Introduction Excessive Internet use can negatively affect academic performance, family relationships and emotional development among the youth. Such issues have been identified as Internet addiction (IA). We aimed to determine the prevalence of IA among Portuguese adolescents and assess how parental control can relate to IA. Methods An observational cross-sectional study was performed at public schools within a Portuguese region, using Young’s Internet Addiction Test survey. General sociodemographic and emotional well-being data were obtained. A descriptive and bivariate analysis was done among Internet-addicted and average users, followed by a logistic regression analysis. Adjusted odds ratios (aORs) were computed with two-sided P values < .05 for statistical significance. Results A total of 1916 eligible responses were obtained. Mean age was 15 ± 1.8 years, with a slight predominance of female (53.3%) participants. In our sample, 16.5% were deemed Internet addicted and less likely to have any parental control over Internet use (aOR 0.74, P <.05). Moreover, 28% of the Internet-addicted users were less likely to have control over time spent online (aOR 0.72, P < .05), and close to half were unlikely to have online content restrictions (aOR 0.56, P < .01). Conclusions Our findings reported a significant rate of Internet-addicted youth. IA was negatively related to parental control. Whenever any kind of parental control over Internet use was reported, IA was less likely to occur. Healthcare professionals should be aware of the risks of IA in adolescents to improve its prevention and intervention.

The configuration space of points on a D-dimensional smooth framed manifold may be compactified so as to admit a right action over the framed little D-disks operad. We construct a real combinatorial model for these modules, for compact smooth manifolds without boundary. Contents 1. Introduction 1 2. Compactified configuration spaces 5 3. The Cattaneo-Felder-Mnev graph complex and operad 7 4. Twisting Gra M and the co-module * Graphs M 10 5. Cohomology of the CFM (co)operad 14 6. The non-parallelizable case 21 7. A simplification of * Graphs M and relations to the literature 23 8. The real homotopy type of M and FM M 29 9. The framed case in dimension D = 2 33 Appendix A. Remark: Comparison to the Lambrechts-Stanley model through cyclic C ∞ algebras 36 Appendix B. Example computation: The partition function of the 2-sphere 38 Appendix C. Pushforward of PA forms 41 References 43 * Graphs M ⊂ * Graphs M that still comes with a map of dg Hopf collections * Graphs M → Ω PA (FM M ).Our first main result is the following.1 A (dg) Hopf collection C for us is a sequence C(r) of dg commutative algebras, with actions of the symmetric groups S r . A (dg) Hopf cooperad is a cooperad in dg commutative algebras.

SynopsisA new semistructured instrument, the Standardized Polyvalent Psychiatric Interview or SPPI has been developed primarily for assessing medical patients. It has been built on the Clinical Interview Schedule and is intended to evaluate individuals in a multiaxial schema: psychopathology, including duration and severity of disorder; somatic disturbance; social problems and social supports: and pre-morbid personality, with especial emphasis on ‘neuroticism’. The SPPI generates enough information to allow the use of different research diagnostic criteria, including DSM-III-R, ICD-10 and Goldberg's criteria of ‘attribution’ of somatic symptoms and ‘relationships between psychiatric and physical disorder’. It also includes a section related to recommended treatment. The new interview fulfils standards of feasibility, face and content validity. An incomplete block design, inter-rater reliability study was carried out with a consecutive sample of 48 out-patients referred to the Psychosomatic-Liaison Service of the University Hospital of Zaragoza. A broad range of agreement coefficients were calculated, the results being quite acceptable (most kappas are in the range from 0·7 to 0·9) and tending to support the procedural validity of the interview.

The objective of this paper is to study the prevalence and clinical characteristics of functional, hypochondriacal, and presenting somatization (FSTS, HSTS, and PSTS, respectively) defined by standardized criteria, as well as the validity of their distinction in primary care in Spain. A two-stage epidemiological study of a representative sample (N = 1559) of primary care patients was carried out. In the first phase, the validated Spanish versions of General Health Questionnaire, Mini-Mental State Examination, and CAGE were used. In the second phase, the Standardized Polyvalent Psychiatric Interview, an interview for the multiaxial assessment of medical patients, was employed. The prevalence of any form of somatization in Spain was 21.3% (FSTS: 16.2%, PSTS: 9.4%, HSTS: 6.7%). Overlap of any of the three clinical forms was very frequent (42.7%). FSTS patients tended to be more chronic and showed higher scores in fatigue but lower scores in both depression and anxiety. Chronicity was frequent among somatizers, particularly in those who fulfilled more than one kind of somatization. Differences in diagnostic distribution among the three groups were also observed. In conclusion, this is the first study giving support to the validity of the distinction among three types of somatization in Spain, but overlap was more frequent than reported in North American studies.