5,496 research outputs found
The SF-36: a simple, effective measure of mobility disability for epidemiological studies
No full textBackgroundMobility disability is a major problem in older people. Numerous scales exist for the measurement of disability but often these do not permit comparisons between study groups. The physical functioning (PF) domain of the established and widely used Short Form-36 (SF-36) questionnaire asks about limitations on ten mobility activities.ObjectivesTo describe prevalence of mobility disability in an elderly population, investigate the validity of the SF-36 PF score as a measure of mobility disability, and to establish age and sex specific norms for the PF score.MethodsWe explored relationships between the SF-36 PF score and objectively measured physical performance variables among 349 men and 280 women, 59-72 years of age, who participated in the Hertfordshire Cohort Study (HCS). Normative data were derived from the Health Survey for England (HSE) 1996.Results32% of men and 46% of women had at least some limitation in PF scale items. Poor SF-36 PF scores (lowest fifth of the gender-specific distribution) were related to: lower grip strength; longer timed-up-and-go, 3m walk, and chair rises test times in men and women; and lower quadriceps peak torque in women but not men. HSE normative data showed that median PF scores declined with increasing age in men and women.ConclusionOur results are consistent with the SF-36 PF score being a valid measure of mobility disability in epidemiological studies. This approach might be a first step towards enabling simple comparisons of prevalence of mobility disability between different studies of older people. The SF-36 PF score could usefully complement existing detailed schemes for classification of disability and it now requires validation against them
SF Gospel: Blog contents, 2006-2015
No full textSF Gospel (2006-2015) was a blog exploring religious and theological themes in science fiction and popular culture by Gabriel Mckee, author of The Gospel According to Science Fiction. The primary PDF contains the textual content of the blog, along with most images that accompanied the original posts. The appendix PDF contains guest posts written by Mckee for other blogs and websites (including SF Signal, Holy Heroes, Nerve.com, and Religion Dispatches) during the course of SF Gospel's existence
Additional Files for Master Thesis "Framing Diets for Policy to Fight Climate Change"
No full textAdditional files for Master Thesis "Framing Diets for Policy to Fight Climate Change: Using video messages to measure the effect of goal framing on attitudes and intentions to reduce beef and dairy consumption to fight climate change"
Datasets
Intervention Framed Videos
Written within the M.Sc. Public Policy and Human Development at Maastricht University MGSoG/UNU-MERIT
Author: Sten Ritterfeld
Supervisor: Michelle González Amador
Submission date: July 12, 202
Additional Files for Master Thesis "Framing Diets for Policy to Fight Climate Change"
No full textAdditional files for Master Thesis "Framing Diets for Policy to Fight Climate Change: Using video messages to measure the effect of goal framing on attitudes and intentions to reduce beef and dairy consumption to fight climate change"
Datasets
Intervention Framed Videos
Written within the M.Sc. Public Policy and Human Development at Maastricht University MGSoG/UNU-MERIT
Author: Sten Ritterfeld
Supervisor: Michelle González Amador
Submission date: July 12, 202
Systematic investigation of gastrointestinal diseases in China (SILC): validation of survey methodology
No full textBackground: Symptom-based surveys suggest that the prevalence of gastrointestinal diseases is lower in China than in Western countries. The aim of this study was to validate a methodology for the epidemiological investigation of gastrointestinal symptoms and endoscopic findings in China. Methods: A randomized, stratified, multi-stage sampling methodology was used to select 18 000 adults aged 18-80 years from Shanghai, Beijing, Xi'an, Wuhan and Guangzhou. Participants from Shanghai were invited to provide blood samples and undergo upper gastrointestinal endoscopy. All participants completed Chinese versions of the Reflux Disease Questionnaire (RDQ) and the modified Rome II questionnaire; 20% were also invited to complete the 36-item Short Form Health Survey (SF-36) and Epworth Sleepiness Scale (ESS). The psychometric properties of the questionnaires were evaluated statistically. Results: The study was completed by 16 091 individuals (response rate: 89.4%), with 3219 (89.4% of those invited) completing the SF-36 and ESS. All 3153 participants in Shanghai provided blood samples and 1030 (32.7%) underwent endoscopy. Cronbach's alpha coefficients were 0.89, 0.89, 0.80 and 0.91, respectively, for the RDQ, modified Rome II questionnaire, ESS and SF-36, supporting internal consistency. Factor analysis supported construct validity of all questionnaire dimensions except SF-36 psychosocial dimensions. Conclusion: This population-based study has great potential to characterize the relationship between gastrointestinal symptoms and endoscopic findings in China.Xiaoyan Yan, Rui Wang, Yanfang Zhao, Xiuqiang Ma, Jiqian Fang, Hong Yan, Xiaoping Kang, Ping Yin, Yuantao Hao, Qiang Li, John Dent, Joseph Sung, Duowu Zou, Saga Johansson, Katarina Halling, Wenbin Liu and Jia H
RESIDUAL SOLUBILITY OF SF-GROUPS
No full textSeifert Fibre Groups (SF-Gps) have been introduced and their first derived groups have been worked out in an earlier paper by the author [2,3]. Now we aim to prove that they are residually soluble and residually finite
The Author, the IRS and Prepublication Expenditures
No full textAuthors have customarily deducted expenditures incurred in preparing a book for publication. The IRS has taken the position that such expenditures should be capitalized and then amortized. In the recent case of Faura v. Commissioner, the Tax Court allowed authors to deduct prepublication expenditures rather than capitalize them. In 1976, section 280 was added to the Internal Revenue Code by the 1976 Tax Reform Act. This section appears to require authors to capitalize prepublication expenditures for books. The Tax Reform Act of 1976 also contained section 2119 which allows authors to deduct prepublication expenditures until regulations are promulgated concerning them. To date, there is no solid authority on whether an author should capitalize post-1976 prepublication expenditures
Influência da passagem em diferentes espécies de triatomideos na virulência e patogenicidade de cepas do Trypanosoma cruzi
No full textNo presente trabalho, procuramos verificar a influência sobre a virulência e patogenicidade, de cepas do T. cruzi da passagem em diferentes espécies vetoras: Triatoma infestans, Panstrongylus megistus e Rhodnius prolixus. Cepas do T. cruzi: Peruana, 12 SF e Colombiana (consideradas respectivamente como protótipos dos tipos biológicos I, II e III - Andrade, 1974), cepas provenientes de São Felipe/BA (Recôncavo Baiano) 19 SF, 21 SF e 22 SF (tipo II, Z2), de Montalvânia/MG 1 Mont e 2 Mont (tipo III, Z1) e de Mambaí/GO 3 MAM e 17 MAM (tipo II, Z2). Grupos experimentais: Cada cepa do T. cruzi foi inoculada (10⁴ tripomastigotas, via intraperitoneal), em grupos de 20 camundongos suícos de 10 a 12g após passagem prévia nas 3 espécies vetoras e lavagem dos parasitos com PBS, sendo estudada em comparação aos grupos inoculados com formas sangüícolas (controles)
Test-retest reliability of the IPAQ-SF.
No full textPurposeThis study aimed to determine the test-retest reliability and concurrent validity of the International Physical Activity Questionnaire Short Form (IPAQ-SF) in Chilean adults.MethodsA cross-sectional validation study was carried out on 161 adults aged between 35 and 65, selected from a population-based study in Temuco, Chile. IPAQ-SF was completed twice, seven days apart, to analyze the test-retest reliability with the intraclass correlation coefficient (ICC). Objective PA was assessed by accelerometry (ActiGraph GT3X+) for seven consecutive days. Intraclass correlation coefficients were used to determine the reliability. Spearman correlation coefficients (rho) and Bland-Altman plots were calculated to assess validity.Results144 subjects (52.5 ± 8.8 years, 53.9% men) answered the IPAQ-SF on both occasions and had valid accelerometry data. The IPAQ-SF showed moderate reliability for sitting time (ICC = 0.62), while it was poor for walking (ICC = 0.40), moderate PA (ICC = 0.41), vigorous PA (ICC = 0.48), and total PA (ICC = 0.33). There were weak correlations between IPAQ-SF and accelerometry for sedentary behavior (rho = 0.28, p = 0.0005), walking (rho = 0.11, p = 0.17), moderate PA (rho = 0.13, p = 0.128), vigorous PA (rho = 0.18, p = 0.03), and total PA (rho = 0.26, p = 0.002).ConclusionsThe results suggest that the IPAQ-SF test and retest would provide an acceptable measure of total SB and MVPA, and a weak correlation between IPAQ-SF and accelerometer.</div
Psychometric Properties of the Brazilian 12-Item Short-Form Health Survey Version 2 (SF-12v2)
No full textThe 12-Item Short-Form Health Survey, in its initial (SF-12) and revised form (SF-12v2) is a widely used measure to evaluate health-related quality of life (HRQoL). The present study evaluates the factor structure and reliability of the Brazilian version of the SF-12v2. Participants were 627 subjects (74.1% women), aged from 18 to 88 years (M = 38.6; SD = 13.16), from 17 Brazilian states. Confirmatory factor analyses suggested two pairs of error terms to be highly correlated (3a-3b; and 4a-4b). A qualitative inspection showed an overlap of content among these items. The respecified model presented adequate fit indices. Convergent validity was also tested with measures of health-related self-care, subjective happiness, life satisfaction, depression and self-efficacy. Expected correlations were found between the SF-12v2 and these measures. Results showed initial evidence in favor of using the SF-12v2 as a measure of physical and mental health in the Brazilian context
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