Michela Lenzi | Università degli Studi di Padova (original) (raw)

Papers by Michela Lenzi

International journal of public health, Jan 4, 2015

To analyze how dimensions of social capital at the individual level are associated with adolescen... more To analyze how dimensions of social capital at the individual level are associated with adolescent smoking and whether associations differ by socioeconomic status. Data were from the 'Health Behaviour in School-aged Children' study 2005/2006 including 6511 15-year-old adolescents from Flemish Belgium, Canada, Romania and England. Socioeconomic status was measured using the Family Affluence Scale (FAS). Social capital was indicated by friend-related social capital, participation in school and voluntary organizations, trust and reciprocity in family, neighborhood and school. We conducted pooled logistic regression models with interaction terms and tested for cross-national differences. Almost all dimensions of social capital were associated with a lower likelihood of smoking, except for friend-related social capital and school participation. The association of family-related social capital with smoking was significantly stronger for low FAS adolescents, whereas the association...

The Journal of school health, 2015

Given the severity of outcomes associated with involvement in bullying and the resources spent in... more Given the severity of outcomes associated with involvement in bullying and the resources spent in an effort to reduce its prevalence, it is important to investigate trends in the bullying's occurrence. The main aim of this study was to identify trends from 2002 to 2010 in prevalence of bullying and victimization among Italian adolescents. The survey reported here is part of the larger population-based cross-sectional (2002, 2006, and 2010) "Health Behaviour in School Aged Children" (HBSC) transnational study. The sample was comprised of 13,174 Italian middle and secondary school students (11- to 15-year-olds; 50.3% girls). Data were collected through a self-report questionnaire. Measures included involvement in bullying as either a perpetrator or a victim. Trends were determined using Gamma statistics. Consistent and robust decreases in the prevalence of bullying between 2002 and 2010 were detected in Italy. During this time frame both frequent and occasional bullying ...

Aims To estimate the role of family and socio-economic indicators of welfare state in accounting ... more Aims To estimate the role of family and socio-economic indicators of welfare state in accounting for probable problem
gambling during adolescence in a representative sample of students living in nine European countries. Design Data
from the 2011 European School Survey Project on Alcohol and Other Drugs (ESPAD) Study were used for crosssectional
analyses of adolescent probable problem gambling. Setting Representative surveys in nine European
countries. Participants A total of 31 236 16-year-old students. Measurements Respondents’ probable problem
gambling, socio-demographic characteristics and parenting (regulation, monitoring and caring) were measured individually.
Indicators of wealth (gross domestic product per capita, GDP), expenditure on public health (% GDP) and
benefit in kind for families/children (% GDP) were obtained from national public databases. Findings Students who
perceived more parental caring [odds ratio (OR) = 0.92, 95% confidence interval (CI) = 0.85–0.98] and monitoring
(OR = 0.57, 95% CI = 0.53–0.62) reported less involvement in probable problem gambling. Moreover, students who
perceived stronger parental regulation (OR = 1.16, 95% CI = 1.09–1.23) were more likely to be possible problematic
gamblers. At the country level, expenditure on public health was associated negatively with probable problem gambling
(OR = 0.87, 95% CI = 0.78–0.97), whereas GDP per capita (OR = 1, 95% CI = 1.00–1.00) and the benefits in
kind for families/children (OR = 1.16, 95% CI = 0.89–1.51) showed no association with probable problem gambling.
Conclusions Family characteristics and expenditure on public health may play a key role in explaining probable
problem gambling among adolescents in Europe.

We describe our test set-up used to read-out APV6 hybrids bonded to full size silicon detector mo... more We describe our test set-up used to read-out APV6 hybrids bonded to full size silicon detector modules [1] of the type built for the Forward Milestone. Choice of APV6 parameters is discussed and results with calibration pulses and MIPs are presented. ... We have designed our ...

Das Gesundheitswesen, 2013

Rare loop-induced decays are sensitive to New Physics in many Standard Model extensions. In this ... more Rare loop-induced decays are sensitive to New Physics in many Standard Model extensions. In this paper we discuss the potential of the LHCb experiment to very rare mathrmBstomu+mu−\mathrm{B_s} \to \mu^+ \mu^-mathrmBstomu+mu− decays, radiative penguin mathrmbtosgamma\mathrm{b \to s}\gammamathrmbtosgamma decays and electroweak penguin mathrmbtosellell\mathrm{b \to s\ell\ell}mathrmbtosellell decays. The experimental strategies and the expected sensitivities are presented.

Optics Communications, 1995

A new way of looking at the rates of the vibrational relaxation of SF6 molecules by rare gases le... more A new way of looking at the rates of the vibrational relaxation of SF6 molecules by rare gases leads to an empirical equation which rationalises data obtained by different experimental techniques. The obtained relationship, which correlates the relaxation probability with both the atomic mass of the colliding partner and the energy content of SF6) happens to be the first available

Optics Communications, 1989

Nonlinear absorption from a laser beam with a gaussian radial intensity profile causes a marked d... more Nonlinear absorption from a laser beam with a gaussian radial intensity profile causes a marked deformation of the profile itself which strongly depends on actual experimental conditions. A numerical procedure is discussed which can be used to convert the measured spatially averaged absorption data into the corresponding values at the axis of the initially gaussian beam.

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2001

The Journal of Chemical Physics, 1988

Chemical Physics Letters, 1996

The rotational line strengths of the O- and S-branches in the spin-forbidden emission ND are repo... more The rotational line strengths of the O- and S-branches in the spin-forbidden emission ND are reported and a comparison is made with the same quantities for NH that have been redetermined. This has led to the following conclusions: (i) In both radicals, a line by line agreement with Watson&amp;amp;#x27;s theoretical expressions has been observed. This is despite the neglect in

Chemical Physics, 1999

The linestrength of OP and SR branches of the PD (b1Σ+(v′=0)→X3Σ−(v″=0)) spin forbidden transitio... more The linestrength of OP and SR branches of the PD (b1Σ+(v′=0)→X3Σ−(v″=0)) spin forbidden transition, and the ratio μ‖/μ⊥ of transition moment components, are obtained by emission intensities in a microwave afterglow apparatus. Results from similar experiments on PH are also reported. A discussion by the point of view of isotope substitution leads to following conclusions: (1) the difference in μ‖/μ⊥

Chemical Physics, 1998

Attenuation measurements of infrared radiation from a TEA CO2 laser by mixtures of SF6 with He, N... more Attenuation measurements of infrared radiation from a TEA CO2 laser by mixtures of SF6 with He, Ne, Ar, Kr, and Xe coupled with calculations of multiple photon absorption in the presence of Gaussian radial density profiles of excited SF6 allows an estimate to be made of the relaxation rate coefficients by noble gases in the dense region of the vibrational

The findings on the association between Social Networking Sites and civic engagement are mixed. T... more The findings on the association between Social
Networking Sites and civic engagement are mixed. The
present study aims to evaluate a theoretical model linking
the informational use of Internet-based social media
(specifically, Facebook) with civic competencies and intentions
for future civic engagement, taking into account
the mediating role of civic discussions with family and
friends and sharing the news online. Participants were 114
Italian high school students aged 14–17 years (57 % boys).
Path analysis was used to evaluate the proposed theoretical
model. Results showed that Facebook informational use
was associated with higher levels of adolescent perceived
competence for civic action, both directly and through the
mediation of civic discussion with parents and friends
(offline). Higher levels of civic competencies, then, were
associated with a stronger intention to participate in the
civic domain in the future. Our findings suggest that
Facebook may provide adolescents with additional tools
through which they can learn civic activities or develop the
skills necessary to participate in the future.

Background: Electronic media has become a central part of the lives of adolescents. Therefore, th... more Background: Electronic media has become a central part of the lives of adolescents. Therefore, this study examines
trends in adolescent electronic media communication (EMC) and its relationship with ease of communication with
friends of the opposite sex, from 2002 to 10 in 30 European and North American regions. Methods: Data from the
HBSC study were collected using self-report questionnaires from 11-, 13- and 15-year-old participants (N= 404 523).
Results: EMC use has grown over the years in most of these regions and increases with age. Even though Internet
usage is often blamed for its negative effects on teenagers’ social interactions in the physical world, in this study
EMC was found to predict ease of communication with friends. Especially, the more they use EMC, the easier they
find it to talk with friends of the opposite sex. Although these findings suggest that EMC reinforces communication,
the interaction between year (2002–2006–2010) and EMC usage was not significant. Conclusion: This finding
contradicts research that suggests that EMC contributes to loneliness and isolation, and supports other studies that
present electronic media as a powerful tool for helping to connect people.

Background: Tobacco-related heath inequalities are a major public health concern, with smoking be... more Background: Tobacco-related heath inequalities are a major public health concern, with smoking being more
prevalent among lower socioeconomic groups. The aim of this study is to investigate the mechanisms leading
to socioeconomic inequalities in smoking among 15-year-old adolescents by examining the mediating role of
psychosocial factors in the peer group, family and school environment. Methods: Data were derived from the
international WHO-collaborative ‘Health Behaviour in School-aged Children (HBSC)’ study 2005/2006, including
52 907 15-year-old students from 35 European and North American countries. Socioeconomic position was
measured by the Family Affluence Scale. Multilevel logistic regression models were conducted to examine the
contribution of family, school and peer factors in explaining the association between family affluence and weekly
smoking. Results: Across countries, adolescents from low affluent families had an increased risk of weekly smoking
(ORboys 1.14, confidence interval (CI) 1.05–1.23; ORgirls 1.36, CI 1.26–1.46) compared with adolescents from high
affluent families. Family and school factors mediated the association between family affluence and smoking to a
high extent up to 100% (boys) and 81% (girls) in joint analyses. The most important single factors were family
structure, relationships with parents, academic achievement and school satisfaction. Peer factors did not mediate
the association between family affluence and adolescent smoking. Conclusion: The association between
socioeconomic status and adolescent weekly smoking can largely be explained by an unequal distribution of
family- and school-related factors. Focusing on the parent–adolescent relationship and adolescent school achievement
can help to better understand inequalities in adolescent smoking behaviour.