1
|
Li C, Ma D, Li M, Wei T, Zhao X, Heng Y, Ma D, Anto EO, Zhang Y, Niu M, Zhang W. The Therapeutic Effect of Exogenous Melatonin on Depressive Symptoms: A Systematic Review and Meta-Analysis. Front Psychiatry 2022; 13:737972. [PMID: 35370838 PMCID: PMC8968118 DOI: 10.3389/fpsyt.2022.737972] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 02/17/2022] [Indexed: 12/22/2022] Open
Abstract
Background Depression-related mortality and morbidity pose growing public health burdens worldwide. Although the therapeutic effect of exogenous melatonin on depression has been investigated, findings remain inconsistent. We conducted this systematic review and meta-analysis to clarify the effectiveness of melatonin in the treatment of depression, including primary and secondary depression symptoms. Methods We searched the online databases of PubMed, EMBASE, and the Cochrane Library for original studies published up to May 2021. We used STATA 14.0 software to synthesize the results of included studies. To evaluate the effectiveness of melatonin, we calculated the standardized mean differences (SMDs) and 95% confidence intervals (CIs) of depression scores between the melatonin and placebo groups. Results Our literature search returned 754 publications, among which 19 studies with 1,178 patients (715 women, 463 men; mean age: 56.77 years) met inclusion criteria. Melatonin dosages ranged from 2 to 25 mg per day; treatment durations were between 10 days and 3.5 years. Our synthesized results showed that melatonin was not found significantly beneficial for alleviating depressive symptoms (SMD = -0.17, 95% CI = [-0.38, 0.05]). Subgroup analysis demonstrated that the decrease in depression scores measured with the Beck Depression Inventory (BDI) was significant (SMD = -0.52, 95% CI = [-0.73, -0.31]). Conclusions There is very limited evidence for effects of melatonin on depression.
Collapse
Affiliation(s)
- Cancan Li
- School of Public Health, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing, China
| | - Dandan Ma
- The Second Affiliated Hospital of Shandong First Medical University, Taian, China
- School of Basic Medical Science, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
| | - Min Li
- Department of Medical Image, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- Department of Medical Image, Taian City Central Hospital, Taian, China
| | - Tao Wei
- School of Basic Medical Science, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
| | - Xuan Zhao
- School of Public Health, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
| | - Yuanyuan Heng
- School of Public Health, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
| | - Delong Ma
- School of Public Health, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
| | - Enoch Odame Anto
- College of Health Sciences, Department of Medical Diagnostic, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
- Centre for Precision Health, School of Medical and Health Sciences, Edith Cowan University, Perth, WA, Australia
| | - Yanbo Zhang
- The Second Affiliated Hospital of Shandong First Medical University, Taian, China
| | - Mingyun Niu
- The Second Affiliated Hospital of Shandong First Medical University, Taian, China
| | - Wangxin Zhang
- School of Basic Medical Science, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
| |
Collapse
|
2
|
Stressful events as correlates of depressive and PTSD symptoms in Hong Kong women during social unrest and COVID-19 pandemic. J Affect Disord 2022; 300:263-268. [PMID: 34990624 PMCID: PMC9754668 DOI: 10.1016/j.jad.2022.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 12/28/2021] [Accepted: 01/01/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Stressors at the population level affect women more than men. The influence of prolonged stressors on mental disorders in women is yet unknown, especially when social movements and pandemics coexist. METHODS This study analysed data from an online mental health self-help service for women in Hong Kong between May and September 2020. We collected demographic data, PTSD symptoms, and exposure to social unrest-related traumatic events (TEs), pandemic-related traumatic events (PEs), and personal stressful life experiences (SLEs). Multiple logistic regression was performed to examine the links between TEs, PEs, and SLEs and PTSD. RESULTS The study found that 38.4% of 751 women had moderate-to-severe depressive symptoms and 23.8% had probable PTSD. The most common TEs, PEs, and SLEs were violence via media, major physical health concerns, and plans thwarted due to COVID-19, respectively. Younger age, less education, unemployment, and more stressors (individually or collectively, except for high TEs and PEs) were linked to increased odds of moderate-to-severe depressive symptoms. TEs and PEs increased the risk of probable PTSD only when SLEs were present. LIMITATION The non-random samplinging procedure reduced the generalisability to the entire women population. CONCLUSIONS Exposure to social conflicts and pandemics may increase depressive and PTSD symptoms in women. Developing mental health services for women should consider the impact of concurrent major events.
Collapse
|
3
|
Tangviriyapaiboon D, Sirithongthaworn S, Apikomonkon H, Suyakong C, Srikummoon P, Kawilapat S, Traisathit P. Development and psychometric evaluation of a Thai Diagnostic Autism Scale for the early diagnosis of Autism Spectrum Disorder. Autism Res 2021; 15:317-327. [PMID: 34697914 PMCID: PMC9297913 DOI: 10.1002/aur.2631] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 10/04/2021] [Accepted: 10/15/2021] [Indexed: 11/05/2022]
Abstract
The Thai Diagnostic Autism Scale (TDAS) was developed for use as a diagnostic tool for the early diagnosis of Autism Spectrum Disorder (ASD) in Thai children aged 12–48 months old. TDAS consists of 23 items (13 and 17 items in the observational and interview sections, respectively) classified into seven domains (A1–A3 and B1–B4) according to the criteria in the Diagnostic and Statistical Manual of Mental Disorder, fifth edition (DSM‐5). Children with a single score in the A1–A3 domains and at least two of the B1–B4 domains were classified with ASD. The item‐objective congruence (IOC) index, confirmatory factor analysis, and Kappa coefficient were used to evaluate the content, constructs, and inter‐rater validity levels between the evaluators and concurrent validity between TDAS and physicians' diagnoses, respectively. TDAS showed good overall content validity (IOC range 0.71–1.00), suitable construct validity (root‐mean‐squared errors of approximation of 0.076 and 0.067, comparative fit indexes of 0.902 and 0.858, and Tucker‐Lewis indexes of 0.882 and 0.837 for the observation and interview sections, respectively), and excellent diagnostic agreement between TDAS and the evaluators (Kappa = 1.000) as well as between TDAS and the physicians' diagnoses (Kappa = 0.871). The sensitivity and specificity of TDAS were 100% and 82.4%, respectively. In conclusion, TDAS yielded a high level of content validity, concurrent validity, and inter‐rater reliability for the early diagnosis of ASD in Thai children. A large‐scale study using TDAS is needed to determine an appropriate cut‐off point as well as its efficacy. The Thai Diagnostic Autism Scale was developed for use as a diagnostic tool for the early diagnosis of Autism Spectrum Disorder (ASD) among Thai children. It contains 23 items in seven domains for the screening via observations and interviews. The psychometric properties of this diagnostic tool provide its reliability and suitability for the early diagnosis of ASD. A large‐scale study using it is needed to determine an appropriate cut‐off point as well as its efficacy.
Collapse
Affiliation(s)
| | | | - Hataichanok Apikomonkon
- Department of Occupational Therapy, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Chidawan Suyakong
- Department of Occupational Therapy, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Pimwarat Srikummoon
- Department of Statistics, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand.,Department of Statistics, Faculty of Science, Data Science Research Center, Chiang Mai University, Chiang Mai, Thailand
| | - Suttipong Kawilapat
- Department of Statistics, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Patrinee Traisathit
- Department of Statistics, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand.,Department of Statistics, Faculty of Science, Data Science Research Center, Chiang Mai University, Chiang Mai, Thailand.,Department of Statistics, Faculty of Science, Research Center in Bioresources for Agriculture, Industry and Medicine, Chiang Mai University, Chiang Mai, Thailand
| |
Collapse
|
4
|
Reichenheim M, Bastos JL. What, what for and how? Developing measurement instruments in epidemiology. Rev Saude Publica 2021; 55:40. [PMID: 34378771 PMCID: PMC8323826 DOI: 10.11606/s1518-8787.2021055002813] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/13/2020] [Indexed: 11/15/2022] Open
Abstract
The development and cross-cultural adaptation of measurement instruments have received less attention in methodological discussions, even though it is essential for epidemiological research. At the same time, the quality of epidemiological measurements is often below ideal standards for the construction of solid knowledge on the health-disease process. The scarcity of systematizations in the field about what, what for, and how to adequately measure intangible constructs contributes to this scenario. In this review, we propose a procedural model divided into phases and stages aimed at measuring constructs at acceptable levels of validity, reliability, and comparability. Underlying our proposal is the idea that not only some but several connected studies should be conducted to obtain appropriate measurement instruments. Implementing the model may contribute to broadening the interest in measurement instruments and, especially, addressing key epidemiological problems.
Collapse
Affiliation(s)
- Michael Reichenheim
- Universidade do Estado do Rio de JaneiroInstituto de Medicina Social Hésio CordeiroDepartamento de EpidemiologiaRio de JaneiroRJBrasilUniversidade do Estado do Rio de Janeiro. Instituto de Medicina Social Hésio Cordeiro. Departamento de Epidemiologia. Rio de Janeiro, RJ, Brasil
| | - João Luiz Bastos
- Universidade Federal de Santa CatarinaDepartamento de Saúde PúblicaFlorianópolisSCBrasilUniversidade Federal de Santa Catarina. Departamento de Saúde Pública. Florianópolis, SC, Brasil
| |
Collapse
|
5
|
Cruz-Gonzalez M, Shrout PE, Alvarez K, Hostetter I, Alegría M. Measurement Invariance of Screening Measures of Anxiety, Depression, and Level of Functioning in a US Sample of Minority Older Adults Assessed in Four Languages. Front Psychiatry 2021; 12:579173. [PMID: 33658950 PMCID: PMC7917233 DOI: 10.3389/fpsyt.2021.579173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 01/25/2021] [Indexed: 01/21/2023] Open
Abstract
Population aging in the US and its increase in racial/ethnic diversity has resulted in a growing body of literature aimed at measuring health disparities among minority older adults. Disparities in health outcomes are often evaluated using self-reported measures and, to attend to linguistic diversity, these measures are increasingly being used in languages for which they were not originally developed and validated. However, observed differences in self-reported measures cannot be used to infer disparities in theoretical attributes, such as late-life depression, unless there is evidence that individuals from different groups responded similarly to the measures-a property known as measurement invariance. Using data from the Positive Minds-Strong Bodies randomized controlled trial, which delivered evidence-based mental health and disability prevention services to a racially/ethnically diverse sample of minority older adults, we applied invariance tests to two common measures of anxiety and depression (the GAD-7 and the HSCL-25) and two measures of level of functioning (the Late-Life FDI and the WHODAS 2.0) comparing four different languages: English, Spanish, Mandarin, and Cantonese. We found that these measures were conceptualized similarly across languages. However, at the item-level symptom burden, we identified a non-negligible number of symptoms with some degree of differential item functioning. Spanish speakers reported more worry symptoms and less somatic symptoms for reasons unrelated to their psychological distress. Mandarin speakers reported more feelings of restlessness, and both Mandarin and Cantonese speakers reported no interest in things more often for reasons unrelated to their psychological distress. Mandarin and Cantonese speakers were also found to consistently report more difficulties performing physical activities for reasons unrelated to their level of functioning. In general, invariance tests have been insufficiently applied within psychological research, but they are particularly relevant as a prerequisite to accurately measure health disparities. Our results highlight the importance of conducting invariance testing, as we singled out several items that may require careful examination before considering their use to compare symptoms of psychological distress and level of functioning among ethnically and linguistically diverse older adult populations.
Collapse
Affiliation(s)
- Mario Cruz-Gonzalez
- Disparities Research Unit, Department of Medicine, Massachusetts General Hospital, Boston, MA, United States.,Department of Medicine, Harvard Medical School, Boston, MA, United States
| | - Patrick E Shrout
- Department of Psychology, New York University, New York, NY, United States
| | - Kiara Alvarez
- Disparities Research Unit, Department of Medicine, Massachusetts General Hospital, Boston, MA, United States.,Department of Medicine, Harvard Medical School, Boston, MA, United States
| | - Isaure Hostetter
- Department of Health Policy, Harvard School of Public Health, Boston, MA, United States
| | - Margarita Alegría
- Disparities Research Unit, Department of Medicine, Massachusetts General Hospital, Boston, MA, United States.,Department of Medicine, Harvard Medical School, Boston, MA, United States.,Department of Psychiatry, Harvard Medical School, Boston, MA, United States
| |
Collapse
|
6
|
Saha TD, Chou SP, Grant BF. The performance of DSM-5 alcohol use disorder and quantity-frequency of alcohol consumption criteria: An item response theory analysis. Drug Alcohol Depend 2020; 216:108299. [PMID: 33002709 PMCID: PMC8228497 DOI: 10.1016/j.drugalcdep.2020.108299] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/11/2020] [Accepted: 09/15/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Maladaptive patterns of drinking are central to the development of AUD. However, no DSM-5 criteria ask about patterns of alcohol use, such as 5+/4+ binge drinking. It is important to examine whether such an item would improve the diagnostic utility of the DSM-5 instrument. METHOD Using a large representative sample of the US population, we used item response theory (IRT) methodology to examine the threshold, discrimination, and information value and differential criterion functioning of DSM-5 AUD criteria, along with a 5+/4+ drinking pattern criterion assessed at various levels of frequency. RESULTS The best fit drinking pattern criterion (defined at 5+/4+ drinking at least once a week in the past year) tapped the milder end of that continuum, which was similar to the criterion of drinking in larger amounts or for longer than intended. The new DSM-5 craving criterion was associated with mid-level values of threshold and discrimination. The AUD criteria with the addition of the 5+/4+ drinking pattern criterion demonstrated invariance across important subgroups of the population. CONCLUSIONS Among the criteria with the lowest level of threshold, the drinking pattern criterion has demonstrated its utility of the DSM-5 classification by identifying clinically significant but milder AUD cases. Along with its relationship to AUD relapse, the new craving criterion tapped the moderate levels of threshold and discrimination and thus, argues for its continued inclusion in the DSM-5 AUD formulation. Study results showed that DSM-5 AUD criteria and the 5+/4+ drinking pattern criterion formed a unidimensional continuum of AUD severity.
Collapse
Affiliation(s)
- Tulshi D. Saha
- Epidemiology and Biometry Branch, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 6700B Rockledge Drive, Room 2126, Bethesda, MD 20892
| | - S. Patricia Chou
- Epidemiology and Biometry Branch, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 6700B Rockledge Drive, Room 2126, Bethesda, MD 20892
| | | |
Collapse
|
7
|
Anghel E. Longitudinal invariance and information of the Depression, Anxiety, and Stress Scales. J Clin Psychol 2020; 76:1923-1937. [DOI: 10.1002/jclp.22968] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ella Anghel
- Department of Measurement, Evaluation, Statistics, and Assessment, Lynch School of Education and Human Development Boston College Chestnut Hill Massachusetts
| |
Collapse
|
8
|
Ji T, Li X, Meng G, Gu Y, Zhang Q, Liu L, Wu H, Yao Z, Zhang S, Wang Y, Zhang T, Wang X, Cao X, Li H, Liu Y, Wang X, Wang X, Sun S, Zhou M, Jia Q, Song K, Sun Z, Wu XH, Niu K. The association between banana consumption and the depressive symptoms in Chinese general adult population: A cross-sectional study. J Affect Disord 2020; 264:1-6. [PMID: 31846806 DOI: 10.1016/j.jad.2019.12.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 12/01/2019] [Accepted: 12/04/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND Banana contains many kinds of substances that are beneficial to depressive symptoms. However, there are no epidemiological researches directly to explore the association between banana consumption and depressive symptoms. This study aimed to investigate whether the banana consumption is related to depressive symptoms in a general adult population. METHODS A cross-sectional study was performed in 24,673 adults in Tianjin. Banana consumption was evaluated via a validated food frequency questionnaire. Depressive symptoms were assessed by using Self-Rating Depression Scale (SDS). The association between banana consumption and depressive symptoms was analyzed by multiple logistic regression analysis. RESULTS The prevalence of depressive symptoms was 16.1% in males and 18.4% in females (SDS ≥ 45), respectively. In males, comparing to the reference group (almost never), the multivariable adjusted odds ratios (ORs) (95% confidence intervals) of depressive symptoms across banana consumption were 0.86 (0.74, 0.99) for <1 time/week, 0.76 (0.66, 0.88) for 1-3 times/week and 0.97 (0.82, 1.16) for ≥4 times/week. By contrast, the multivariable adjusted ORs (95% confidence intervals) were 1.11 (0.94, 1.32) for <1 time/week, 0.99 (0.85, 1.16) for 1-3 times/week and 1.22 (1.02, 1.46) for ≥4 times/week in females. Similar association was observed when other cut-offs (SDS ≥ 48 and 50) were used to define depressive symptoms. LIMITATION This is a cross-sectional study, causality remains unknown. CONCLUSION Findings from this study suggested a negative association between moderate banana consumption and depressive symptoms in males. In females, high banana consumption is positively related to depressive symptoms.
Collapse
Affiliation(s)
- Tong Ji
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Xiaoyue Li
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Ge Meng
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China; Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, China.
| | - Yeqing Gu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Qing Zhang
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Li Liu
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Hongmei Wu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Zhanxin Yao
- Tianjin Institute of Health and Environmental Medicine, Tianjin, China
| | - Shunming Zhang
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Yawen Wang
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Tingjing Zhang
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Xuena Wang
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Xingqi Cao
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Huiping Li
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Yunyun Liu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Xiaohe Wang
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Xing Wang
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Shaomei Sun
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Ming Zhou
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Qiyu Jia
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Kun Song
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Zhong Sun
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Xiao-Hui Wu
- College of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Kaijun Niu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China; Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China; Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, China
| |
Collapse
|
9
|
Adroher ND, Kreiner S, Young C, Mills R, Tennant A. Test equating sleep scales: applying the Leunbach's model. BMC Med Res Methodol 2019; 19:141. [PMID: 31286889 PMCID: PMC6613254 DOI: 10.1186/s12874-019-0768-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 06/05/2019] [Indexed: 12/02/2022] Open
Abstract
Background In most cases, the total scores from different instruments assessing the same construct are not directly comparable, but must be equated. In this study we aimed to illustrate a novel test equating methodology applied to sleep functions, a domain in which few score comparability studies exist. Methods Eight scales from two cross-sectional self-report studies were considered, and one scale was common to both studies. The International Classification of Functioning, Disability and Health (ICF) was used to establish content comparability. Direct (common persons) and indirect (common item) equating was assessed by means of Leunbach’s model, which equates the scores of two scales depending on the same person parameter, taking into account several tests of fit and the Standard Error of Equating (SEE). Results All items were linked to the body functions category b134 of the ICF, which corresponds to ‘Sleep functions’. The scales were classified into three sleep aspects: four scales were assessing mainly sleep disturbance, one quality of sleep, and three impact of sleep on daily life. Of 16 direct equated pairs, 15 could be equated according to Leunbach’s model, and of 12 indirect equated pairs, 8 could be equated. Raw score conversion tables between each of these 23 equated pairs are provided. The SEE was higher for indirect than for direct equating. Pairs measuring the same sleep aspect did not show better fit indices than pairs from different aspects. The instruments mapped to a higher order concept of sleep functions. Conclusion Leunbach’s equating model has been successfully applied to a functioning domain little explored in test equating. This novel methodology, together with the ICF, enables comparison of clinical outcomes and research results, and facilitates communication among clinicians. Electronic supplementary material The online version of this article (10.1186/s12874-019-0768-y) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Núria Duran Adroher
- Swiss Paraplegic Research, Nottwil, Switzerland. .,Department of Health Sciences and Health Policy, University of Lucerne, Lucerne, Switzerland.
| | - Svend Kreiner
- Department of Biostatistics, University of Copenhagen, Copenhagen, Denmark
| | - Carolyn Young
- The Walton Centre NHS Foundation Trust, Liverpool, UK.,University of Liverpool, Liverpool, UK
| | - Roger Mills
- The Walton Centre NHS Foundation Trust, Liverpool, UK
| | - Alan Tennant
- Swiss Paraplegic Research, Nottwil, Switzerland.,Department of Health Sciences and Health Policy, University of Lucerne, Lucerne, Switzerland
| |
Collapse
|
10
|
Towards standardized patient reported physical function outcome reporting: linking ten commonly used questionnaires to a common metric. Qual Life Res 2018; 28:187-197. [PMID: 30317425 PMCID: PMC6339672 DOI: 10.1007/s11136-018-2007-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/17/2018] [Indexed: 02/01/2023]
Abstract
Objectives Outcomes obtained using different physical function patient reported outcome measures (PROMs) are difficult to compare. To facilitate standardization of physical function outcome measurement and reporting we developed an item response theory (IRT) based standardized physical function score metric for ten commonly used physical function PROMs. Methods Data of a total of 16,386 respondents from representative cohorts of patients with rheumatic diseases as well as the Dutch general population were used to map the items of ten commonly used physical function PROMs on a continuous latent physical function variable. The resulting IRT based common metric was cross-validated in an independent dataset of 243 patients with gout, osteoarthritis or polymyalgia in which four of the linked PROMs were administered. Results Our analyses supported that all 97 items of the ten included PROMs relate to a single underlying physical function variable and that responses to each item could be described by the generalized partial credit IRT model. In the cross-validation analyses we found congruent mean scores for four different PROMs when the IRT based scoring procedures were used. Conclusions We showed that the standardized physical function score metric developed in this study can be used to facilitate standardized reporting of physical function outcomes for ten commonly used make physical function PROMs. Electronic supplementary material The online version of this article (10.1007/s11136-018-2007-0) contains supplementary material, which is available to authorized users.
Collapse
|
11
|
Tolahunase MR, Sagar R, Dada R. 5-HTTLPR and MTHFR 677C>T polymorphisms and response to yoga-based lifestyle intervention in major depressive disorder: A randomized active-controlled trial. Indian J Psychiatry 2018; 60:410-426. [PMID: 30581206 PMCID: PMC6278208 DOI: 10.4103/psychiatry.indianjpsychiatry_398_17] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND There is growing evidence suggesting that both genetic and environmental factors modulate treatment outcome in, a highly heterogeneous, major depressive disorder (MDD). 5-HTTLPR variant of the serotonin transporter gene (SLC6A4) and MTHFR 677C>T polymorphisms have been linked to the pathogenesis of MDD, and antidepressant treatment response. The evidence is lacking on the clinical utility of yoga in patients with MDD who have 5-HTTLPR and MTHFR 677C>T polymorphisms and less likely to respond to medications (SSRIs). AIMS We aimed to examine the impact of YBLI in those who have susceptible 5-HTTLPR and MTHFR 677C>T polymorphisms and are less likely to drug therapy with SSRIs. SETTINGS AND DESIGN In a 12 week randomized active-controlled trial, MDD patients (n = 178) were randomized to receive YBLI or drug therapy. METHODS Genotyping was conducted using PCR-based methods. The clinical remission was defined as BDI-II score ≤ 9. STATISTICAL ANALYSIS USED An intent-to-treat analysis was performed, and the association of genotype with treatment remission consisted of the logistic regression model. A P value of <0.05 was considered statistically significant. RESULTS Multivariate logistic regression models for remission including either 5-HTTLPR or MTHFR 677C>T genotypes showed statistically significant odds of remission in YOGA arm vs. DRUG arm. Neither 5-HTTLPR nor MTHFR 677C>T genotype showed any influence on remission to YBLI (P = 0.73 and P = 0.64, respectively). Further analysis showed childhood adversity interact with 5-HTTLPR and MTHFR 677C>T polymorphisms to decrease treatment response in DRUG treatment arm, but not in YOGA arm. CONCLUSIONS YBLI provides MDD remission in those who have susceptible 5-HTTLPR and MTHFR 677C>T polymorphisms and are resistant to SSRIs treatment. YBLI may be therapeutic for MDD independent of heterogeneity in its etiopathogenesis.
Collapse
Affiliation(s)
- Madhuri R Tolahunase
- Department of Anatomy, Lab for Molecular Reproduction and Genetics, All India Institute of Medical Sciences, New Delhi, India
| | - Rajesh Sagar
- Department of Psychiatry, All India Institute of Medical Sciences, New Delhi, India
| | - Rima Dada
- Department of Anatomy, Lab for Molecular Reproduction and Genetics, All India Institute of Medical Sciences, New Delhi, India
| |
Collapse
|