Cognition and the risk of eating disorders in Spanish adolescents: the AVENA and AFINOS studies.

UNLABELLED: Eating disorders (ED) can arise from a combination of biological and psychological factors. Some studies suggest that intellectual factors might be important in the development of ED, although the evidence is still scarce. The aim of this study was to examine the association between cognition measurements (cognitive performance and academic achievement) and the risk of developing ED in adolescents considering their weight status. The sample consisted of 3,307 adolescents (1,756 girls), aged 13-18.5 years, who participated in the AVENA (n = 1,430; 783 girls) and AFINOS (n = 1,877; 973 girls) studies. Cognitive performance was measured by the TEA test in the AVENA study, and academic achievement was self-reported in the AFINOS study. ED risk was evaluated in both studies by using the SCOFF questionnaire. Body mass index was calculated to classify adolescents as non-overweight or overweight (including obesity). Overweight adolescents showed a higher risk of developing ED than non-overweight ones in both studies. In the AVENA study, overweight boys with low performance in reasoning ability showed increased risk of ED (p = 0.05). In the AFINOS study, overweight boys with low academic performance in physical education and non-overweight girls with low academic achievement in all the areas analyzed showed higher risk of ED than their peers (all p < 0.05). CONCLUSION: No association between cognitive performance and ED risk was found in adolescents, while academic achievement was associated with ED risk, especially in non-overweight girls. The non-cognitive traits that accompany academic achievement could influence the likelihood of developing ED in these girls.

Physical fitness, overweight and the risk of eating disorders in adolescents. The AVENA and AFINOS studies.

UNLABELLED: What is already known about this subject Eating disorders are among the public health issues facing adolescents. An excess of body fat has been associated with an increased risk of these disorders. The association of physical fitness with eating disorders has not yet been analysed in adolescents. What this study adds This study confirms that the overweight and obesity increase the risk of developing eating disorders. The present study shows that there is an inverse association between physical fitness levels and the risk of eating disorders. This study suggests that physical fitness might attenuate the influence of overweight on the development of eating disorders in adolescents. BACKGROUND: Eating disorders together with the overweight and obesity are important health concerns in adolescents. OBJECTIVE: To analyse the individual and combined influence of overweight and physical fitness on the risk of developing eating disorders in Spanish adolescents. METHODS: The sample consisted of 3571 adolescents (1864 females), aged 13 to 18.5 years, from Spain who participated in the AVENA and AFINOS studies. The risk of eating disorders was evaluated using the SCOFF questionnaire. Body mass index was calculated and the adolescents were classified into two groups: overweight (including obesity) and non-overweight according to Cole's cut-off points. Cardiorespiratory fitness in the AVENA Study was assessed by the 20-m shuttle-run test and the overall physical fitness level was self-reported in the AFINOS Study. RESULTS: Overweight adolescents had a higher risk of developing eating disorders than non-overweight adolescents (odds ratio [OR] = 4.91, 95% confidence interval [CI]: 3.63-6.61 in the AVENA Study and OR = 2.45, 95% CI: 1.83-3.22 in the AFINOS Study). Also, adolescents with medium and low levels of physical fitness had a higher risk of developing eating disorders (OR = 1.51, 95% CI: 1.05-2.16, and OR = 2.25, 95% CI: 1.60-3.19, respectively, in the AVENA Study, and OR = 1.73, 95% CI: 1.37-2.17, and OR = 4.11 95% CI: 2.98-5.65, respectively, in the AFINOS Study) than adolescents with high levels of physical fitness. In both studies, the combined influence of overweight and physical fitness showed that adolescents with lower levels of physical fitness had an increased risk of developing eating disorders in both non-overweight and overweight groups. CONCLUSIONS: Physical fitness might attenuate the influence of overweight on the development of eating disorders in adolescents.

Preliminary evidence of physical activity levels measured by accelerometer in Spanish adolescents: the AFINOS Study.

BACKGROUND: It is necessary to know the levels of physical activity (PA) for a better understanding of the development of chronic diseases in youth. The aim of this study was to assess levels of total PA and time spent in different PAintensities in Spanish adolescents by accelerometer. METHODS: A sub-sample of 214 healthy Spanish adolescents (107 females), aged 13-16 years, enrolled in the AFINOS Study was selected for this study. Participants wore the ActiGraph GT1M accelerometer for 7 consecutive days. Total PA and time spent in sedentary, light, moderate, vigorous, and moderate to vigorous physical activity (MVPA) was estimated using the accelerometer. Adiposity was measured in the sample using sum of 6 skinfoldthickness, waist circumference and BMI. RESULTS: Adolescent boys were engaged in higher levels of total PA, moderate PA, vigorous PA and MVPA than adolescent girls, whereas girls were engaged in higher levels of light PA. Differences between age groups showed that the 15-16 years group did more total PA (P = 0.008) than the 13-14 years group. Adolescents with highest levels of body fat were less active and spent less time in vigorous PA and MVPA than adolescents with less body fat. Among the current sample, 71.1% of the adolescents (82.2% adolescent boys and 60.7% adolescent girls) reached the recommendation of > or = 60 min in MVPA. CONCLUSIONS: Although these findings suggest that Spanish adolescents have similar PA levels than other European adolescents, further cross-sectional and longitudinal studies must assess PA levels in free-living conditions in Spanish children and adolescents using objective methods such as accelerometers, heart rate monitors and pedometers.

[Burnout syndrome epidemiology]. / Epidemiología del síndrome de burnout.

The burnout syndrome constitutes a process which bears high prevalence and important consequences among sanitary professionals, particularly among nurses. Therefore, the authors have proposed to study the three dimensions of this syndrome, namely emotional tiredness, depersonalization and lack of a sense of achievement plus the function certain personal, labor, and institutional factors have in development of this process. The authors carried out a transversal study based on a random sample from among all the nursing staff at a Madrid hospital. Two methods to gather information were employed: one questionnaire gathered sociodemographic data, labor and institutional variables while the Maslach Burnout Inventory (MBI), in its verified Spanish version, studied the three burnout syndrome dimensions. The authors made a multiple logistical regression analysis, using as dependent variables the three syndrome scales and adjusting parameters for all the other variables. Clear risk factors were shown; these included unfavorable opinions professionals hold regarding institutional variables; the scale for emotional tiredness warrants special note.

Impact of cumulative area-based adverse socioeconomic environment on body mass index and overweight.

OBJECTIVE: Although the relationship between area socioeconomic environment and obesity is known, previous research has measured area socioeconomic environment at only one point in time. This study evaluates the relationship of cumulative area-based adverse socioeconomic environment with body mass index (BMI) and overweight. DESIGN: Cross-sectional study. SETTING: Spain. PARTICIPANTS: 17 917 subjects in 2001. MAIN OUTCOME MEASURE: Information from 1980, 1990 and 2000 was used for the percentage of the population with low educational achievement, gross domestic product per capita (GDPpc), and Gini coefficient to estimate BMI and prevalence of overweight by the number of times each province had an adverse exposure to each of these measures of socioeconomic environment. RESULTS: After adjusting for individual variables and sports facilities in the area, the difference in BMI in residents of provinces with the highest percentage of population with low educational achievement in 1980, 1990 and 2000, compared with residents of provinces with no history of adverse socioeconomic environment based on this indicator, was 0.61 kg/m(2), whereas the prevalence of overweight was 1.46 times higher. Similar results were obtained for residents of provinces with cumulative low GDPpc versus residents of provinces that had never had low GDPpc. Neither BMI nor overweight were associated with cumulative income inequality based on the Gini coefficient. CONCLUSION: Cumulative adverse socioeconomic environment based on indicators of educational level or wealth, but not of income inequality, is positively associated with BMI and overweight. This association is not explained by individual characteristics or by the availability of sports facilities.

[Burnout syndrome among nursing staff at a hospital in Madrid]. / Síndrome de Burnout en el personal de enfermería de un hospital de Madrid.

BACKGROUND: The term "burnout" is related to a situation arising increasingly more often among the professionals performing their duties by way of a long-term, direct, people-to-people relationship, which includes all healthcare professionals. This study is aimed at determining the prevalence of the Burnout syndrome and of the three components involved therein (emotional exhaustion, impersonalization and lack of personal fulfillment) among the nursing staff at the "Hospital Clínico Universitario San Carlos" in Madrid and the relationship thereof to certain socio-demographic, job-related and institutional factors. METHODS: A cross-sectional study was conducted among the professionals assigned to the nursing staff at the above-mentioned hospital. The variables involved were gathered by means of a questionnaire prepared by those conducting this study. The Burnout syndrome was measured by means of the Maslach Burnout Inventory, in the validated Spanish version thereof. RESULTS: The nursing staff is more impersonalized (p=0.004) and less fulfilled (p=0.036) than the nursing assistant/technician group. When the results of the four scales by units were analyzed, burnout was found to be greater among the nursing staff assigned to oncology and emergency care units (p=0.001), the impersonalization in the emergency rooms (p=0.007), and Burnout is once again greater in the oncology and emergency units (p=0.000). Those professionals who answered that there was little recognition of their nursing care scored worst regarding Burnout and the three aspects thereof (p =0.000). The lower the degree of on-the-job satisfaction, the higher the scores on the four scales (p=0.000). CONCLUSIONS: The conclusion which may be drawn from this study is that the profile of a person affected by Burnout is that of a professional with on-the-job experience who nevertheless considers very little recognition to be given to their caregiving and a high degree of dissatisfaction with the way in which their workplaces are managed.

[Increase in differences in survival according to income per capita in Spain in the last quarter of the twentieth century]. / Incremento de la diferencia en la supervivencia según la renta per cápita en España en los últimos años del siglo XX.

OBJECTIVE: To estimate probability of survival in Spain from 1975 to 1995 according to income per capita quintiles. METHODS: The 50 provinces in Spain were ordered by income per capita in 1975, 1981, 1985, 1990 and 1995. For each quintile and year we estimated the probability of surviving 75 years from birth and the probability of survival in several age intervals in men and women. Probability was estimated by percentages. Subsequently, we calculated differences in the probability of survival between the highest and the lowest income per capita quintiles. RESULTS: Differences in the probability of surviving from birth to the age of 75 years increased from 1.3 in 1975 to 3.1 in 1995 in women, whereas in men the increase was from 0.1 in 1975 to 3.7 in 1995. CONCLUSIONS: In Spain, as in other developed countries, socioeconomic differences in premature mortality increased in the latter decades of the twentieth century.

Incremento de la diferencia en la supervivencia según la renta per cápita en España en los últimos años del siglo XX / Increase in differences in survival according to income per capita in Spain in the last quarter of the twentieth century

Objetivo: Estimar la probabilidad de supervivencia en España desde 1975 hasta 1995 según quintiles de renta per cápita. Métodos: En los años 1975, 1981, 1985, 1990 y 1995 se han ordenado las 50 provincias según su nivel de renta per cápita. En cada uno de los quintiles y en cada año se ha estimado la probabilidad de supervivencia hasta los 75 años de edad y la probabilidad de supervivencia entre diferentes tramos de edad en varones y mujeres. Estas probabilidades se han estimado en forma de porcentaje. Posteriormente, se ha calculado la diferencia entre las probabilidades de supervivencia en los quintiles con mayor renta y con menor renta per cápita. Resultados: La diferencia en la probabilidad de supervivencia hasta los 75 años aumentó de 1,3 en 1975 a 3,1 en 1995 en las mujeres, mientras que en los varones el aumento fue de 0,1 en 1975 a 3,7 en 1995.Conclusiones: En España, como en otros países desarrollados, durante los últimos años del siglo XX se produjo un aumento de las diferencias socioeconómicas relacionadas con la mortalidad prematura (AU)

Risk factors in miscarriage: a review.

Miscarriage is one of the most frequent problems in human pregnancy. The most widely accepted definition is that proposed by the World Health Organization (WHO) in 1977. The incidence among clinical pregnancies is about 12-15% but including early pregnancy losses it is 17-22%. The only two etiologic factors recognized by all authors are uterine malformations and parental balanced chromosomal rearrangements. There have been many other suggested risk factors. In this revision we discuss these.

Trends in cigarette smoking in Spain by social class.

OBJECTIVE: . The aim of this study was to evaluate smoking trends among Spanish men and women by social class between 1987 and 1997. METHODS: We used secondary analysis of the National Health Interview Surveys of 1987, 1993, 1995, and 1997. The main outcome measures were prevalence of smoking, smoking cessation activity (quit ratio), and smoking initiation in the manual and nonmanual social class in each year and smoking prevalence ratio, smoking cessation ratio, and smoking initiation ratio in 1997 versus 1987 in each social class. RESULTS: Among men ages 25 years and older the prevalence of smoking in both the manual and the nonmanual social class decreased between 1987 and 1997 in all age groups, and the relative magnitude of the decrease was always greater in the nonmanual social class. In contrast, among women the prevalence of smoking increased in both social classes: in the 25- to 44-year age group the smoking prevalence ratios in 1997 versus 1987 were 1.20 in the nonmanual social class and 1.61 in the manual social class, while in the 45- to 64-year age group the prevalence ratios were 2.52 and 2.15, respectively. The quit rate among men increased in both social classes in all age groups between 1987 and 1997; in contrast, among women the quit rate increased only among those ages 25 to 44 years in the nonmanual social class. Smoking prevalence for people ages 16 to 24 years--smoking initiation--decreased among men and women between 1987 and 1997 in both social classes. CONCLUSIONS: Smoking trends in Spain by social class have differed among men and women. The findings are considered in the context of policies and programs aimed at reducing smoking.

[Mortality by social and economic characteristics: The Mortality Study of the Autonomous Community of Madrid]. / Mortalidad según características sociales y económicas: Estudio de Mortalidad de la Comunidad Autónoma de Madrid.

BACKGROUND: To estimate the effect of marital status, household size, employment status, educational level and occupation on mortality. SUBJECTS AND METHOD: About 3,100,000 persons 24 years and older resident on first of May, 1996 in Autonomous Community of Madrid. For the next 19 months information on individuals who died were obtained by linking Mortality Register and 1996 Population Census. RESULTS: Except for household size, the effect on mortality of characteristics analysed was higher in individuals aged 25 to 44 years than in other group of age. In general, married persons had the lowest mortality, except for men older than 64 years where the lowest mortality was found in the never married category. Men aged 45 to 64 years who lived alone had higher mortality than those who lived with other people, while mortality in people aged older than 64 years increased with household size. Inactive persons had higher mortality than active people. Higher education level and higher skilled occupation were associated with lower mortality, except for women aged 45 to 64 years. CONCLUSIONS: This study has identified population groups associated with increased risk of mortality. Monitoring the trend of mortality in those groups will make possible to found the rational basis to implement social and health programmes.

[Changes in socioeconomic differences in the utilization of and accessibility to health services in Spain between 1987 and 1995/97]. / Evolución de las diferencias socioeconómicas en la utilización y accesibilidad de los servicios sanitarios en España entre 1987 y 1995/97.

BACKGROUND: The objective of this study is to evaluate the trend in the use and accessibility of health services in Spain between 1987 and 1995-1997 in groups with different socio-economic characteristics. METHODS: The data used are taken from National Health Surveys carried out on the adult population in 1987 and 1995-97 by the Ministry of Health and Consumer Affairs. The information for 1995 and 1997 has been combined due to the different sample size, in such a way that the estimates so obtained are the mean from both years. Population analysed has been people aged 24 years and older. The following have been studied: visits to the doctor, hospitalization, visits to the dentist and the gynecologist, the time taken to reach the visits to the doctor, and the waiting time in both the visits to the doctor and ordinary hospital admission. The socio-economic characteristics used are the level of education and the socio-economic group of the respondents. The measure of the association calculated between use of services and the socio-economic characteristics was the percentage ratio estimated by binomial regression. In addition, the relative index of inequality was estimated as a global measure of inequality. RESULTS: Visits to the doctor were the most frequent factor in people without academic qualifications and the lower socio-economic group in the two periods, while visits to the dentist and the gynecologist were more frequent in the higher socio-economic groups in both periods. Statistically significant differences in the frequency of hospitalization in the two periods were not found. Neither in 1987 nor 1995/1997 were statistically significant differences found between the different socio-economic groups as regards the time taken to visits to the doctor (p > 0.05), although there were in waiting time in visits to the doctor (p < 0.05). In the second period the socio-economic differences observed in the first period in waiting time for ordinary hospital admission disappeared. CONCLUSIONS: In the second half of the 1990s the same socio-economic profile was observed in the use of health services and the time spent waiting to receive them, as in the second half of the 1980s, with the exception of waiting time for ordinary hospital admission in the second period.

Adherence of mouse peritoneal macrophages following exposure to lead.

Lead is a toxin widely used in industry. Recently, medical investigation into lead exposure has turned to testing organ systems, such as the immune system, that historically were not associated with lead poisoning. We evaluated the effects of doses of 13, 130 or 1,300 ppm of lead on the adherence of mouse peritoneal cells, and particularly on macrophages. Cellular adherence was measured according to the De la Fuente technique. Adherence of macrophages showed significant changes in the 1,300 ppm group, revealing a reduction to 55% of the control group. The macrophage adherence index showed 91% sensitivity and 96% specificity. These results indicate a considerable reduction in the adherence of peritoneal macrophages following exposure to certain levels of lead.