Lydia Gisle - Academia.edu (original) (raw)
Papers by Lydia Gisle
Contains the booklets of HIS/HES Database physical activity questions. (PDF 1889Â kb)
Additional file 1: Supplementary 1. Overview of the creation of the indicators based on the quest... more Additional file 1: Supplementary 1. Overview of the creation of the indicators based on the questions and answer categories in the third COVID-19 health survey.
PloS one, 2018
Before organizing mixed-mode data collection for the self-administered questionnaire of the Belgi... more Before organizing mixed-mode data collection for the self-administered questionnaire of the Belgian Health Interview Survey, measurement effects between the paper-and-pencil and the web-based questionnaire were evaluated. A two-period cross-over study was organized with a sample of 149 employees of two Belgian research institutes (age range 22-62 years, 72% female). Measurement agreement was assessed for a diverse range of health indicators related to general health, mental and psychosocial health, health behaviors and prevention with kappa coefficients and intraclass correlation (ICC). The quality of the data collected by both modes was evaluated by quantifying the missing, 'don't know' and inconsistent values and data entry mistakes. Good to very good agreement was found for all categorical indicators with kappa coefficients superior to 0.60, except for two mental and psychosocial health indicators namely the presence of a sleeping disorder and of a depressive disorder...
International journal of public health, Jan 3, 2017
Substitution of non-participating households is used in the Belgian Health Interview Survey (BHIS... more Substitution of non-participating households is used in the Belgian Health Interview Survey (BHIS) as a method to obtain the predefined net sample size. Yet, possible effects of applying substitution on response rates and health estimates remain uncertain. In this article, the process of substitution with its impact on response rates and health estimates is assessed. The response rates (RR)-both at household and individual level-according to the sampling criteria were calculated for each stage of the substitution process, together with the individual accrual rate (AR). Unweighted and weighted health estimates were calculated before and after applying substitution. Of the 10,468 members of 4878 initial households, 5904 members (RRind: 56.4%) of 2707 households (RRhh: 55.5%) participated. For the three successive (matched) substitutes, the RR dropped to 45%. The composition of the net sample resembles the one of the initial samples. Applying substitution did not produce any important ...
Http Dx Doi Org 10 1080 09658210042000120, Sep 22, 2010
Flashbulb memories are vivid and long-lasting memories for the reception context of an important ... more Flashbulb memories are vivid and long-lasting memories for the reception context of an important public event (Brown & Kulik, 1977). They are assumed to be triggered by emotional factors (i.e., intensity of emotional feeling, appraisal of the original event) and by social factors (i.e., social sharing of the news, following media debate about the event). The present study investigated the memory for the death of the former President of France F. Mitterrand in two social groups, i.e., French and Belgian people. This study tests whether the flashbulb memory attributes, the memory for the original event, and the impact of the emotional and social determinants of flashbulb memory differed across groups. The results indicated that the flashbulb memory for Mitterrand's death is affected by group provenance, as French people showed higher levels of recall for the flashbulb memory attributes and their determinants than Belgian people. Time impaired recollections in both groups, so that flashbulb memories appear prone to decay and share the same destiny as ordinary memories. The theoretical construct of concern--as the most basic antecedent of emotional experiences and its related appraisal (Frijda, 1994)--is discussed in order to explain the differences in memory of the two social groups.
Pharmacoepidemiology and Drug Safety, 2009
In the majority of studies on determinants of use of anxiolytics and antidepressants a substantia... more In the majority of studies on determinants of use of anxiolytics and antidepressants a substantially higher consumption is observed among women than among men. We investigated gender differences in the association between the use of anxiolytics and antidepressants and mental health and explored if there are indications of gender differences in inappropriate use of these medicines. Data were from the 2004 Belgian Health Interview Survey, a nationally representative sample of the Belgian population. The analysis was restricted to the population of 15 years and older (n = 11,220). The probability of use of anxiolytics and antidepressants was assessed through logistic regression models by gender and through models including the interaction between gender and mental health. The association between the use of antidepressants and mental health did not vary substantially between men and women. Among men the use of anxiolytics showed a strong association with sleeping problems, but not with depressive disorders. Among women the use of anxiolytics was significantly associated with the three mental health conditions that were investigated: depressive disorder, anxiety, and sleeping problems. The link between mental health and use of anxiolytics differs by gender. Some indications exist for gender differences in inappropriate use of anxiolytics, whereas this does not hold true for the use of antidepressants. Further efforts are needed to increase the awareness of prescribers, policy makers, and the general public on the appropriate use of anxiolytics, especially among women and in the older population.
Sozial- und Pr�ventivmedizin/Social and Preventive Medicine, 2004
Most Health Interview Surveys (HIS) include questions that gather information on health problems ... more Most Health Interview Surveys (HIS) include questions that gather information on health problems of the respondents. Often these are closed ended questions (e.g., respondents are asked if they suffer from a specific disease). Yet, in quite some surveys respondents are also asked in an open ended question to indicate the health problem that they are suffering from, or for which they have contacted a health professional. In order to analyse this information, the answers need to be classified. Often this is done with “ad hoc” classifications or with the International Statistical Classification of Diseases and Related Health Problems (ICD), now available in its 10th edition: ICD-10 (WHO 1992). Apart form the ICD there are a number of other classifications that are used in medicine and public health (Lagasse et al. 2001), one of which is the International Classification of Primary Care (ICPC). The ICPC was developed in primary care and has received increasing recognition during the past few years. It was first published by WONCA (World Organisation of Family Doctors) in 1987 (Lamberts & Wood 1987). The main purpose was to fit better the frequency distributions of family/general practice. The new classification departed from the traditional ICD chapter format where the axes of the several chapters vary, from body systems to aetiology and to others. This mixture of axes creates confusion, since diagnostic entities can with equal logic be classified in more than one chapter, for example influenza in either the infections chapter or the respiratory chapter, or both. Instead of conforming to this format, the ICPC chapters are based on body systems, following the principle that localization has precedence over aetiology. The components that are part of each chapter permit considerable specificity for all elements of a medical encounter, yet their symmetrical structure and frequently uniform numbering across all chapters facilitate usage even in manual recording systems (WONCA International Classification Committee 1998). The ICPC is based on a simple bi-axial structure: 17 chapters based on body systems on one axis, each with a letter code, and seven identical components with rubrics bearing a twodigit numeric code as the second axis (see Fig. 1). Since its first publication in 1987 the ICPC has been used extensively as an epidemiological tool for the description of family/general practice in countries all over the world 1. A second edition of the ICPC has been prepared for two main reasons: to relate it to the 10th edition of the ICD, ICD-10, published by WHO in 1992, and to add inclusion criteria and cross-referencing (lists of synonyms, similar conditions which should be coded elsewhere and alternatives if the particular patient’s condition does not meet the inclusion criteria) for many of the rubrics (WONCA International Classification Committee 1998; Jamoulle et al. 2000). The complete ICPC-2 classification in its electronic form can be downloaded from the internet (http://www.ulb.ac.be/esp/ wicc/ceo.html). The use of the ICPC-2 classification in national/local coding systems is subject to a copyright by the WICC (WONCA International Classification Committee). Although the ICPC is primarily aimed for use in general practice it has also been used in other settings in various European countries (http://www.ulb.ac.be/esp/wicc/icpc2001.html). The ICPC is very useful for the classification of medical terms in health interview surveys for the following reasons: – ICPC was developed for the primary care setting, making it less technical and more appropriate for classification of lay terms than the ICD, the language of which is essentially medical/diagnostic. – Classification of health problems with the ICPC is straightforward and less confusing than with the ICD. – In the ICPC specific rules are applied for recording reasons for encounters (RFE). – Because of the direct link between the ICPC and the ICD it is always possible to link an ICPC code with a corresponding ICD-code.
The European Journal of Public Health, 2009
Archives of Public Health, 2013
Background: The Belgian Health Interview Survey (BHIS) is organised every 4 to 5 years and collec... more Background: The Belgian Health Interview Survey (BHIS) is organised every 4 to 5 years and collects health information from around 10,000 individuals in a face-to-face setting. This manuscript describes the methodological choices made in the sampling design, the outcomes of the previous surveys in terms of participation rates and achieved targets and the factors to be accounted for in data-analysis. Methods: The BHIS targets all persons residing in Belgium with no restrictions on age or nationality. Trimestral copies of the National Population Registry are used as the sampling frame. To select the respondents, a multistage sampling design is applied involving a geographical stratification, a selection of clusters, a selection of households within each cluster and a selection of respondents within each household. Using matched substitution of non-participating households assures the realisation of the predefined net-sample. Results: For each BHIS the required number of participants is achieved, including the years when an oversampling of provinces and of the elderly occurred. The sampling design guarantees that the survey is implemented in large cities as well as in small municipalities. A growing problem is related to the sampling frame: it is increasingly subject of deterioration, especially in the Brussels-Capital Region. Conclusions: The methodological approach developed for the first BHIS proves to be accurate and was kept nearly unchanged throughout the following surveys. Fieldwork substitution contributes to a considerable extent to the success of the fieldwork but yields in higher percentages of non-participation. The sampling design requires special attention when analysing the data: the unequal selection probability, e.g. due to the non-proportional stratification at the regional level, necessitates the use of weights. The BHIS is progressively embedded in the European Health Survey, a process that doesn't jeopardise the comparability of the Belgian results throughout time.
test±retest study of the memory of French President
BACKGROUND Potential is seen in web data collection for population health surveys due to a combin... more BACKGROUND Potential is seen in web data collection for population health surveys due to a combination of its cost-effectiveness, implementation ease and the increased internet penetration. Nonetheless, web modes may lead to lower and more selective unit response rates than traditional modes and hence may increase bias in the measured indicators. OBJECTIVE This research assesses the unit response and costs of a web versus F2F study. METHODS Alongside the F2F Belgian Health Interview Survey of 2018 (BHIS2018; n gross sample used: 7,698), a web survey (BHISWEB; n gross sample=6,183) is organized. Socio-demographic data on invited individuals is obtained from the national register and census linkages. Unit response rates considering the different sampling probabilities of both surveys are calculated. Logistic regression analyses examine the association between mode system (web vs. F2F) and socio-demographic characteristics on unit non-response. The costs per completed web questionnaire...
International Journal of Psychology, 1992
Contains the booklets of HIS/HES Database physical activity questions. (PDF 1889Â kb)
Additional file 1: Supplementary 1. Overview of the creation of the indicators based on the quest... more Additional file 1: Supplementary 1. Overview of the creation of the indicators based on the questions and answer categories in the third COVID-19 health survey.
PloS one, 2018
Before organizing mixed-mode data collection for the self-administered questionnaire of the Belgi... more Before organizing mixed-mode data collection for the self-administered questionnaire of the Belgian Health Interview Survey, measurement effects between the paper-and-pencil and the web-based questionnaire were evaluated. A two-period cross-over study was organized with a sample of 149 employees of two Belgian research institutes (age range 22-62 years, 72% female). Measurement agreement was assessed for a diverse range of health indicators related to general health, mental and psychosocial health, health behaviors and prevention with kappa coefficients and intraclass correlation (ICC). The quality of the data collected by both modes was evaluated by quantifying the missing, 'don't know' and inconsistent values and data entry mistakes. Good to very good agreement was found for all categorical indicators with kappa coefficients superior to 0.60, except for two mental and psychosocial health indicators namely the presence of a sleeping disorder and of a depressive disorder...
International journal of public health, Jan 3, 2017
Substitution of non-participating households is used in the Belgian Health Interview Survey (BHIS... more Substitution of non-participating households is used in the Belgian Health Interview Survey (BHIS) as a method to obtain the predefined net sample size. Yet, possible effects of applying substitution on response rates and health estimates remain uncertain. In this article, the process of substitution with its impact on response rates and health estimates is assessed. The response rates (RR)-both at household and individual level-according to the sampling criteria were calculated for each stage of the substitution process, together with the individual accrual rate (AR). Unweighted and weighted health estimates were calculated before and after applying substitution. Of the 10,468 members of 4878 initial households, 5904 members (RRind: 56.4%) of 2707 households (RRhh: 55.5%) participated. For the three successive (matched) substitutes, the RR dropped to 45%. The composition of the net sample resembles the one of the initial samples. Applying substitution did not produce any important ...
Http Dx Doi Org 10 1080 09658210042000120, Sep 22, 2010
Flashbulb memories are vivid and long-lasting memories for the reception context of an important ... more Flashbulb memories are vivid and long-lasting memories for the reception context of an important public event (Brown & Kulik, 1977). They are assumed to be triggered by emotional factors (i.e., intensity of emotional feeling, appraisal of the original event) and by social factors (i.e., social sharing of the news, following media debate about the event). The present study investigated the memory for the death of the former President of France F. Mitterrand in two social groups, i.e., French and Belgian people. This study tests whether the flashbulb memory attributes, the memory for the original event, and the impact of the emotional and social determinants of flashbulb memory differed across groups. The results indicated that the flashbulb memory for Mitterrand's death is affected by group provenance, as French people showed higher levels of recall for the flashbulb memory attributes and their determinants than Belgian people. Time impaired recollections in both groups, so that flashbulb memories appear prone to decay and share the same destiny as ordinary memories. The theoretical construct of concern--as the most basic antecedent of emotional experiences and its related appraisal (Frijda, 1994)--is discussed in order to explain the differences in memory of the two social groups.
Pharmacoepidemiology and Drug Safety, 2009
In the majority of studies on determinants of use of anxiolytics and antidepressants a substantia... more In the majority of studies on determinants of use of anxiolytics and antidepressants a substantially higher consumption is observed among women than among men. We investigated gender differences in the association between the use of anxiolytics and antidepressants and mental health and explored if there are indications of gender differences in inappropriate use of these medicines. Data were from the 2004 Belgian Health Interview Survey, a nationally representative sample of the Belgian population. The analysis was restricted to the population of 15 years and older (n = 11,220). The probability of use of anxiolytics and antidepressants was assessed through logistic regression models by gender and through models including the interaction between gender and mental health. The association between the use of antidepressants and mental health did not vary substantially between men and women. Among men the use of anxiolytics showed a strong association with sleeping problems, but not with depressive disorders. Among women the use of anxiolytics was significantly associated with the three mental health conditions that were investigated: depressive disorder, anxiety, and sleeping problems. The link between mental health and use of anxiolytics differs by gender. Some indications exist for gender differences in inappropriate use of anxiolytics, whereas this does not hold true for the use of antidepressants. Further efforts are needed to increase the awareness of prescribers, policy makers, and the general public on the appropriate use of anxiolytics, especially among women and in the older population.
Sozial- und Pr�ventivmedizin/Social and Preventive Medicine, 2004
Most Health Interview Surveys (HIS) include questions that gather information on health problems ... more Most Health Interview Surveys (HIS) include questions that gather information on health problems of the respondents. Often these are closed ended questions (e.g., respondents are asked if they suffer from a specific disease). Yet, in quite some surveys respondents are also asked in an open ended question to indicate the health problem that they are suffering from, or for which they have contacted a health professional. In order to analyse this information, the answers need to be classified. Often this is done with “ad hoc” classifications or with the International Statistical Classification of Diseases and Related Health Problems (ICD), now available in its 10th edition: ICD-10 (WHO 1992). Apart form the ICD there are a number of other classifications that are used in medicine and public health (Lagasse et al. 2001), one of which is the International Classification of Primary Care (ICPC). The ICPC was developed in primary care and has received increasing recognition during the past few years. It was first published by WONCA (World Organisation of Family Doctors) in 1987 (Lamberts & Wood 1987). The main purpose was to fit better the frequency distributions of family/general practice. The new classification departed from the traditional ICD chapter format where the axes of the several chapters vary, from body systems to aetiology and to others. This mixture of axes creates confusion, since diagnostic entities can with equal logic be classified in more than one chapter, for example influenza in either the infections chapter or the respiratory chapter, or both. Instead of conforming to this format, the ICPC chapters are based on body systems, following the principle that localization has precedence over aetiology. The components that are part of each chapter permit considerable specificity for all elements of a medical encounter, yet their symmetrical structure and frequently uniform numbering across all chapters facilitate usage even in manual recording systems (WONCA International Classification Committee 1998). The ICPC is based on a simple bi-axial structure: 17 chapters based on body systems on one axis, each with a letter code, and seven identical components with rubrics bearing a twodigit numeric code as the second axis (see Fig. 1). Since its first publication in 1987 the ICPC has been used extensively as an epidemiological tool for the description of family/general practice in countries all over the world 1. A second edition of the ICPC has been prepared for two main reasons: to relate it to the 10th edition of the ICD, ICD-10, published by WHO in 1992, and to add inclusion criteria and cross-referencing (lists of synonyms, similar conditions which should be coded elsewhere and alternatives if the particular patient’s condition does not meet the inclusion criteria) for many of the rubrics (WONCA International Classification Committee 1998; Jamoulle et al. 2000). The complete ICPC-2 classification in its electronic form can be downloaded from the internet (http://www.ulb.ac.be/esp/ wicc/ceo.html). The use of the ICPC-2 classification in national/local coding systems is subject to a copyright by the WICC (WONCA International Classification Committee). Although the ICPC is primarily aimed for use in general practice it has also been used in other settings in various European countries (http://www.ulb.ac.be/esp/wicc/icpc2001.html). The ICPC is very useful for the classification of medical terms in health interview surveys for the following reasons: – ICPC was developed for the primary care setting, making it less technical and more appropriate for classification of lay terms than the ICD, the language of which is essentially medical/diagnostic. – Classification of health problems with the ICPC is straightforward and less confusing than with the ICD. – In the ICPC specific rules are applied for recording reasons for encounters (RFE). – Because of the direct link between the ICPC and the ICD it is always possible to link an ICPC code with a corresponding ICD-code.
The European Journal of Public Health, 2009
Archives of Public Health, 2013
Background: The Belgian Health Interview Survey (BHIS) is organised every 4 to 5 years and collec... more Background: The Belgian Health Interview Survey (BHIS) is organised every 4 to 5 years and collects health information from around 10,000 individuals in a face-to-face setting. This manuscript describes the methodological choices made in the sampling design, the outcomes of the previous surveys in terms of participation rates and achieved targets and the factors to be accounted for in data-analysis. Methods: The BHIS targets all persons residing in Belgium with no restrictions on age or nationality. Trimestral copies of the National Population Registry are used as the sampling frame. To select the respondents, a multistage sampling design is applied involving a geographical stratification, a selection of clusters, a selection of households within each cluster and a selection of respondents within each household. Using matched substitution of non-participating households assures the realisation of the predefined net-sample. Results: For each BHIS the required number of participants is achieved, including the years when an oversampling of provinces and of the elderly occurred. The sampling design guarantees that the survey is implemented in large cities as well as in small municipalities. A growing problem is related to the sampling frame: it is increasingly subject of deterioration, especially in the Brussels-Capital Region. Conclusions: The methodological approach developed for the first BHIS proves to be accurate and was kept nearly unchanged throughout the following surveys. Fieldwork substitution contributes to a considerable extent to the success of the fieldwork but yields in higher percentages of non-participation. The sampling design requires special attention when analysing the data: the unequal selection probability, e.g. due to the non-proportional stratification at the regional level, necessitates the use of weights. The BHIS is progressively embedded in the European Health Survey, a process that doesn't jeopardise the comparability of the Belgian results throughout time.
test±retest study of the memory of French President
BACKGROUND Potential is seen in web data collection for population health surveys due to a combin... more BACKGROUND Potential is seen in web data collection for population health surveys due to a combination of its cost-effectiveness, implementation ease and the increased internet penetration. Nonetheless, web modes may lead to lower and more selective unit response rates than traditional modes and hence may increase bias in the measured indicators. OBJECTIVE This research assesses the unit response and costs of a web versus F2F study. METHODS Alongside the F2F Belgian Health Interview Survey of 2018 (BHIS2018; n gross sample used: 7,698), a web survey (BHISWEB; n gross sample=6,183) is organized. Socio-demographic data on invited individuals is obtained from the national register and census linkages. Unit response rates considering the different sampling probabilities of both surveys are calculated. Logistic regression analyses examine the association between mode system (web vs. F2F) and socio-demographic characteristics on unit non-response. The costs per completed web questionnaire...
International Journal of Psychology, 1992