André Berchtold
Biographic Data
| ID | 229949 |
|---|---|
| NAME | André Berchtold |
| GIVEN NAMES | André |
| FAMILY NAME | Berchtold |
| SIGNATURE | BERCHTOLD A |
| AFFILIATIONS | University of Lausanne |
| ORCID | 0000-0002-0711-2254 |
| VERIFIED | Yes |
| TOTAL WORKS | 22 |
| TOTAL CITATIONS | 40 |
| AUTHOR COUNT | 22 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2002 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 4 |
Comparison of imputation methods for univariate categorical longitudinal data
The life course paradigm emphasizes the need to study not only the situation at a given point in time, but also its evolution over the life course in the medium and long term. These trajectories are often represented by categorical data. This article aims to provide a comprehensive review of the multiple imputation methods proposed so far in the context of univariate categorical data and to assess their practical relevance through a simulation st…
Age of tobacco, nicotine and cannabis use initiation in Switzerland: A sequence analysis among adolescents and young adults
Cigarettes remain the first product to be used, but the younger the respondents, the earlier they start using e-cigarettes, and very close to cigarettes. Regarding current consumption patterns, e-cigarettes are becoming increasingly prominent
Quality principles of retrospective data collected through a life history calendar
To assert the quality of retrospective data, most studies using tools such as life history calendars rely on comparisons with external sources. Our research aimed to integrate quality principles into a life history calendar and test their capacity to evaluate the data quality. The purpose was to avoid reliance on external data sources because of their possible unavailability. The first quality principle was the relationship between the dating acc…
Sending One's Own Intimate Image: Sexting Among Middle‐School Teens
BACKGROUND: There is a gap in the literature regarding data on sexting among youth under the age of 16 whereas the problems related to this practice could affect them more because of their ongoing development. This study aims to determine the prevalence rate and characteristics of sending one's own sexually related image among middle-school teens. METHODS: Data were obtained from a web-based in-school survey conducted between October 2019 and Feb…
Relationship between the Covid-19 Pandemic and the Well-Being of Adolescents and Their Parents in Switzerland
This study is based on two waves of data collected by the Swiss Household panel, the first one in 2019, before the beginning of the COVID-19 pandemic, and the second one in May-June 2020, just after the end of the partial lockdown that was decided by the Swiss government. We considered "couples" of adolescents (age 14-24, mean = 18.82, 51.96% female) and their parents living together ( n = 431). Our main goal was to determine whether the evolutio…
Impact of missing information on day-to-day research based on secondary data
Using secondary data has many advantages, but there are also many limitations, including the lack of relevant information. This article draws on a previous study that used secondary data to investigate substance use in young, elite athletes. Three types of missing data appeared: missing data, lack of information about the data collection process, and unavailable data. Other concerns were also highlighted, such as coverage and sampling errors. The…
Profile of Young Victims of Unwanted Sexual Experiences: A Gender Comparison Using a Swiss National Survey
Opinions of Adolescents on Prevention Related to Sexting: A Q-Methodology Study
Treatment and reporting of item-level missing data in social science research
Most quantitative studies in the social sciences suffer from missing data. However, despite the large availability of documents and software to treat such data, it appears that many social scientists do not apply good practices regarding missing data. We analyzed quantitative papers published in 2017 in six top-level social science journals. Item-level missing data was found in at least 69.5% of the papers, but their presence was explicitly repor…
Does the Primary Resource of Sex Education Matter? A Swiss National Study
Sex education (SE) remains a subject of debate, including controversies on resources. The purpose of this paper was to determine the main SE resource during adolescence and its associations with personal characteristics and sexual behaviors of youths. Data were obtained from a self-administrated Swiss national survey on sexuality among young adults (mean age 26.3). Participants (N = 4978) were divided into six groups according to their main SE re…
Development of Somatic Complaints Among Adolescents and Young Adults in Switzerland
In this study we explored the development of somatic complaints among adolescents and young adults aged 16 to 30 years in Switzerland. Using data from the Transitions from Education to Employment (TREE) study, we applied a hidden Markovian model with covariates to cluster trajectories representing the sum of eight somatic complaints. The resulting groups differed mainly in terms of gender, reading literacy, and substance use. The trajectories of …
The Heterogeneity of Disability Trajectories in Later Life: Dynamics of Activities of Daily Living Performance Among Nursing Home Residents
Objective: This study investigated the variability in activities of daily living (ADL) trajectories among 6,155 nursing home residents using unique and rich observational data. Method: The impairment in ADL performance was considered as a dynamic process in a multi-state framework. Using an innovative mixture model, such states were not defined a priori but inferred from the data. Results: The process of change in functional health differed among…
Sexting and the Definition Issue
Disordered Eating: The Young Male Side
Disordered eating (DE) is known to predominate among girls, and historically studies have focused primarily on them. This cross-sectional study aimed to investigate the characteristics of adolescent and young adult males at risk of DE. Participants (N = 2269; 15-24 years) in a study assessing their lifestyle were divided into two groups based on the SCOFF five-question screening tool: a SCOFF[+] group for participants at risk of disordered eating…
Measuring internet use: Comparisons of different assessments and with internet addiction
Background: The measurement of Internet use is an under-documented topic despite the worldwide growth of problematic Internet use and the recent debate in addiction research suggesting that heavy use over time should be suitable for population-based assessment. This study compared different measures of Internet use to identify the most relevant one, and tested whether Internet use was a good proxy of self-reported Internet addiction.Methods: Data…
Test-retest: Agreement or reliability
Test-retest is a concept that is routinely evaluated during the validation phase of many measurement tools. However, this term covers at least two related but very different concepts: reliability and agreement. Reliability is the ability of a measure applied twice upon the same respondents to produce the same ranking on both occasions. Agreement requires the measurement tool to produce twice the same exact values. An analysis of research papers s…
The rise and fall of icons of 'stolen childhood' since the adoption of the UN Convention on the Rights of the Child
In the past two decades, the iconography of victimhood mobilized by child rights advocates has changed significantly. In particular, the child victim of violence has replaced the street child as the dominant icon on the international agenda. Based on data from more than 300 documents produced between 1989 and 2009 and interviews with leading advocates, this article explores the diverging trajectories of iconic child victims. It follows the traces…
Determinants for Bullying Victimization among 11–16-Year-Olds in 15 Low- and Middle-Income Countries: A Multi-Level Study
Bullying is an issue of public health importance among adolescents worldwide. The present study aimed at explaining differences in bullying rates among adolescents in 15 low- and middle-income countries using globally comparable indicators of social and economic well-being. Using data derived from the Global School-based Health Survey, we performed bivariate analyses to examine differences in bullying rates by country and by bullying type. We the…
Measurement Equivalence Across Subnational Groups: An Analysis of the Conception of Nationhood in Switzerland
Because of their higher status, members of national majorities (e.g., linguistic, ethnic, or religious) are likely to develop a stronger sense of ownership of the nation than members of national minorities (Sidanius, Feshbach, Levin, & Pratto, 1997), which is reflected in a stronger attachment to the nation as a whole (e.g., Staerklé, Sidanius, Green, & Molina, 2010). Accordingly, members of national majorities are expected to hold a stricter con…
Associations Between Online Pornography and Sexual Behavior Among Adolescents: Myth or Reality
Who eats healthily? A population-based study among young Swiss residents
Objective To assess whether Swiss residents aged 15–24 years follow current nutritional guidelines and whether differences exist according to gender and weight status. Design Cross-sectional national survey. Setting Switzerland. Subjects The 1786 participants (48·4 % women) were divided into overweight, normal weight and underweight. We used traditional BMI cut-offs for people ≥18 years of age (underweight = BMI 2 , normal weight = BMI ≥ 18·5 kg/…
Markovian models for the developmental study of social behavior
Behavioral development involves changes in the probabilities of both social and nonsocial activities and the sequential pattern of activities over time. A number of methods have been offered for the analysis of these patterns of behavioral sequences. However, there continue to be problematic issues, including the analysis of nonstationary data; accommodation of changes in patterns within an observation period, or over repeated observations or age…
Associations Between Online Pornography and Sexual Behavior Among Adolescents: Myth or Reality
Test-retest: Agreement or reliability
Test-retest is a concept that is routinely evaluated during the validation phase of many measurement tools. However, this term covers at least two related but very different concepts: reliability and agreement. Reliability is the ability of a measure applied twice upon the same respondents to produce the same ranking on both occasions. Agreement requires the measurement tool to produce twice the same exact values. An analysis of research papers s…
The rise and fall of icons of 'stolen childhood' since the adoption of the UN Convention on the Rights of the Child
In the past two decades, the iconography of victimhood mobilized by child rights advocates has changed significantly. In particular, the child victim of violence has replaced the street child as the dominant icon on the international agenda. Based on data from more than 300 documents produced between 1989 and 2009 and interviews with leading advocates, this article explores the diverging trajectories of iconic child victims. It follows the traces…
Measurement Equivalence Across Subnational Groups: An Analysis of the Conception of Nationhood in Switzerland
Because of their higher status, members of national majorities (e.g., linguistic, ethnic, or religious) are likely to develop a stronger sense of ownership of the nation than members of national minorities (Sidanius, Feshbach, Levin, & Pratto, 1997), which is reflected in a stronger attachment to the nation as a whole (e.g., Staerklé, Sidanius, Green, & Molina, 2010). Accordingly, members of national majorities are expected to hold a stricter con…
Treatment and reporting of item-level missing data in social science research
Most quantitative studies in the social sciences suffer from missing data. However, despite the large availability of documents and software to treat such data, it appears that many social scientists do not apply good practices regarding missing data. We analyzed quantitative papers published in 2017 in six top-level social science journals. Item-level missing data was found in at least 69.5% of the papers, but their presence was explicitly repor…
The Heterogeneity of Disability Trajectories in Later Life: Dynamics of Activities of Daily Living Performance Among Nursing Home Residents
Objective: This study investigated the variability in activities of daily living (ADL) trajectories among 6,155 nursing home residents using unique and rich observational data. Method: The impairment in ADL performance was considered as a dynamic process in a multi-state framework. Using an innovative mixture model, such states were not defined a priori but inferred from the data. Results: The process of change in functional health differed among…
Impact of missing information on day-to-day research based on secondary data
Using secondary data has many advantages, but there are also many limitations, including the lack of relevant information. This article draws on a previous study that used secondary data to investigate substance use in young, elite athletes. Three types of missing data appeared: missing data, lack of information about the data collection process, and unavailable data. Other concerns were also highlighted, such as coverage and sampling errors. The…
Does the Primary Resource of Sex Education Matter? A Swiss National Study
Sex education (SE) remains a subject of debate, including controversies on resources. The purpose of this paper was to determine the main SE resource during adolescence and its associations with personal characteristics and sexual behaviors of youths. Data were obtained from a self-administrated Swiss national survey on sexuality among young adults (mean age 26.3). Participants (N = 4978) were divided into six groups according to their main SE re…
Determinants for Bullying Victimization among 11–16-Year-Olds in 15 Low- and Middle-Income Countries: A Multi-Level Study
Bullying is an issue of public health importance among adolescents worldwide. The present study aimed at explaining differences in bullying rates among adolescents in 15 low- and middle-income countries using globally comparable indicators of social and economic well-being. Using data derived from the Global School-based Health Survey, we performed bivariate analyses to examine differences in bullying rates by country and by bullying type. We the…
Markovian models for the developmental study of social behavior
Behavioral development involves changes in the probabilities of both social and nonsocial activities and the sequential pattern of activities over time. A number of methods have been offered for the analysis of these patterns of behavioral sequences. However, there continue to be problematic issues, including the analysis of nonstationary data; accommodation of changes in patterns within an observation period, or over repeated observations or age…
Who eats healthily? A population-based study among young Swiss residents
Objective To assess whether Swiss residents aged 15–24 years follow current nutritional guidelines and whether differences exist according to gender and weight status. Design Cross-sectional national survey. Setting Switzerland. Subjects The 1786 participants (48·4 % women) were divided into overweight, normal weight and underweight. We used traditional BMI cut-offs for people ≥18 years of age (underweight = BMI 2 , normal weight = BMI ≥ 18·5 kg/…
Associations Between Online Pornography and Sexual Behavior Among Adolescents: Myth or Reality
Measurement Equivalence Across Subnational Groups: An Analysis of the Conception of Nationhood in Switzerland
Because of their higher status, members of national majorities (e.g., linguistic, ethnic, or religious) are likely to develop a stronger sense of ownership of the nation than members of national minorities (Sidanius, Feshbach, Levin, & Pratto, 1997), which is reflected in a stronger attachment to the nation as a whole (e.g., Staerklé, Sidanius, Green, & Molina, 2010). Accordingly, members of national majorities are expected to hold a stricter con…
Determinants for Bullying Victimization among 11–16-Year-Olds in 15 Low- and Middle-Income Countries: A Multi-Level Study
Bullying is an issue of public health importance among adolescents worldwide. The present study aimed at explaining differences in bullying rates among adolescents in 15 low- and middle-income countries using globally comparable indicators of social and economic well-being. Using data derived from the Global School-based Health Survey, we performed bivariate analyses to examine differences in bullying rates by country and by bullying type. We the…
The rise and fall of icons of 'stolen childhood' since the adoption of the UN Convention on the Rights of the Child
In the past two decades, the iconography of victimhood mobilized by child rights advocates has changed significantly. In particular, the child victim of violence has replaced the street child as the dominant icon on the international agenda. Based on data from more than 300 documents produced between 1989 and 2009 and interviews with leading advocates, this article explores the diverging trajectories of iconic child victims. It follows the traces…
Measuring internet use: Comparisons of different assessments and with internet addiction
Background: The measurement of Internet use is an under-documented topic despite the worldwide growth of problematic Internet use and the recent debate in addiction research suggesting that heavy use over time should be suitable for population-based assessment. This study compared different measures of Internet use to identify the most relevant one, and tested whether Internet use was a good proxy of self-reported Internet addiction.Methods: Data…
Test-retest: Agreement or reliability
Test-retest is a concept that is routinely evaluated during the validation phase of many measurement tools. However, this term covers at least two related but very different concepts: reliability and agreement. Reliability is the ability of a measure applied twice upon the same respondents to produce the same ranking on both occasions. Agreement requires the measurement tool to produce twice the same exact values. An analysis of research papers s…
Sexting and the Definition Issue
Disordered Eating: The Young Male Side
Disordered eating (DE) is known to predominate among girls, and historically studies have focused primarily on them. This cross-sectional study aimed to investigate the characteristics of adolescent and young adult males at risk of DE. Participants (N = 2269; 15-24 years) in a study assessing their lifestyle were divided into two groups based on the SCOFF five-question screening tool: a SCOFF[+] group for participants at risk of disordered eating…
Development of Somatic Complaints Among Adolescents and Young Adults in Switzerland
In this study we explored the development of somatic complaints among adolescents and young adults aged 16 to 30 years in Switzerland. Using data from the Transitions from Education to Employment (TREE) study, we applied a hidden Markovian model with covariates to cluster trajectories representing the sum of eight somatic complaints. The resulting groups differed mainly in terms of gender, reading literacy, and substance use. The trajectories of …
The Heterogeneity of Disability Trajectories in Later Life: Dynamics of Activities of Daily Living Performance Among Nursing Home Residents
Objective: This study investigated the variability in activities of daily living (ADL) trajectories among 6,155 nursing home residents using unique and rich observational data. Method: The impairment in ADL performance was considered as a dynamic process in a multi-state framework. Using an innovative mixture model, such states were not defined a priori but inferred from the data. Results: The process of change in functional health differed among…
Treatment and reporting of item-level missing data in social science research
Most quantitative studies in the social sciences suffer from missing data. However, despite the large availability of documents and software to treat such data, it appears that many social scientists do not apply good practices regarding missing data. We analyzed quantitative papers published in 2017 in six top-level social science journals. Item-level missing data was found in at least 69.5% of the papers, but their presence was explicitly repor…
Does the Primary Resource of Sex Education Matter? A Swiss National Study
Sex education (SE) remains a subject of debate, including controversies on resources. The purpose of this paper was to determine the main SE resource during adolescence and its associations with personal characteristics and sexual behaviors of youths. Data were obtained from a self-administrated Swiss national survey on sexuality among young adults (mean age 26.3). Participants (N = 4978) were divided into six groups according to their main SE re…
Profile of Young Victims of Unwanted Sexual Experiences: A Gender Comparison Using a Swiss National Survey
Opinions of Adolescents on Prevention Related to Sexting: A Q-Methodology Study
Sending One's Own Intimate Image: Sexting Among Middle‐School Teens
BACKGROUND: There is a gap in the literature regarding data on sexting among youth under the age of 16 whereas the problems related to this practice could affect them more because of their ongoing development. This study aims to determine the prevalence rate and characteristics of sending one's own sexually related image among middle-school teens. METHODS: Data were obtained from a web-based in-school survey conducted between October 2019 and Feb…
Relationship between the Covid-19 Pandemic and the Well-Being of Adolescents and Their Parents in Switzerland
This study is based on two waves of data collected by the Swiss Household panel, the first one in 2019, before the beginning of the COVID-19 pandemic, and the second one in May-June 2020, just after the end of the partial lockdown that was decided by the Swiss government. We considered "couples" of adolescents (age 14-24, mean = 18.82, 51.96% female) and their parents living together ( n = 431). Our main goal was to determine whether the evolutio…
Impact of missing information on day-to-day research based on secondary data
Using secondary data has many advantages, but there are also many limitations, including the lack of relevant information. This article draws on a previous study that used secondary data to investigate substance use in young, elite athletes. Three types of missing data appeared: missing data, lack of information about the data collection process, and unavailable data. Other concerns were also highlighted, such as coverage and sampling errors. The…
Quality principles of retrospective data collected through a life history calendar
To assert the quality of retrospective data, most studies using tools such as life history calendars rely on comparisons with external sources. Our research aimed to integrate quality principles into a life history calendar and test their capacity to evaluate the data quality. The purpose was to avoid reliance on external data sources because of their possible unavailability. The first quality principle was the relationship between the dating acc…
Age of tobacco, nicotine and cannabis use initiation in Switzerland: A sequence analysis among adolescents and young adults
Cigarettes remain the first product to be used, but the younger the respondents, the earlier they start using e-cigarettes, and very close to cigarettes. Regarding current consumption patterns, e-cigarettes are becoming increasingly prominent
Comparison of imputation methods for univariate categorical longitudinal data
The life course paradigm emphasizes the need to study not only the situation at a given point in time, but also its evolution over the life course in the medium and long term. These trajectories are often represented by categorical data. This article aims to provide a comprehensive review of the multiple imputation methods proposed so far in the context of univariate categorical data and to assess their practical relevance through a simulation st…
Psychology (18 works) · Medicine (11 works) · Demography (9 works) · Mathematics (9 works) · Sociology (9 works) · Computer Science (8 works) · Developmental psychology (7 works) · Statistics (7 works) · Demography (6 works) · Environmental health (6 works)