results: Irreversible worsening of cardiac function occurred in 7.8% of the patients. Advanced age, NYHA class, high blood urea nitrogen, hypoalbuminemia, and vasopressor use were its strongest predictors. The prediction model showed good discrimination C-statistic value, 0.866 (95% CI, 0.817-0.907), which indicated good identical calibration and clinical efficacy. Conclusion: In this study, we developed a prediction model and nomogram to estimate the risk of irreversible worsening of cardiac function among ADHF patients. The findings may provide a reference for clinical physicians for detection of irreversible worsening of cardiac function and enable its prompt management.
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Affiliation(s)
- Lei Wang
- Department of Cardiology, Aerospace Center Hospital, Beijing, China
| | - Yun-Tao Zhao
- Department of Cardiology, Aerospace Center Hospital, Beijing, China
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Turcu-Stiolica A, Doica IP, Ungureanu BS, Rogoveanu I, Florescu DN, Subtirelu MS, Gheonea DI. Development and Validation of a Questionnaire to Measure Medication Adherence to Direct-Acting Agents in Patients with Hepatitis C. Pharmaceutics 2021; 13:1683. [PMID: 34683976 DOI: 10.3390/pharmaceutics13101683] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/09/2021] [Accepted: 10/12/2021] [Indexed: 01/21/2023] Open
Abstract
This study aims to develop a new self-report tool (HCV-AD) measuring adherence factors, intentional or unintentional, during Hepatitis C Virus (HCV) treatment with direct-acting antivirals (DAA) aiming to achieve high efficacy, otherwise resulting in drug resistance and treatment failure. Two phases were conducted: in the first phase, items were generated based on an extensive literature review, and, in the second phase, a prospective cohort study was conducted using HCV patients from Gastroenterology Department from University County Hospital of Craiova, Romania (n = 222), to evaluate the validity and reliability of the questionnaire. A number of 19 items were generated following a systematic review and through expert opinion. The internal consistency reliability was evaluated using Cronbach’s alpha. The construct validity was assessed using correlations with two other instruments: visual analog scale (VAS) and medication possession ratio (MPR). The final questionnaire (HCV-AD10) was derived through exploratory factor analysis, with 82% of total variance explained. This instrument appeared as a reliable and valid measure for medication adherence, with Cronbach’s alpha (0.867) and significant high positive correlations between adherence scores calculated with HCV-AD10 and VAS (ρ = 0.61, p < 0.001) or with HCV-AD10 and MPR (ρ = 0.75, p < 0.001). This research would make a worthwhile contribution to HCV management.
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Chapman JL, Hoyos CM, Killick R, Sutherland K, Cistulli PA, Zwar N, Yee BJ, Marks G, Grunstein RR, Wong KKH. Development and validation of a model for diagnosis of obstructive sleep apnoea in primary care. Respirology 2021; 26:989-996. [PMID: 34342088 DOI: 10.1111/resp.14122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 06/08/2021] [Accepted: 07/13/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVE Use of in-laboratory polysomnography (PSG) to diagnose obstructive sleep apnoea (OSA) is cost and resource intensive. Questionnaires, physical measurements and home monitors have been studied as potential simpler alternatives. This study aimed to develop a diagnostic model for OSA for use in primary care. METHODS Primary care practitioners were trained to recognize symptoms of sleep apnoea and recruited patients based on the clinical need to investigate OSA. Assessment was by symptom questionnaires, anthropomorphic measurements, digital facial photography, and a single-channel nasal flow monitor (Flow Wizard©, DiagnoseIT, Sydney, Australia) worn at home for 3 nights. The in-laboratory PSG was the reference test, with OSA defined as apnoea-hypopnoea index (AHI) ≥10 events/h. RESULTS In the model development phase, 25 primary care practitioners studied 315 patients in whom they suspected OSA, of which 57% had AHI≥10 and 22% had AHI≥30. Published OSA questionnaires provided low to moderate prediction of OSA (area under the curve [AUC] 0.53-0.73). The nasal flow monitor alone yielded high accuracy for predicting OSA with AUC of 0.87. Sensitivity was 0.87 and specificity 0.77 at a threshold respiratory event index (REI) of 18 events/h. A model adding age, gender, symptoms and BMI to the nasal flow monitor REI only modestly improved OSA prediction (AUC 0.89), with similar AUC (0.88) confirmed in the validation population of 114 patients. CONCLUSION Sleep apnoea can be diagnosed in the primary care setting with a combination of clinical judgement and portable monitor test outcomes.
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Affiliation(s)
- Julia L Chapman
- Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, New South Wales, Australia.,School of Psychology and Brain and Mind Centre, University of Sydney, Sydney, New South Wales, Australia
| | - Camilla M Hoyos
- Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, New South Wales, Australia.,School of Psychology and Brain and Mind Centre, University of Sydney, Sydney, New South Wales, Australia
| | - Roo Killick
- Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, New South Wales, Australia
| | - Kate Sutherland
- Charles Perkins Centre, University of Sydney, Sydney, New South Wales, Australia
| | - Peter A Cistulli
- Charles Perkins Centre, University of Sydney, Sydney, New South Wales, Australia.,Department of Respiratory and Sleep Medicine, Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - Nick Zwar
- Faculty of Health Sciences & Medicine, Bond University, Gold Coast, Queensland, Australia
| | - Brendon J Yee
- Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, New South Wales, Australia.,Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia
| | - Guy Marks
- South Western Sydney Clinical School, University of New South Wales, New South Wales, Australia
| | - Ronald R Grunstein
- Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, New South Wales, Australia.,Charles Perkins Centre-Royal Prince Alfred Clinic, Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia
| | - Keith K H Wong
- Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, New South Wales, Australia.,Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia
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Moitra P, Verma P, Madan J. Development and validation of a questionnaire measuring knowledge, attitudes, and practices (KAP) to healthy eating and activity patterns in school children (HEAPS). Nutr Health 2021; 27:199-209. [PMID: 33522877 DOI: 10.1177/0260106020982356] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
BACKGROUND Development of culturally appropriate and psychometrically sound instruments that measure knowledge and health behaviors of children will help to inform appropriate interventions. AIM To develop and test the validity and reliability of a questionnaire measuring knowledge, attitudes, and practices to healthy eating and activity patterns in school children in India. METHODS Review of literature, focus-group discussions, and theoretical constructs of the Health Belief Model guided the development of an item pool. Face and content validity were assessed by children and a panel of experts and the item content validity, item difficulty, and discrimination indices were calculated. Construct validity was determined using the principal axis method of exploratory factor analysis among a cross-sectional sample of children (n=252). Internal consistency (Cronbach α values >0.7) and test-retest reliability (intraclass correlation coefficient values >0.75) were estimated. RESULTS Item content validity index for clarity and relevance were satisfactory (>0.80) and internal consistency for knowledge (Kuder-Richardson 20 = 0.832), attitude (Cronbach's α = 0.912), and practice items (Cronbach's α = 0.769) were good. Four factors (children's eating habits, family dietary practices, and consumption of healthy and unhealthy foods) and two factors (moderate to vigorous activities and sedentary activities) explained 67.7% and 48.2% of the total variance in practice items. Intraclass correlation coefficient estimates ranged from good to excellent (0.72-0.99). CONCLUSIONS The results of the validity and reliability of the 84-item knowledge, attitudes, and practices to healthy eating and activity patterns in schoolchildren questionnaire were promising. The detailed description of the methodology employed may prove useful to researchers conducting similar studies in children.
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Affiliation(s)
- Panchali Moitra
- Department of Food, Nutrition & Dietetics, 210967Sir Vithaldas Thackersey College of Home Science (Autonomous), Shreemati Nathibai Damodar Thackersey Women's University, Mumbai, India
| | - Preeti Verma
- Department of Special Education, Associate Dean, Interdisciplinary Studies, 29551Shreemati Nathibai Damodar Thackersey Women's University, Mumbai, India
| | - Jagmeet Madan
- Department of Food, Nutrition & Dietetics, 210967Sir Vithaldas Thackersey College of Home Science (Autonomous), Shreemati Nathibai Damodar Thackersey Women's University, Mumbai, India
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Song T, Yin S, Jiang Y, Huang Z, Liu J, Wang Z, Li L, Zeng J, Fan Y, Wang X, Li X, Lin T. Increasing Time in Therapeutic Range of Tacrolimus in the First Year Predicts Better Outcomes in Living-Donor Kidney Transplantation. Front Immunol 2019; 10:2912. [PMID: 31921171 PMCID: PMC6933438 DOI: 10.3389/fimmu.2019.02912] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 11/27/2019] [Indexed: 02/05/2023] Open
Abstract
Background: The aim of the present study was to investigate the impact of time in therapeutic range TTR on long-term outcomes of living kidney transplants. Methods: We included 1,241 living kidney transplants and randomized them into development and validation cohorts with a ratio of 2:1. The tacrolimus TTR percentage was calculated by linear interpolation with a target range (5–10 ng/ml months 0–3, 4–8 ng/ml months 4–12). The optimal TTR cutoff was estimated by the receiver operating characteristic curve analysis on the basis of acute rejection (AR) within 12 months in the development cohort. Outcomes were analyzed between patients with high TTR and low TTR in the development and validation cohorts, respectively. The TTR was also compared with other tacrolimus measures. Results: The optimal TTR cutoff value was 78%. In the development cohort, patients with TTR > 78% had significantly higher rejection- and infection-free survival. TTR < 78% was an independent risk factor for AR (OR: 2.97, 95%CI: 1.82–4.84) and infection (OR: 1.55, 95%CI: 1.08–2.22). Patient and graft survival were significantly higher in those with TTR>78%, and TTR<78% was associated with graft loss (OR: 3.2, 95%CI: 1.38–7.42) and patient death (OR: 6.54, 95%CI: 1.34–31.77). These findings were confirmed in the validation cohort. Furthermore, we divided all included patients into a high and low TTR group. TTR was more strongly associated with patient and graft survival than mean level, standard deviation, and intrapatient variability (IPV). Conclusions: Increasing the TTR of tacrolimus in the first year was associated with improved long-term outcomes in living kidney transplants, and TTR may be a novel valuable strategy to monitor tacrolimus exposure.
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Affiliation(s)
- Turun Song
- Urology Department, Urology Research Institute, Organ Transplantation Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Saifu Yin
- Urology Department, Urology Research Institute, Organ Transplantation Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Yamei Jiang
- Urology Department, Urology Research Institute, Organ Transplantation Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Zhongli Huang
- Urology Department, Urology Research Institute, Organ Transplantation Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Jinpeng Liu
- Urology Department, Urology Research Institute, Organ Transplantation Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Zhiling Wang
- Urology Department, Urology Research Institute, Organ Transplantation Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Linde Li
- Urology Department, Urology Research Institute, Organ Transplantation Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Jun Zeng
- Urology Department, Urology Research Institute, Organ Transplantation Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Yu Fan
- Urology Department, Urology Research Institute, Organ Transplantation Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Xianding Wang
- Urology Department, Urology Research Institute, Organ Transplantation Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Xingxing Li
- Urology Department, Urology Research Institute, Organ Transplantation Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Tao Lin
- Urology Department, Urology Research Institute, Organ Transplantation Centre, West China Hospital, Sichuan University, Chengdu, China
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Carballo-Uicab G, Linares-Trejo JE, Mellado-Sánchez G, López-Morales CA, Velasco-Velázquez M, Pavón L, Estrada-Parra S, Pérez-Tapia SM, Medina-Rivero E. Validation of a Cell Proliferation Assay to Assess the Potency of a Dialyzable Leukocyte Extract Intended for Batch Release. Molecules 2019; 24:molecules24193426. [PMID: 31547184 PMCID: PMC6804008 DOI: 10.3390/molecules24193426] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/06/2019] [Accepted: 09/08/2019] [Indexed: 11/16/2022] Open
Abstract
Transferon® is a blood product with immunomodulatory properties constituted by a complex mixture of peptides obtained from a human dialyzable leukocyte extract (DLE). Due to its complex nature, it is necessary to demonstrate batch consistency in its biological activity. Potency is the quantitative measure of biological activity and is also a quality attribute of drugs. Here we developed and validated a proliferation assay using Jurkat cells exposed to azathioprine, which is intended to determine the potency of Transferon® according to international guidelines for pharmaceuticals. The assay showed a linear response (2.5 to 40 µg/mL), coefficients of variation from 0.7 to 13.6% demonstrated that the method is precise, while r2 = 0.97 between the nominal and measured values obtained from dilutional linearity showed that the method is accurate. We also demonstrated that the cell proliferation response was specific for Transferon® and was not induced by its vehicle nor by other peptide complex mixtures (glatiramer acetate or hydrolyzed collagen). The bioassay validated here was used to assess the relative potency of eight released batches of Transferon® with respect to a reference standard, showing consistent results. The collective information from the validation and the assessment of several batches indicate that the bioassay is suitable for the release of Transferon®.
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Affiliation(s)
- Gregorio Carballo-Uicab
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de Mexico 11340, Mexico.
| | - José E Linares-Trejo
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de Mexico 11340, Mexico.
| | - Gabriela Mellado-Sánchez
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de Mexico 11340, Mexico.
| | - Carlos A López-Morales
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de Mexico 11340, Mexico.
| | - Marco Velasco-Velázquez
- Departamento de Farmacología y Unidad Periférica de Investigación en Biomedicina Traslacional (CMN 20 de noviembre, ISSSTE), Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de Mexico 04510, Mexico.
| | - Lenin Pavón
- Laboratorio de Psicoinmunología, Dirección de Investigaciones en Neurociencias del Instituto Nacional de Psiquiatría Ramón de la Fuente, Cuida de Mexico 14370, Mexico.
| | - Sergio Estrada-Parra
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de Mexico 11340, Mexico.
| | - Sonia Mayra Pérez-Tapia
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de Mexico 11340, Mexico.
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de Mexico 11340, Mexico.
- Laboratorio Nacional para Servicios Especializados de Investigación, Desarrollo e Innovación (I+D+i) para Farmacoquímicos y Biotecnológicos, LANSEIDI-FarBiotec-CONACyT, Ciudad de Mexico 11340, Mexico.
| | - Emilio Medina-Rivero
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de Mexico 11340, Mexico.
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Sa S, Li J, Li X, Li Y, Liu X, Wang D, Zhang H, Fu Y. Development and validation of a preoperative prediction model for colorectal cancer T-staging based on MDCT images and clinical information. Oncotarget 2017; 8:55308-55318. [PMID: 28903421 PMCID: PMC5589660 DOI: 10.18632/oncotarget.19427] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 07/12/2017] [Indexed: 12/11/2022] Open
Abstract
Objectives This study aimed to establish and evaluate the efficacy of a prediction model for colorectal cancer T-staging. Results T-staging was positively correlated with the level of carcinoembryonic antigen (CEA), expression of carbohydrate antigen 19-9 (CA19-9), wall deformity, blurred outer edges, fat infiltration, infiltration into the surrounding tissue, tumor size and wall thickness. Age, location, enhancement rate and enhancement homogeneity were negatively correlated with T-staging. The predictive results of the model were consistent with the pathological gold standard, and the kappa value was 0.805. The total accuracy of staging improved from 51.04% to 86.98% with the proposed model. Materials and Methods The clinical, imaging and pathological data of 611 patients with colorectal cancer (419 patients in the training group and 192 patients in the validation group) were collected. A spearman correlation analysis was used to validate the relationship among these factors and pathological T-staging. A prediction model was trained with the random forest algorithm. T staging of the patients in the validation group was predicted by both prediction model and traditional method. The consistency, accuracy, sensitivity, specificity and area under the curve (AUC) were used to compare the efficacy of the two methods. Conclusions The newly established comprehensive model can improve the predictive efficiency of preoperative colorectal cancer T-staging.
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Affiliation(s)
- Sha Sa
- Department of Radiology, The First Hospital of Jilin University, Changchun, China
| | - Jing Li
- Department of Radiology, The First Hospital of Jilin University, Changchun, China
| | - Xiaodong Li
- Department of Radiology, The First Hospital of Jilin University, Changchun, China
| | - Yongrui Li
- Department of Radiology, The First Hospital of Jilin University, Changchun, China
| | - Xiaoming Liu
- College of Electronic Science and Engineering, Jilin University, Changchun, China
| | - Defeng Wang
- Research Center for Medical Image Computing, Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.,Union Medical Imaging Research Institute, Shenzhen, China
| | - Huimao Zhang
- Department of Radiology, The First Hospital of Jilin University, Changchun, China
| | - Yu Fu
- Department of Radiology, The First Hospital of Jilin University, Changchun, China
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Jadhav SB, Reddy PS, Narayanan KL, Bhosale PN. Development of RP-HPLC, Stability Indicating Method for Degradation Products of Linagliptin in Presence of Metformin HCl by Applying 2 Level Factorial Design; and Identification of Impurity-VII, VIII and IX and Synthesis of Impurity-VII. Sci Pharm 2017; 85:scipharm85030025. [PMID: 28653975 PMCID: PMC5620513 DOI: 10.3390/scipharm85030025] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Revised: 06/06/2017] [Accepted: 06/07/2017] [Indexed: 01/19/2023] Open
Abstract
The novel reverse phase-high performance liquid chromatography (RP-HPLC), stability indicating method was developed for determination of linagliptin (LGP) and its related substances in linagliptin and metformin HCl (MET HCl) tablets by implementing design of experiment to understand the critical method parameters and their relation with critical method attributes; to ensure robustness of the method. The separation of nine specified impurities was achieved with a Zorbax SB-Aq 250 × 4.6 mm, 5 µm column, using gradient elution and a detector wavelength of 225 nm, and validated in accordance with International Conference on Harmonization (ICH) guidelines and found to be accurate, precise, reproducible, robust, and specific. The drug was found to be degrading extensively in heat, humidity, basic, and oxidation conditions and was forming degradation products during stability studies. After slight modification in the buffer and the column, the same method was used for liquid chromatography–mass spectrometry (LC-MS) and ultra-performance liquid chromatography -time-of-flight/mass spectrometry UPLC-TOF/MS analysis, to identify m/z and fragmentation of maximum unspecified degradation products i.e., Impurity-VII (7), Impurity-VIII (8), and Impurity-IX (9) formed during stability studies. Based on the results, a degradation pathway for the drug has been proposed and synthesis of Impurity-VII (7) is also discussed to ensure an in-depth understanding of LGP and its related degradation products and optimum performance during the lifetime of the product.
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Affiliation(s)
- Sushant B Jadhav
- Research and Development, Integrated Product Development, Dr. Reddy's Laboratories Ltd, Bachupally, Hyderabad 500 090, Telangana, India.
- Department of Chemistry, Shivaji University, Kolhapur 416 004, Maharashtra, India.
| | - P Sunil Reddy
- Research and Development, Integrated Product Development, Dr. Reddy's Laboratories Ltd, Bachupally, Hyderabad 500 090, Telangana, India.
| | - Kalyanaraman L Narayanan
- Research and Development, Integrated Product Development, Dr. Reddy's Laboratories Ltd, Bachupally, Hyderabad 500 090, Telangana, India.
| | - Popatrao N Bhosale
- Department of Chemistry, Shivaji University, Kolhapur 416 004, Maharashtra, India.
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Pottel H, Hoste L, Dubourg L, Ebert N, Schaeffner E, Eriksen BO, Melsom T, Lamb EJ, Rule AD, Turner ST, Glassock RJ, De Souza V, Selistre L, Mariat C, Martens F, Delanaye P. An estimated glomerular filtration rate equation for the full age spectrum. Nephrol Dial Transplant 2016; 31:798-806. [PMID: 26932693 DOI: 10.1093/ndt/gfv454] [Citation(s) in RCA: 293] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 12/20/2015] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Glomerular filtration rate (GFR) is accepted as the best indicator of kidney function and is commonly estimated from serum creatinine (SCr)-based equations. Separate equations have been developed for children (Schwartz equation), younger and middle-age adults [Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation] and older adults [Berlin Initiative Study 1 (BIS1) equation], and these equations lack continuity with ageing. We developed and validated an equation for estimating the glomerular filtration rate that can be used across the full age spectrum (FAS). METHODS The new FAS equation is based on normalized serum creatinine (SCr/Q), where Q is the median SCr from healthy populations to account for age and sex. Coefficients for the equation are mathematically obtained by requiring continuity during the paediatric-adult and adult-elderly transition. Research studies containing a total of 6870 healthy and kidney-diseased white individuals, including 735 children, <18 years of age, 4371 adults, between 18 and 70 years of age, and 1764 older adults, ≥70 years of age with measured GFR (inulin, iohexol and iothalamate clearance) and isotope dilution mass spectrometry-equivalent SCr, were used for the validation. Bias, precision and accuracy (P30) were evaluated. RESULTS The FAS equation was less biased [-1.7 (95% CI -3.4, -0.2) versus 6.0 (4.5, 7.5)] and more accurate [87.5% (85.1, 89.9) versus 83.8% (81.1, 86.5)] than the Schwartz equation for children and adolescents; less biased [5.0 (4.5, 5.5) versus 6.3 (5.9, 6.8)] and as accurate [81.6% (80.4, 82.7) versus 81.9% (80.7, 83.0)] as the CKD-EPI equation for young and middle-age adults; and less biased [-1.1 (-1.6, -0.6) versus 5.6 (5.1, 6.2)] and more accurate [86.1% (84.4, 87.7) versus 81.8% (79.7, 84.0)] than CKD-EPI for older adults. CONCLUSIONS The FAS equation has improved validity and continuity across the full age-spectrum and overcomes the problem of implausible eGFR changes in patients which would otherwise occur when switching between more age-specific equations.
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Affiliation(s)
- Hans Pottel
- Department of Public Health and Primary Care, KU Leuven Campus Kulak Kortrijk, Kortrijk, Belgium
| | - Liesbeth Hoste
- Department of Public Health and Primary Care, KU Leuven Campus Kulak Kortrijk, Kortrijk, Belgium
| | - Laurence Dubourg
- Exploration Fonctionnelle Rénale, Groupement Hospitalier Edouard Herriot, Hospices Civils de Lyon, Lyon, France
| | - Natalie Ebert
- Charité University Hospital, Institute of Public Health, Berlin, Germany
| | - Elke Schaeffner
- Charité University Hospital, Institute of Public Health, Berlin, Germany
| | - Bjørn Odvar Eriksen
- Metabolic and Renal Research Group, UiT The Arctic University of Norway, Tromsø, Norway
| | - Toralf Melsom
- Metabolic and Renal Research Group, UiT The Arctic University of Norway, Tromsø, Norway
| | - Edmund J Lamb
- Clinical Biochemistry, East Kent Hospitals University NHS Foundation Trust, Canterbury, Kent, UK
| | - Andrew D Rule
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - Stephen T Turner
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - Richard J Glassock
- Emeritus Professor of Medicine, Geffen School of Medicine at UCLA, Laguna Niguel, CA, USA
| | - Vandréa De Souza
- Universidade Federal do Rio Grande do Sul, FAMED - Programa de Pós Graduação em Saúde da Criança e do Adolescente, Porto Alegre, Brazil
| | - Luciano Selistre
- Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | - Christophe Mariat
- Service de Néphrologie, Dialyse et Transplantation Rénale, Hôpital Nord, CHU de Saint-Etienne, Saint-Etienne, France
| | - Frank Martens
- Department of Clinical Chemistry, AZ Groeninge Hospital, Kortrijk, Belgium
| | - Pierre Delanaye
- Nephrology-Dialysis-Transplantation, University of Liège, CHU Sart Tilman, Liège, Belgium
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Jain N, Raghuwanshi R, Jain D. Development and Validation of RP-HPLC Method for Simultaneous Estimation of Atorvastatin Calcium and Fenofibrate in Tablet Dosage Forms. Indian J Pharm Sci 2011; 70:263-5. [PMID: 20046730 PMCID: PMC2792487 DOI: 10.4103/0250-474x.41473] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2006] [Revised: 11/07/2007] [Accepted: 04/27/2008] [Indexed: 11/09/2022] Open
Abstract
A reverse phase high performance liquid chromatographic method was developed for the simultaneous estimation of atorvastatin calcium and fenofibrate in tablet formulation. The separation was achieved by Luna C18 column and methanol:acetate buffer pH 3.7 (82:18 v/v) as mobile phase, at a flow rate of 1.5 ml/min. Detection was carried out at 248 nm. Retention time of atorvastatin calcium and fenofibrate was found to be 3.02+0.1 and 9.05+0.2 min, respectively. The method has been validated for linearity, accuracy and precision. Linearity for atorvastatin calcium and Fenofibrate were in the range of 1-5 μg/ml and 16-80 μg/ml, respectively. The mean recoveries obtained for Atorvastatin calcium and fenofibrate were 101.76% and 100.06%, respectively. Developed method was found to be accurate, precise, selective and rapid for simultaneous estimation of atorvastatin calcium and fenofibrate in tablets.
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Affiliation(s)
- N Jain
- School of Pharmaceutical Sciences, Rajiv Gandhi Proudhyogiki Vishwavidhyalaya, Bhopal-462 036, India
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