Construct Validation of the Self-Efficacy Teaching and Knowledge Instrument for Science Teachers-Revised (SETAKIST-R): Lessons Learned.

Described herein is the academic lineage and independent validation of the Self-Efficacy Teaching and Knowledge Instrument for Science Teachers-Revised (SETAKIST-R). Data from 334 K-12 science teachers were analyzed using Partial Credit Rasch models. Principal components analysis on the person-item residuals suggest two latent dimensions: Knowledge and Teaching Self-Efficacies. Item-fit statistics were used to select items for each subscale. Person and item separation (reliability) indices were quite low, and we noted disordered response patterns on the person-item maps that revealed problems with item content and/or scaling for both subscales. These issues include the presence of: verbal negatives, ambiguous modifiers, counter-intuitive scaling, and an "undecided/uncertain" option. The SETAKIST-R, in its current form, cannot be recommended as a measure of science teacher self-efficacy.

Association between acculturation and structural assimilation and mini-mental state examination-assessed cognitive impairment in older Mexican Americans: findings from the San Antonio Longitudinal Study of Aging.

Older Mexican Americans (MAs) have consistently scored lower on the Folstein Mini-Mental State Examination (MMSE) than older European Americans (EAs). These lower scores may arise from factors other than those traditionally posited (age and education). Thus, this study examined the association between acculturation and structural assimilation and MMSE-assessed cognitive impairment, taking into account education, income, and other contextual factors. Subjects were participants in the San Antonio Longitudinal Study of Aging, a community-based study of chronic disease and functional status in 457 older MAs and 376 older EAs. Scales were used to measure two dimensions of acculturation: (family attitude, cultural values) and structural assimilation (functional integration into the broader American society). Logistic regression was used to examine the association between age, sex, acculturation, and structural assimilation and MMSE scores suggestive of cognitive impairment (<24). After adjusting for contextual factors (age, sex, education and household income), diseases (diabetes mellitus, stroke, and hypertension), and sensory impairments (hearing and vision), structural assimilation, but neither dimension of acculturation, was significantly and negatively associated with MMSE-assessed cognitive impairment. Older MAs in the lowest structural assimilation stratum were 1.89 times as likely to have MMSE-assessed cognitive impairment as those in the highest. Age, education, and visual impairment were also independently associated with cognitive impairment. These findings highlight the need for geriatricians to take contextual factors (including age, education, and structural assimilation) into account when interpreting MMSE scores of MA patients.

Potential mediators of ethnic differences in physical activity in older Mexican Americans and European Americans: results from the San Antonio Longitudinal Study of Aging.

Factors were examined that might explain reported ethnic differences in leisure time physical activity (LTPA) between Mexican Americans (MAs) and European Americans (EAs). Data were from a random sample of 749 community-dwelling MAs and EAs, aged 65 and older, who participated in the San Antonio Longitudinal Study of Aging (SALSA) baseline examination. Variables examined included LTPA measured as kilocalories of energy expended per week, contextual variables (age, sex, socioeconomic status (SES), acculturation/structural assimilation), psychosocial measures (self-esteem, mastery, perceived health control), lifestyle variables (fat avoidance, current alcohol drinker, years smoking, body mass index (BMI)), and presence of chronic diseases (diabetes mellitus, angina pectoris, myocardial infarction, stroke, hypertension, arthritis, chronic obstructive pulmonary disease, depression, mild cognitive impairment). Hierarchical multiple regression was used to examine potential mediators of the ethnic group-LTPA association. EAs expended almost 300 kcal/wk more energy than did MAs (1,287 kcal/wk vs 1,001 kcal/wk). SES and psychosocial (self-esteem), lifestyle (fat avoidance, smoking, BMI), and disease (depression) factors that vary by SES explained this ethnic difference. In MAs, structural assimilation, but not acculturation, was significantly associated with LTPA independent of SES. Self-esteem, BMI, and depression explained this association. Psychosocial resources, lifestyle behaviors, and depression explain differences in LTPA between older MAs and EAs. Interventions to increase LTPA in both ethnic groups should be targeted especially at women and persons who have low self-esteem, smoke, and are obese or depressed. In MAs, additional emphasis should be focused on those who are less structurally assimilated into the broader American society.

Do middle school students really have fixed images of elders?

OBJECTIVE: The purpose of this study was to determine whether combinations of characteristics, abstracted from drawings of elders made by middle school students, grouped together to form cohesive perceptions, or stereotypes, of human aging. METHODS: We abstracted 49 characteristics from drawings of elders made by 1,944 students at two middle schools in San Antonio, Texas, at the beginning of the 1998-1999 school year. Correlational and factor analyses were used to determine if there was an underlying structure or grouping to the characteristics. Logistic regression was used to determine the variables associated with the investigators' classification of the images as positive, neutral, or negative. RESULT: The standardized alpha coefficient for the 49 variables was low (alpha = 0.37). The Spearman rho correlations between the variables were also low, with 90.2% of the 1,176 comparisons being < 0.10. Exploratory factor analyses did not provide a useful grouping of characteristics drawn by the students, including analyses stratified by gender and restricted to the most common 34 characteristics. Among the 49 characteristics that emerged from the drawings, 11, 4, and 11 traits were directly associated with classifying the drawings as positive, neutral, or negative, respectively. DISCUSSION: These analyses indicate that middle school students have not formed strong images regarding aging: No clear cohesive stereotypes of elders emerged from the images drawn by these children. Absence of stereotypic views implies that middle school students may not have a built-in bias toward older people and age-associated changes. This suggests that young adolescents are at a point where instruction including gerontological content can be used to effectively teach about aging and health promotion.

Evaluation of the mini-mental state examination's internal consistency in a community-based sample of Mexican-American and European-American elders: results from the San Antonio Longitudinal Study of Aging.

This study examined the effect of scoring method, education, and language usage on internal consistency of the Folstein Mini-Mental State Examination (MMSE). Trained bilingual staff administered the MMSE in participants' homes as part of the San Antonio Longitudinal Study of Aging home-based assessment battery. Subjects included 833 community-dwelling Mexican-American (MA) and European-American (EA) elders, aged 65 and older, residing in three socioculturally distinct neighborhoods in San Antonio, Texas. Three methods of scoring the MMSE were examined: serial sevens only, spelling only, and serial sevens or spelling, whichever was higher. Mean MMSE scores+/-standard deviation ranged from 27.7+/-2.4 to 28.5+/-1.9 for EAs, from 25.6+/-3.2 to 27.2+/-2.9 for MAs interviewed in English, and from 22.5+/-4.5 to 25.5+/-3.5 for MAs interviewed in Spanish, depending on scoring method. Across the three ethnic-language subgroups, the lowest mean scores, largest coefficients of variation, and highest alpha coefficients were observed using serial sevens only. Stratification by educational level showed that alpha coefficients for all three scoring methods were consistently lower in high school graduates than in less-educated groups. Serial sevens only was the only scoring method that yielded acceptably high alpha coefficients across all ethnic, language, and education subgroups. Thus, clinicians should use the serial sevens-only method when administering the MMSE and be alert to the increased potential for false-negatives in more highly educated EA and MA elders, particularly in EAs and MAs proficient in English.

Prevalence and severity of urinary incontinence in elderly Mexican-American women.

OBJECTIVES: To measure prevalence and characteristics of urinary incontinence in older Mexican-American women. DESIGN: Cross-sectional analysis of a longitudinal survey of a representative sample of older Mexican Americans. SETTING: Five southwestern states in the United States. PARTICIPANTS: A total of 1589 Mexican-American women, aged 65 and older who were part of the Hispanic Established Population for the Epidemiologic Study of the Elderly. MEASUREMENTS: Self-reported psychosocial, demographic, and health variables; self-reported history of symptoms of urinary incontinence. RESULTS: Two hundred thirty-nine (15%) of the 1589 Mexican-American women reported having urinary incontinence. Almost 33% reported urge incontinence symptoms, 10% reported stress incontinence symptoms, and 42% had symptoms suggestive of mixed incontinence. Thirty-five percent of subjects reported incontinence episodes with moderate to large amounts of urine loss, and 15% reported that their urinary symptoms kept them from engaging in social activities. Age and body mass index were risk factors for incontinence (P=.02 and P=.03, respectively). CONCLUSION: This is the first community-based survey examining rates of urinary incontinence in Mexican-American women. The prevalence of urinary incontinence may be lower in older Mexican-American women than in the general population. They may also have a higher percentage of urge as opposed to stress incontinence symptoms and may suffer from moderate to large volumes of urine loss associated with their incontinence episodes.

Sentence completion to assess children's views about aging.

PURPOSE: Sentence completion exercises require students to give open-ended responses to prompts. The first purpose of this article is to describe the method of sentence completion to assess middle-school children's attitudes and beliefs about aging. The second purpose is to describe the patterns of characteristics that children associate with aging. DESIGN AND METHODS: Two middle schools in San Antonio, TX agreed to have their students participate in the sentence completion exercises at the beginning of the 1998-1999 school year. Teachers asked students to write responses to the following prompts: "Old is.," "You know you are old when.," "You know your parents are old when.," "When I am old, I.," and "Old people." We coded the responses for their characteristics and whether they were positive, negative, or neutral. RESULTS: Of the 2,476 students, 1,874 (75.6%) wrote responses to at least one prompt. Overall, we collected 3,700 responses and coded 9,438 characteristics (2.6 characteristics per response). The most common characteristics of aging were having wrinkles (21.1%), having gray hair or being bald (20.0%), and being less active (17.5%). Students had a much more positive view of their future (55.4%) compared with their view of aging elicited by the other prompts (range of 4.9-25.7% positive responses). Students infrequently associated old age with specific conditions; only 4.6% mentioned diseases, 6.0% mentioned being ill or taking medications, and 5.7% mentioned sensory problems. IMPLICATIONS: Middle-school students view their futures much more positively than the changes they observe in their parents and other elders. Students infrequently identified specific diseases or impairments as responsible for the changes they observe with aging. These observed responses provide a starting point for educators to develop and deliver gerontologically based materials that teach about healthful habits to maintain independence across a life span.

Getting the Word Out: Teaching Middle-School Children about Cardiovascular Disease.

Cardiovascular disease (CVD) has roots in childhood; since CVD begins early, a clear strong case for early education focused on CVD primary prevention exists. Scientists are not traditionally involved in disseminating health knowledge into public education. Similarly, public school teachers typically do not have access to biomedical research that may increase their students' health science literacy. One way to bridge the 'cultural' gap between researchers and school teachers is to form science education partnerships. In order for such partnerships to be successful, teams of scientists and teachers must 'translate' biomedical research into plain language appropriate for students.In this article, we briefly review the need for improving health literacy, especially through school-based programs, and describe work with one model scientist/teacher partnership, the Teacher Enrichment Initiatives. Examples of cardiovascular research 'translated' into plain language lessons for middle school students are provided and practical considerations for researchers pursuing a science education partnership are delineated.

Development and validation of a performance-based measure of upper extremity functional limitation.

BACKGROUND AND AIMS: While the standardized lower extremity physical performance battery (LEPPB) is widely used to measure lower body functional limitation, no corresponding measure has been developed for upper body functional limitation. We combined three standard measures (William's Hand Test, Hand Signature, Functional Reach) to develop an upper extremity physical performance battery (UEPPB) analogous to the LEPPB, and examined its validity. METHODS: We used baseline data from a community-dwelling cohort of 749 Mexican American and European American elders and combined times to complete the William's Hand Board, Hand Signature, and distance on Functional Reach into a single composite measure, using scoring methods analogous to those for the LEPPB. We summarize concurrent, discriminant, and construct validity evidence for the UEPPB, based on observed associations with established measures of physical functional limitation, disability, and dependence. RESULTS: All correlations were in the expected direction. Shared variance with self-reported upper and lower extremity functional limitation was 10 and 5%, respectively, and with self-reported ADL disability, ADL dependency, and IADL dependency it was 32, 26, and 31%, respectively. In multivariate models of self-reported and performance-based disability and dependency, the UEPPB and LEPPB made significant, independent contributions and, net of contextual variables (age, sex, ethnic group, education, income) explained 4 to 10% of the variance in disability and dependency. CONCLUSIONS: The UEPPB is a valid performance-based measure of upper extremity functional limitation and makes an independent contribution beyond LEPPB in explaining disability and dependence.

Measuring subclinical disability in older mexican americans.

OBJECTIVE: The purpose of this study was to develop a comprehensive list of adaptive strategies to prevent disability and use this information to devise a preliminary measure of subclinical disability (state of sustained independence in the presence of latent or manifest functional limitations) suitable for older Mexican Americans. METHOD: Semistructured interviews were conducted with 24 community-dwelling Mexican American elders (> or =65 years old) to elicit information about adaptations in performance of daily living tasks (eg, walking, dressing, and shopping) that may indicate presence of subclinical disability. This information was used to construct a quantitative self-report measure of subclinical disability administered to 207 older Mexican Americans. Item and factor analyses were performed to reduce the number of items and establish their underlying structure. Construct and discriminant validity of the reduced instrument was determined. RESULTS: A framework comprised of nine categories of daily living tasks, three functional levels, and five adaptation types was generated from the qualitative data. The initial 133-item measure (named the ADAPT) was reduced to a 44-item scale with three subscales (physical, household, and social). ADAPT scores correlated significantly in the expected direction with standard functional status measures, but the shared variance was modest, indicating that the ADAPT captured substantial, unique variance. Mean ADAPT scores differed significantly and were monotonically lower across subgroups classified as independent, subclinically disabled, and disabled, respectively. CONCLUSIONS: The ADAPT seems to have construct and discriminant validity as a measure of subclinical disability. Additional research is required to determine sensitivity to change and clinically significant cut points for varying risk of frank disability.