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cross-sectional studies

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https://www.readbyqxmd.com/read/28941389/vitamin-a-nutritional-status-in-high-and-low-income-postpartum-women-and-its-effect-on-colostrum-and-the-requirements-of-the-term-newborn
#1
Cristiane Santos Sânzio Gurgel, Evellyn C Grilo, Larissa Q Lira, Débora G F Assunção, Priscila G Oliveira, Larisse R M de Melo, Silvia V de Medeiros, Luanna C Pessanha, Roberto Dimenstein, Clélia O Lyra
OBJECTIVE: To evaluate the vitamin A status in serum and colostrum of postpartum women with different socioeconomic status, comparing the colostrum retinol supply with the vitamin A requirement of the newborn. METHODS: Cross-sectional study conducted with 424 postpartum women. Vitamin A maternal dietary intake was estimated using a food frequency questionnaire. Colostrum and serum retinol levels were measured by high performance liquid chromatography (HPLC). Serum retinol concentrations <20μg/dL were indicative of vitamin A deficiency (VAD)...
September 20, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28941388/high-frequency-of-s-aureus-mssa-mrsa-in-children-under-1-year-old-with-skin-and-soft-tissue-infections
#2
Lorena Salazar, Judy Natalia Jimenez Quiceno
OBJECTIVE: Staphylococcus aureus is responsible for a large number of infections in pediatric population; however, information about the behavior of such infections in this population is limited. The aim of the study was to describe the clinical, epidemiological, and molecular characteristics of infections caused by methicillin-susceptible and resistant S. aureus (MSSA-MRSA) in a pediatric population. METHOD: A cross-sectional descriptive study in patients from birth to 14 years of age from three high-complexity institutions was conducted (2008-2010)...
September 20, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28941378/associations-among-adolescent-sleep-problems-emotion-regulation-and-affective-disorders-findings-from-a-nationally-representative-sample
#3
Cara A Palmer, Benjamin Oosterhoff, Joanne L Bower, Julie B Kaplow, Candice A Alfano
Sleep problems in youth reliably forecast the development of anxiety and mood disorders, presumably due to increased emotional difficulties. However, precise emotional mechanisms have yet to be delineated. The current study investigated how sleep problems in adolescence are associated with different emotion regulation strategies, and how sleep and psychiatric risk may be indirectly associated via poor emotion regulation. This study utilized data from the National Comorbidity Survey-Adolescent Supplement, a nationally representative sample from the United States (N = 10,148; age range 13-18 years)...
September 18, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28941363/maintenance-of-distal-intestinal-structure-in-the-face-of-prolonged-fasting-a-comparative-examination-of-species-from-five-vertebrate-classes
#4
Marshall D McCue, Celeste A Passement, David K Meyerholz
It was recently shown that fasting alters the composition of microbial communities residing in the distal intestinal tract of animals representing five classes of vertebrates [i.e., fishes (tilapia), amphibians (toads), reptiles (leopard geckos), birds (quail), and mammals (mice)]. In the current study, we tested the hypothesis that the extent of tissue reorganization in the fasted distal intestine was correlated with the observed changes in enteric microbial diversity. Segments of intestine adjacent to those used for the microbiota study were examined histologically to quantify cross-sectional and mucosal surface areas as well as thicknesses of mucosa, submucosa, and tunica muscularis...
September 23, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28938748/random-start-ovarian-stimulation-for-fertility-preservation-appears-unlikely-to-delay-initiation-of-neoadjuvant-chemotherapy-for-breast-cancer
#5
Joseph M Letourneau, Nikita Sinha, Kaitlyn Wald, Eve Harris, Molly Quinn, Tal Imbar, Evelyn Mok-Lin, A Jo Chien, Mitchell Rosen
STUDY QUESTION: Is random start ovarian stimulation associated with delays in initiation of neoadjuvant chemotherapy for breast cancer? SUMMARY ANSWER: Among women who complete fertility preservation (FP) consultation, random start ovarian stimulation is unlikely to delay time to initiation of neoadjuvant chemotherapy start. WHAT IS KNOWN ALREADY: Neoadjuvant chemotherapy is now a widely accepted treatment modality for operable breast cancer and random start ovarian stimulation is an increasingly-utilized modality for FP...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938746/women-s-career-priority-is-associated-with-attitudes-towards-family-planning-and-ethical-acceptance-of-reproductive-technologies
#6
Michael K Simoni, Lin Mu, Stephen C Collins
STUDY QUESTION: Do women who place high importance on career success have different perceptions of pregnancy planning, delayed reproduction, and the ethical acceptability of ART than women with less emphasis on their career? SUMMARY ANSWER: Career-focused women place more importance on pregnancy planning, have greater confidence in delayed childbearing, and are more ethically accepting of donor gamete ART than women who do not place as much importance on career success...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938669/hepatitis-b-virus-infection-and-decreased-risk-of-stroke-a-meta-analysis
#7
Yaqin Wang, Jianping Xiong, Xi Chen, Meng Niu, Xiaowei Chen, Yuheng Guan, Kechuang Zheng, Ke Xu
Several studies have reported that hepatitis B virus (HBV) infection may decrease the risk of stroke. However, its association is controversial. Thus, we conducted a systematic review and meta-analysis to investigate the relationship between hepatitis B virus (HBV) infection and the risk of stroke. Relevant studies published before May 2017 were identified by searching PubMed, EMBASE, and ISI Web of Science. The relationships between HBV infection and the risk of stroke were assessed using odds ratio (OR)/risk ratio (RR) values and the corresponding 95% confidence intervals (CIs)...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938579/the-effects-of-air-pollution-on-mortality-and-clinicopathological-features-of-esophageal-cancer
#8
Xiaochen Huang, Shanghui Guan, Jiangfeng Wang, Linli Zhao, Yibin Jia, Zilong Lu, Cuiping Yin, Shengsi Yang, Qingxu Song, Lihui Han, Cong Wang, Jingyi Li, Wei Zhou, Xiaolei Guo, Yufeng Cheng
This study aimed to estimate the associations between air pollution and esophageal cancer. In the ecologic cross-sectional study, correlation analyses were made between city-level mean concentrations of particulate matter less than 10μm in aerodynamic diameter (PM10), SO2, NO2 and city-level age-standardized mortality rates of esophageal cancer in Shandong Province, China. PM10 (p=0.046) and NO2 (p=0.03) both had significant linear correlations with esophageal cancer mortality rates. After introducing smoking as a risk factor in models of multiple linear regression analyses, PM10 was still an independent risk factor that increased esophageal cancer mortality rates...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938419/nocturnal-urinary-excretion-of-fsh-and-lh-in-children-and-adolescents-with-normal-and-early-puberty
#9
Nanna Kolby, Alexander S Busch, Lise Aksglaede, Kaspar Sørensen, Jorgen Holm Petersen, Anna-Maria Andersson, Anders Juul
Context: Clinical use of single serum gonadotropin measurements in children is limited by the pulsatile section of FSH and LH. However, first morning voided (FMV) urine may integrate the fluctuating gonadotropin serum levels. Objective: We aimed to evaluate urinary and serum gonadotropin levels according to age, sex and pubertal stage in healthy children and to assess the clinical use of FMV urinary gonadotropins in children with disordered puberty. Design: Cross-sectional part of the COPENHAGEN Puberty study and longitudinal study of patients...
August 15, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938337/pulse-pressure-is-associated-with-plasma-amyloid-%C3%AE-transport-dysfunction
#10
Yu Jiang, Suhang Shang, Pei Li, Chen Chen, Liangjun Dang, Jin Wang, Kang Huo, Meiying Deng, Jingyi Wang, Qiumin Qu
OBJECTIVE: Increased pulse pressure (PP) has been implicated in the development and progression of Alzheimer's disease in middle-aged and elderly adults. Considering the close relationship between peripheral amyloid-β clearance and brain amyloid-β deposition, we investigated the potential association between PP and plasma amyloid-β transport function. METHODS: In this cross-sectional study, a total of 1118 participants underwent a health assessment and quantification of plasma amyloid-β and amyloid-β transporter expression...
September 21, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28938330/temporal-scalp-thickness-body-mass-index-and-suprafascial-placement-of-receiver-coil-of-the-cochlear-implant
#11
Orhan Ozturan, Alper Yenigun, Erol Senturk, Omer Faruk Calim, Fadlullah Aksoy, Sabri Baki Eren
OBJECTIVE: The objectives of this study are to demonstrate the relationship between the thickness of the temporal scalp and body mass index (BMI), age, and sex, and to present the surgical technique which we perform in patients with a thick scalp. MATERIALS AND METHODS: This is a retrospective, cross-sectional study. This study was performed in a tertiary referral center. Cranial computed tomography images of 469 subjects were included in the study. These subjects were evaluated according to BMI, age, and sex...
September 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28938284/longitudinal-validation-of-the-promis-physical-function-item-bank-in-upper-extremity-trauma
#12
Aaron J Kaat, Nan E Rothrock, Mark S Vrahas, Robert V OʼToole, Sarah K Buono, Timothy Zerhusen, Richard C Gershon
OBJECTIVES: To evaluate the reliability, validity, and responsiveness of the Patient-Reported Outcomes Measurement Information System (PROMIS) Upper Extremity Computer Adaptive Test (UE-CAT) and the 8-item Physical Function short form (PF-SF8a) for monitoring outcomes after musculoskeletal injuries in upper extremity trauma patients. DESIGN: Prospective cohort study. SETTING: Two Level-I trauma centers. PATIENTS: Eligible consecutive patients were approached and 424 consented at time 1 (median 9...
October 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28938232/best-practice-guidelines-for-the-measurement-of-physical-activity-levels-in-stroke-survivors-a-secondary-analysis-of-an-observational-study
#13
Louise Tinlin, Natalie Fini, Julie Bernhardt, Lucy K Lewis, Tim Olds, Coralie English
The aim of this study was to investigate the phenomenon of activity (increased activity in response to monitor wear) and determine the minimum wear time of accelerometers when objectively measuring habitual physical activity levels of community dwelling stroke survivors. Exploratory, secondary analyses of cross-sectional data were carried out. Physical activity variables [sitting, standing and stepping time, step count, light physical activity and moderate-to-vigorous physical activity (MVPA)] were measured with two activity monitors for 7 days...
September 21, 2017: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
https://www.readbyqxmd.com/read/28938206/the-moderating-effect-of-the-need-to-belong-and-classroom-composition-on-belongingness-seeking-of-minority-adolescents
#14
Fu Wen Kuo, Shu Ching Yang
This study aimed to elucidate whether the interaction of classroom composition and the need to belong influences belongingness seeking and, if so, to investigate how upward comparison mediates the effects. The analyses were conducted with a cross-sectional sample of 383 Taiwanese aboriginal adolescents (39.7% male) recruited from schools with mixed-sex/ethnicity (n = 113), single-sex (n = 122), and minority-only (n = 148) classrooms. After controlling for socioeconomic status, the moderation analyses indicated that participants with a chronic need to belong in classes with diversity (mixed sex/ethnicity) perceived higher social acceptance, while those with a chronic need to belong in homogeneous classes (single-sex and minority-only) reported greater feelings of rejection...
September 19, 2017: Journal of Adolescence
https://www.readbyqxmd.com/read/28938204/natural-outdoor-environments-and-mental-health-stress-as-a-possible-mechanism
#15
Margarita Triguero-Mas, David Donaire-Gonzalez, Edmund Seto, Antònia Valentín, David Martínez, Graham Smith, Gemma Hurst, Glòria Carrasco-Turigas, Daniel Masterson, Magdalena van den Berg, Albert Ambròs, Tania Martínez-Íñiguez, Audrius Dedele, Naomi Ellis, Tomas Grazulevicius, Martin Voorsmit, Marta Cirach, Judith Cirac-Claveras, Wim Swart, Eddy Clasquin, Annemarie Ruijsbroek, Jolanda Maas, Michael Jerret, Regina Gražulevičienė, Hanneke Kruize, Christopher J Gidlow, Mark J Nieuwenhuijsen
INTRODUCTION: Better mental health has been associated with exposure to natural outdoor environments (NOE). However, comprehensive studies including several indicators of exposure and outcomes, potential effect modifiers and mediators are scarce. OBJECTIVES: We used novel, objective measures to explore the relationships between exposure to NOE (i.e. residential availability and contact) and different indicators of mental health, and possible modifiers and mediators...
September 19, 2017: Environmental Research
https://www.readbyqxmd.com/read/28938191/blood-lead-and-preeclampsia-a-meta-analysis-and-review-of-implications
#16
Arthur E Poropat, Mark A S Laidlaw, Bruce Lanphear, Andrew Ball, Howard W Mielke
BACKGROUND: Multiple cross-sectional studies suggest that there is an association between blood lead and preeclampsia. OBJECTIVES: We performed a systematic review and meta-analysis to summarize information on the association between preeclampsia and lead poisoning. METHODS: Searches of Medline, Web of Science, Scopus, Pubmed, Science Direct and ProQuest (dissertations and theses) identified 2089 reports, 46 of which were downloaded after reviewing the abstracts, and 11 studies were evaluated as meeting the selection criteria...
September 19, 2017: Environmental Research
https://www.readbyqxmd.com/read/28938139/hpv-literacy-and-its-link-to-initiation-and-completion-of-hpv-vaccine-among-young-adults%C3%A2-in%C3%A2-minnesota
#17
H Y Lee, J Lee, C Henning-Smith, J Choi
OBJECTIVES: This study identifies whether, and how, human papillomavirus (HPV) literacy and predisposing, enabling, and need factors are associated with HPV vaccine initiation and completion among young adults in Minnesota. STUDY DESIGN: Cross-sectional survey design. METHODS: Using a sample of 170 young adults (aged 18-26 years), we used logistic regression models to identify factors associated with HPV vaccination initiation and completion, including HPV literacy, adjusting for relevant predisposing, enabling, and need factors...
September 19, 2017: Public Health
https://www.readbyqxmd.com/read/28937910/loneliness-and-social-internet-use-pathways-to-reconnection-in-a-digital-world
#18
Rebecca Nowland, Elizabeth A Necka, John T Cacioppo
With the rise of online social networking, social relationships are increasingly developed and maintained in a digital domain. Drawing conclusions about the impact of the digital world on loneliness is difficult because there are contradictory findings, and cross-sectional studies dominate the literature, making causation difficult to establish. In this review, we present our theoretical model and propose that there is a bidirectional and dynamic relationship between loneliness and social Internet use. When the Internet is used as a way station on the route to enhancing existing relationships and forging new social connections, it is a useful tool for reducing loneliness...
September 1, 2017: Perspectives on Psychological Science: a Journal of the Association for Psychological Science
https://www.readbyqxmd.com/read/28937909/the-effect-of-dynacleft%C3%A2-on-cleft-width-in-unilateral-cleft-lip-and-palate-patients
#19
LaQuia Vinson
OBJECTIVE: The specific aim of this retrospective cross-sectional study was to assess the efficacy of DynaCleft(®) as a method of presurgical orthopedics with infants with a unilateral cleft lip and cleft palate who used an oral obturator. STUDY DESIGN: Data was collected from 25 infants all of comparable age diagnosed with a unilateral complete cleft lip and palate. Eight patients used DynaCleft (®) and an obturator (Group Alpha) and seventeen patients only had an obturator (Group Beta)...
September 22, 2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28937837/lung-function-functional-capacity-and-respiratory-symptoms-at-discharge-from-hospital-in-patients-with-acute-pulmonary-embolism-a-cross-sectional-study
#20
Jenny S Danielsbacka, Monika Fagevik Olsén, Per-Olof Hansson, Kaisa Mannerkorpi
BACKGROUND: Acute pulmonary embolism (PE) is a cardiovascular disease with symptoms including respiratory associated chest pain (RACP) and dyspnea. No previous studies exist focusing on lung function, functional capacity, and respiratory symptoms at discharge after PE. OBJECTIVES: The aim was to examine and describe lung function, functional capacity, and respiratory symptoms at discharge in patients with PE and compare to reference values. PATIENTS/METHODS: Fifty consecutive patients with PE admitted to the Acute Medical Unit, Sahlgrenska University Hospital, were included...
September 22, 2017: Physiotherapy Theory and Practice
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