Regular physical activity-related awareness and knowledge in Portugal: results from a population-based survey.

BACKGROUND: Previous studies have shown that adequate physical activity (PA, defined as any bodily movement that requires energy expenditure) related awareness and knowledge is crucial to promote regular PA. Therefore, this study aims to characterize PA awareness and knowledge, and to quantify its association with sociodemographic characteristics, health literacy and frequency of exercise. METHODS: In a cross-sectional study conducted in 2012, a total of 1624 Portuguese-speaking residents of mainland Portugal (16-79 years old) were assessed through face-to-face interviews using a structured questionnaire. Adjusted prevalence ratios, calculated using Poisson regression, were used to quantify associations with PA awareness and knowledge. RESULTS: The most reported benefits of PA were "reduces abdominal fat accumulation" (95.8%), "reduces myocardial infarction risk" (92.9%) and "improves bone health" (90.7%), these were less referred by older participants, while more often identified by those who exercise daily. The most referred barrier for people to not practice PA regularly was "lack of time" (33.9%) with differences observed by sex, age, education, employment and health literacy. Over two-thirds of participants correctly identified at least 2 of 3 PAs ("running", "soccer" and "tennis") that require the most energy, particularly males, those with higher health literacy and who exercise twice or more times a week. CONCLUSIONS: An adequate PA-related awareness and knowledge was observed, and differences according to age, health literacy levels and frequency of exercise were found. As such, awareness-raising interventions to increase regular PA through improving physical literacy and motivation should focus on older adults, those with limited health literacy and who do not exercise.

Validation of the Short Assessment of Health Literacy in Portuguese-speaking adults in Portugal / Validación del Short Assessment of Health Literacy in Portuguese-speaking adults en Portugal

OBJECTIVE: To validate the Brazilian version of the Short Assessment of Health Literacy in Portuguese-speaking Adults (SAHLPA), a 50-item test proposed as a particularly helpful instrument to assess health literacy in people with limited skills, in the Portuguese population. METHODS: We used the standard procedure for cultural adaptation and administered the instrument to 249 participants. We examined construct validity using groups with expectedly increasing levels of health literacy (laypersons from the general population, engineering researchers, health researchers, and physicians), and through association with age and educational attainment, dichotomizing scores at the median of the layperson's group. RESULTS: Exploratory factor analysis revealed the instrument was one-dimensional and justified reduction to 33 items. SAHLPA-33 displayed adequate reliability (Cronbach's α = 0.73). The frequency of limited health literacy was highest among laypersons and lowest among physicians (p <0.001; p for trend <0.001). The proportion of participants with limited health literacy decreased with increasing education attainment (age- and sex-adjusted p for trend <0.001). Limited health literacy also tended to decrease with age, although the association was non-significant (sex- and education-adjusted p for trend = 0.067). CONCLUSION: We culturally adapted a brief and simple instrument for health literacy assessment, and showed it was valid and fairly reliable. In Portuguese low-literate adults, SAHLPA-33 fills the gap in health literacy assessment instruments, and may be used to guide communication strategies with vulnerable patients and communities

OBJETIVO: Validar la versión brasileña del Short Assessment of Health Literacy inPortuguese-speakingAdults (SAHLPA), una prueba de 50 ítems que ha sido propuesta como una herramienta particularmente útil para evaluar la alfabetización en salud en personas con bajas competencias, en la población portuguesa. MÉTODOS: Se usó el procedimiento habitual para la adaptación cultural. El instrumento fue administrado a 249 participantes. Se evaluó la validez de constructo utilizando grupos con niveles esperados crecientes de alfabetización en salud (personas no cualificadas de la población general, investigadores en el área de la ingeniería, investigadores en salud y médicos) y a través de la asociación con la edad y la escolaridad, dicotomizando las puntuaciones por la mediana de las del grupo de la población general. RESULTADOS: El análisis factorial exploratorio reveló que el instrumento era unidimensional y así ha sido reducido a 33 ítems. El SAHLPA-33 reveló una consistencia interna aceptable (α de Cronbach = 0,73). La frecuencia de alfabetización en salud limitada fue más elevada en la población general y menor en los médicos (p <0,001; p para la tendencia <0,001). La proporción de participantes con alfabetización en salud limitada disminuyó con el aumento de la escolaridad (p para la tendencia ajustada por edad y sexo <0,001). La alfabetización en salud también tendió a disminuir con la edad, aunque la asociación no era significativa (p para la tendencia ajustada por sexo y escolaridad = 0,067). CONCLUSIÓN: Se adaptó un instrumento simple y rápido para evaluar la alfabetización en salud individual y se mostró que era válido y razonablemente fiable. En los adultos portugueses con bajo nivel de alfabetización, SAHLPA-33 llena el vacío en instrumentos de evaluación de alfabetización en salud. Puede utilizarse para guiar estrategias de comunicación con personas y comunidades vulnerables

Validation of the Short Assessment of Health Literacy in Portuguese-speaking Adults in Portugal.

OBJECTIVE: To validate the Brazilian version of the Short Assessment of Health Literacy in Portuguese-speaking Adults (SAHLPA), a 50-item test proposed as a particularly helpful instrument to assess health literacy in people with limited skills, in the Portuguese population. METHODS: We used the standard procedure for cultural adaptation and administered the instrument to 249 participants. We examined construct validity using groups with expectedly increasing levels of health literacy (laypersons from the general population, engineering researchers, health researchers, and physicians), and through association with age and educational attainment, dichotomizing scores at the median of the layperson's group. RESULTS: Exploratory factor analysis revealed the instrument was one-dimensional and justified reduction to 33 items. SAHLPA-33 displayed adequate reliability (Cronbach's α = 0.73). The frequency of limited health literacy was highest among laypersons and lowest among physicians (p <0.001; p for trend <0.001). The proportion of participants with limited health literacy decreased with increasing education attainment (age- and sex-adjusted p for trend <0.001). Limited health literacy also tended to decrease with age, although the association was non-significant (sex- and education-adjusted p for trend = 0.067). CONCLUSION: We culturally adapted a brief and simple instrument for health literacy assessment, and showed it was valid and fairly reliable. In Portuguese low-literate adults, SAHLPA-33 fills the gap in health literacy assessment instruments, and may be used to guide communication strategies with vulnerable patients and communities.

Prostate cancer screening in Portugal: prevalence and perception of potential benefits and adverse effects.

INTRODUCTION: Opportunistic screening for prostate cancer has been widely used, though organized programs are not recommended. We aimed to estimate the prevalence of prostate cancer screening and the perception of potential benefits and harms of screening, among the Portuguese general population. METHODS: A representative sample of Portuguese-speaking inhabitants in mainland Portugal was selected, using a stratified probabilistic sampling procedure; men above 40 were considered for analysis (n = 414). Data on sociodemographic characteristics, lifetime use and usual frequency of prostate cancer screening (prostate-specific antigen test or digital rectal examination) and perception of potential benefits and adverse effects of cancer screening were assessed using face-to-face interviews, by structured questionnaire. RESULTS: The proportion of participants who reported having been submitted to prostate cancer screening at least once in their lifetime was 44.2% (95% confidence interval: 37.5-51.0; 13.8% only digital rectal examination, 12.2% only prostate-specific antigen test, and 18.2% digital rectal examination and prostate-specific antigen test). As potential benefits of cancer screening, the options "knowledge of not having the disease", "earlier detection" and "more effective treatment" were selected by 55.8%, 12.9% and 31.3% of the participants, respectively. Regarding potential adverse effects, the most and least frequently identified were 'anxiety while waiting for the results' (55.1%) and 'false negatives' (38.0%), respectively. CONCLUSIONS: Almost half of the men between 40 and 79 years old declared that they have been screened for prostate cancer. Nearly one-third of the participants considered that reassurance of a negative result was the main potential benefit of screening, whereas most failed to identify the most frequent adverse effects.

Cancer-related knowledge and health status among cancer survivors in Portugal / Conocimiento sobre el cáncer y estado de salud en sobrevivientes de cáncer en Portugal

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Knowledge about cardiovascular disease in Portugal.

OBJECTIVES: To characterize specific knowledge on cardiovascular disease, particularly stroke and myocardial infarction (MI), and its relationship with sociodemographic factors, health literacy and clinical history, among the Portuguese population. METHODS: In a cross-sectional study conducted in 2012, a total of 1624 Portuguese-speaking residents of mainland Portugal, aged between 16 and 79 years, were assessed through face-to-face interviews using a structured questionnaire. RESULTS: Around 30% of participants were unable to estimate the risk of MI or stroke. On average, those who responded estimated that 34.2% and 35.6% of Portuguese will suffer a stroke or MI, respectively, during their lifetime. "Not smoking" (36.8%) and a "healthy diet" (32.8%) were identified as the most important behaviors for prevention of cardiovascular disease, and less than half of the participants responded that the most appropriate option in the presence of acute cardiovascular signs or symptoms was to call the emergency number. "Dependence on daily activities" (90.7%) and "impaired speech" (89.8%) were frequently recognized as consequences of stroke, while "heart failure" (86.4%) and "dependence on daily activities" (85.3%) were the most frequently identified consequences of MI. Overall, participants with adequate health literacy revealed more appropriate cardiovascular health-related knowledge. CONCLUSIONS: There are important gaps in cardiovascular health-related knowledge in the Portuguese population. Health education strategies and practices should be sensitive to the differences in health literacy described herein, in order to improve cardiovascular health knowledge among the Portuguese population.

Health-related knowledge on hypertension among the Portuguese population: results from a population-based survey.

PURPOSE: Adequate knowledge on hypertension has been shown to improve awareness, adherence to treatment and control of the disease. We aimed to estimate the health-related knowledge about hypertension among the Portuguese population. MATERIALS AND METHODS: A representative sample of Portuguese-speaking dwellers in mainland Portugal (n = 1624), aged 16 to 79 years, was evaluated through face-to-face interviews conducted using a structured questionnaire. Health literacy was evaluated using the instrument Newest Vital Sign. RESULTS: The mean prevalence of hypertension in the Portuguese population estimated by the participants in this study was 45.4%. Salt intake and poor diet were reported as main causes of hypertension by 27.5% and 21.5% of the participants, respectively, whereas more than 85% acknowledged myocardial infarction and stroke as its main consequences. However, 31.2% of the participants were not able to identify a cause for high blood pressure, especially the older and those with worse scores for health literacy. The accurate interpretation of blood pressure values diminished with the increase of systolic and diastolic blood pressure figures provided as examples for interpretation, from approximately 80% for 95/60 mmHg to 50% for 180/100 mmHg. Women and participants with greater levels of education or a previous diagnosis of hypertension tended to interpret blood pressure values correctly more often. CONCLUSIONS: This study provided a quantitative estimate of the gaps in health-related knowledge about hypertension among the general population. Understanding the barriers that hinder the achievement of health-related knowledge on hypertension is expected to contribute for the global improvement of prevention and management of hypertension.

Cancer screening in Portugal: sex differences in prevalence, awareness of organized programmes and perception of benefits and adverse effects.

BACKGROUND: Cancer screening has contributed to downward trends in cancer mortality, but is also associated with adverse effects, which highlights the importance of promoting the participation based on informed decisions. OBJECTIVES: We aimed to describe the use of cancer screening (either in organized programmes or as opportunistic screening), awareness of organized programmes and perception of its potential benefits and adverse effects, depicting possible sex differences. DESIGN AND METHODS: We evaluated 1624 Portuguese-speaking dwellers, aged between 16 and 79 years, through face-to-face interviews. To quantify sex differences, adjusted prevalence ratios and respective 95% confidence intervals were computed using Poisson regression. RESULTS: Among eligible age groups, the lifetime prevalence of screening for breast and cervical cancers was 89.8 and 71.9%, respectively. The prevalence was 23.7% for colorectal cancer and no significant sex differences were observed. Prostate cancer screening was reported by 63.8% of men. Over half of the participants referred that cancers such as prostate, skin, lung and stomach should be screened for, in addition to those for which organized programmes are recommended. Reassurance by negative results was identified as the main potential benefit of screening by nearly one-third of men and women. Anxiety while waiting for results was the most mentioned potential adverse effect (60.4%); men refer less often this and financial costs, although statistical significance of these results was borderline. CONCLUSIONS: This study provides a benchmark to plan and monitor the effects of awareness-raising interventions, as well as for international comparisons across countries with different cancer prevention and control structures.

Limited Health Literacy in Portugal Assessed with the Newest Vital Sign.

INTRODUCTION: In Portugal, health literacy has started to be addressed through national policies, but research on the topic is still scarce. We aimed to estimate the prevalence and sociodemographic correlates of limited health literacy in Portugal using an existing health literacy instrument, the Newest Vital Sign. MATERIALS AND METHODS: Following cross-cultural adaptation of the instrument, a sample of 249 participants was evaluated to assess reliability and construct validity of the Newest Vital Sign; the latter was tested assuming physicians would score highest, followed by health researchers, then by engineering researchers and finally by laypersons from the general population. We applied this validated version in a representative sample of 1544 Portuguese-speaking residents in Portugal aged between 16 and 79 years and quantified the associations between limited health literacy and sociodemographic characteristics. RESULTS: The instrument showed high reliability (Cronbach's α = 0.85). Health-related occupation showed association with higher scores in the Newest Vital Sign (p trend < 0.001). The prevalence of limited health literacy in the Portuguese population was 72.9% (95% CI: 69.4 - 76.4). We found no differences between men and women, but persons with limited health literacy were significantly older (p < 0.001) and less educated (p < 0.001). DISCUSSION: The burden of limited health literacy in Portugal is higher than that in other European countries. It should drive a universal precautions approach to health communication at all levels of the health system. CONCLUSION: We validated a brief and simple instrument and estimated the prevalence of limited health literacy in the literate Portuguese population at roughly three out of four people.

Introdução: A literacia em saúde começa a ser alvo de políticas de saúde em Portugal, mas a investigação neste tema ainda é escassa. Pretendemos estimar a prevalência de literacia em saúde inadequada e os fatores sociodemográficos associados em Portugal, utilizando um instrumento de avaliação da literacia em saúde já existente, o Newest Vital Sign. Material e Métodos: Após adaptação transcultural do instrumento, avaliámos uma amostra de 249 participantes para examinar fiabilidade e validade de constructo do Newest Vital Sign; esta última foi testada assumindo que os médicos teriam pontuação máxima, seguidos por investigadores na área da saúde, investigadores na área da engenharia e finalmente por leigos da população geral. Em seguida, aplicámos a versão validada numa amostra representativa de 1554 pessoas, residentes em Portugal, entre os 16 e os 79 anos, e quantificámos as associações entre literacia em saúde inadequada e caraterísticas sociodemográficas. Resultados: O instrumento revelou elevada fiabilidade (α de Cronbach = 0,85). A profissão ligada à saúde associou-se a pontuações mais elevadas no Newest Vital Sign (p para a tendência < 0,001). A prevalência de literacia em saúde inadequada na população portuguesa foi de 72,9% (IC 95%: 69,4 - 76,4). Não encontrámos diferenças entre homens e mulheres, mas as pessoas com literacia em saúde inadequada eram significativamente mais velhas (p < 0,001) e com menor escolaridade (p < 0,001). Discussão: A carga de literacia em saúde inadequada em Portugal é mais alta do que a observada noutros países europeus. Esta deve conduzir a medidas de precaução universais no âmbito da comunicação em saúde, a todos os níveis de cuidados. Conclusão: Adaptámos um instrumento breve e simples e estimámos que, na população portuguesa alfabetizada, três em cada quatro pessoas possuem literacia em saúde inadequada.

Health-related knowledge of primary prevention of cancer in Portugal.

The increasing number of new cases of cancer highlights the relevance of primary prevention for cancer control, which is influenced, among other factors, by the population's health-related knowledge. Therefore, we aimed to describe cancer-related knowledge in Portugal, including perception of risk, awareness of cancer causes and preventive behaviours. We evaluated 1624 Portuguese-speaking dwellers, aged between 16 and 79 years, through face-to-face interviews conducted using a structured questionnaire. We computed adjusted (sex, age, education) regression coefficients and prevalence ratios, using linear and Poisson regression, respectively, to quantify associations with cancer-specific knowledge. The proportions of nonresponse ranged from 13.4 to 63.5% for the most frequent cancer in Portugal and the leading cause of cancer, respectively. The mean of the estimated lifetime risk of cancer in the Portuguese population was 37.0%. A total of 47.5% of the respondents identified breast cancer as the most frequent in Portugal, 72.0% named lifestyles as the leading cause of cancer and 40.2% selected not smoking as the most important preventive behaviour. Lower levels of education were associated with higher proportions of nonresponse, but not consistently with inaccurate knowledge. Men provided lower estimates of the lifetime risk of cancer, indicated breast cancer less frequently and more often lung cancer as the most frequent, and were more likely to select not smoking as the most important preventive behaviour. The present study provides relevant data on knowledge of cancer prevention, which may be used for the planning and evaluation of awareness-raising and primary prevention interventions in Portugal.