Werner Vach
Biographic Data
| ID | 77035 |
|---|---|
| NAME | Werner Vach |
| GIVEN NAMES | Werner |
| FAMILY NAME | Vach |
| SIGNATURE | VACH W |
| AFFILIATIONS | University of Southern Denmark |
| ORCID | 0000-0003-1865-8399 |
| VERIFIED | Yes |
| TOTAL WORKS | 29 |
| TOTAL CITATIONS | 69 |
| AUTHOR COUNT | 29 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1994 |
| LATEST PUBLICATION YEAR | 2024 |
| H-INDEX | 5 |
Anchor-based minimal important difference values are often sensitive to the distribution of the change score
In future the computation of MID values should be based on construction methods avoiding sensitivity to the distribution of the change score
Do Common Risk Adjustment Methods Do Their Job Well If Center Effects Are Correlated With the Center-Specific Mean Values of Patient Characteristics
BACKGROUND: Direct and indirect standardization are well-established approaches to performing risk adjustment when comparing outcomes between healthcare providers. However, it is an open question whether they work well when there is an association between the center effects and the distributions of the patient characteristics in these centers. OBJECTIVES AND METHODS: We try to shed further light on the impact of such an association. We construct …
Osteological age-at-death estimation in an archaeological sample avoiding age-mimicry
In human osteoarchaeology, individual age-at-death is traditionally assigned by scoring characteristic expressions of specific traits and applying formulas or algorithms. However, it is well known that the resulting age estimates in target samples suffer from bias due to the effect of age-mimicry, both at the individual and at the population level. A general statistical methodology to obtain unbiased estimates of the age-at-death distribution in …
Understanding the Influence of Patient Factors on Accuracy and Decision-Making in a Diagnostic Accuracy Study with Multiple Raters—A Case Study from Dentistry
In diagnostic accuracy studies, the test of interest is typically applied only once in each patient. This paper illustrates some possibilities that arise when diagnoses are carried out by a sufficiently large number of multiple raters. In a dental study, sixty-one examiners were asked to diagnose 49 tooth areas with different grades of tissue loss (minor, moderate, and advanced) to decide whether dentine was exposed (positive status) or not (nega…
Mapping Strontium Isotope Geographical Variability as a Basis for Multi-regional Human Mobility
Archaeological findings from the 8th c. BC settlement at Francavilla Marittima (CS) and its necropolis on the nearby Macchiabate plateau point to multi-regional interactions and the emergence of new identities in connection with the establishment of the Greek colony Sybaris. Strontium isotope analysis (87Sr/86Sr) is an efficient method to reconstruct human mobility and provides new insights into the Iron Age and Archaic period in the Calabria reg…
Comparing a Sensor for Movement Assessment with Traditional Physiotherapeutic Assessment Methods in Patients after Knee Surgery—A Method Comparison and Reproducibility Study
Wearable sensors offer the opportunity for patients to perform a self-assessment of their function with respect to a variety of movement exercises. Corresponding commercial products have the potential to change the communication between patients and physiotherapists during the recovery process. Even if they turn out to be user-friendly, there remains the question to what degree the numerical results are reliable and comparable with those obtained…
Age-at-death estimation in archaeological samples
Age mimicry is a well-known phenomenon in the application of osteological age-estimation methods. Age mimicry refers to the fact that predicting age-at-death from a specific trait (age indicator) based on the relation observed in a specific reference sample implies that age estimates to some degree reflect the age structure of the reference sample. In particular, the estimated population mean in a target population in which an age-estimation meth…
The Effect of a Structured Intervention to Improve Motor Skills in Preschool Children
The preschool age seems to be decisive for the development of motor skills and probably the most promising time-window in relation to improvement of motor skills. This trial investigates the effect of an intensive structured intervention to improve motor skills in 3-6-year-old preschool children. A total of 471 Danish preschool children participated in a cluster randomized controlled trial. The intervention was to enhance motor skills, including …
Best practice for osteological sexing in forensics and bioarchaeology
This paper aims to systematically investigate the value of combining traits from different anatomical regions in osteological sexing by contrasting the utility of single traits and established scores with those of ensembles of traits from single or multiple anatomical regions, allowing metric and morphological traits to be combined. The utility was defined as the fraction of the population for whom we could reach a posterior probability above 95%…
Longitudinal healthcare analytics for disease management
Clinician guidelines recommend health management to tailor the form of care to the expected course of diseases. Hence, in order to decide upon a suitable treatment plan, health professionals benefit from decision support, i.e., predictions about how a disease is to evolve. In clinical practice, such a prediction model requires interpretability. Interpretability, however, is often precluded by complex dynamic models that would be capable of captur…
Do still waters run deep? Formation processes of natural and anthropogenic deposits in the Neolithic wetland site Zug‐Riedmatt (Switzerland)
Micromorphological analysis is used to improve our understanding of wetland site taphonomy and stratigraphy. Twelve profile columns from the Neolithic lakeshore site of Zug‐Riedmatt are macroscopically described here, microscopic analyses are applied to sediment facies, defining 14 sedimentary units (U): The natural basal sediment (U1) is carbonate‐rich, U2 a transition phase to the anthropogenic units U3 to U12. Uppermost are the natural carbona…
Measuring incremental line width and appearance in the tooth cementum of recent and archaeological human teeth to identify irregularities
Self-reported parental vocabulary input frequency for young children
Vocabulary input frequency influences age of acquisition, and is also an essential control for investigating the influence of other factors. We propose a new method of frequency estimation, self-report. 918 Danish-speaking parents of 12–36-month-old children estimated their frequency of use of 725 words. Self-report was substantially correlated with both language sample based frequencies (0.67) and frequencies of a large written corpus of Danish …
Obesity and risk of respiratory tract infections
We confirm the association of obesity with infection burden and present evidence for putative interaction with sports activity and dietary patterns
Contextualising the dead – Combining geoarchaeology and osteo-anthropology in a new multi-focus approach in bone histotaphonomy
Size diversity in Swiss Bronze Age cattle
To date, osteometric data for Swiss Bronze Age cattle, particularly from Alpine sites, are scarce. In the present study, using a large dataset generated by combining preexisting data with recent data obtained from a large Alpine site, cattle size from the Late Neolithic to the Late Bronze Age (LBA) in populations from different sites and regions was evaluated using the logarithmic size index and other statistical analysis. Additionally, the finit…
What is a litre of sediment? Testing volume measurement techniques for wet sediment and their implications in archaeobotanical analyses at the Late Neolithic lake-dwelling site of Parkhaus Opéra (Züri…
Phonology and lexicon in a cross-linguistic perspective
In her interesting article, Stoel-Gammon (this issue) reviews studies concerning the interactions between lexical and phonological development. While the focus of the review is on vocabulary production from children acquiring American English, she also suggests that cross-linguistic research be undertaken to examine how universal and language-specific properties affect the interaction between lexical and phonological acquisition. In this regard, …
The Danish Communicative Developmental Inventories
This paper presents a large-scale cross-sectional study of Danish children's early language acquisition based on the Danish adaptation of the MacArthur-Bates Communicative Development Inventories (CDI). Measures of validity and reliability imply that the Danish adaptation of the American CDI has been adjusted linguistically and culturally in appropriate ways which makes it suitable for tapping into Danish children's language acquisition. The stud…
Early vocabulary development in Danish and other languages
The main objective of this paper is to describe the trajectory of Danish children's early lexical development relative to other languages, by comparing a Danish study based on the Danish adaptation of The MacArthur-Bates Communicative Development Inventories (CDI) to 17 comparable CDI-studies. The second objective is to address the feasibility of cross-linguistic CDI-comparisons. The main finding is that the developmental trend of Danish children…
Girls talk about dolls and boys about cars? Analyses of group and individual variation in Danish children's first words
Based on data from the Danish Longitudinal CDI study on 182 Danish children, we analyse aspects of variation in the children's first 100 words (produced). First, we demonstrate the effect of gender and birth order (number of siblings) on acquisition times of first words by identifying single words which are significantly earlier in the productive repertoire of, for instance, girls versus boys. We also investigate the effect of the same factors on…
Danish children's first words
Using the Danish adaptation of the MacArthur-Bates Communicative Development Inventories (CDI), first language acquisition of 183 Danish children has been studied longitudinally on a monthly basis (8—30 months). Focussing on production, we study early lexical development from the very first word until roughly 100 words are produced, dividing this period into the stages of first-1, -10, -25, -50 and -100 words. We analyse Danish children's first w…
Abstracts of AAPA poster and podium presentations
Climbing into the past—first Himalayan mummies discovered in Nepal
Length of the dental root and the diameter of the tooth neck as odontometric parameters for sex determination
The length of the dental root and the diameter of the tooth neck are odontometric parameters which to date have rarely been used for the differentiation of the sexes. Teeth of 166 individuals from the early medieval burial ground of Eichstetten (south Germany) were available for examination. A correlation analysis was performed to show the possible dimensional interrelation of teeth which, however, applies only to the dental neck parameters. Usin…
Contextualising the dead – Combining geoarchaeology and osteo-anthropology in a new multi-focus approach in bone histotaphonomy
What is a litre of sediment? Testing volume measurement techniques for wet sediment and their implications in archaeobotanical analyses at the Late Neolithic lake-dwelling site of Parkhaus Opéra (Züri…
Climbing into the past—first Himalayan mummies discovered in Nepal
Familienanalyse in kupferzeitlichen Kollektivgräbern aus Umm an‐Nar; Abu Dhabi
Skeletal material from three collective burials from the island of Umm an‐Nar (Arabian peninsula) dating to the 3rd millennium B.C. was submitted to a kinship analysis with the aid of a set of genetically determined odontologic traits. The analysis yielded the following results: a) phenotype and frequency of odontological traits in the skeletal sample suggest a relatively homogeneous population; and b) there are distinct indications for genetical…
Do still waters run deep? Formation processes of natural and anthropogenic deposits in the Neolithic wetland site Zug‐Riedmatt (Switzerland)
Micromorphological analysis is used to improve our understanding of wetland site taphonomy and stratigraphy. Twelve profile columns from the Neolithic lakeshore site of Zug‐Riedmatt are macroscopically described here, microscopic analyses are applied to sediment facies, defining 14 sedimentary units (U): The natural basal sediment (U1) is carbonate‐rich, U2 a transition phase to the anthropogenic units U3 to U12. Uppermost are the natural carbona…
Length of the dental root and the diameter of the tooth neck as odontometric parameters for sex determination
The length of the dental root and the diameter of the tooth neck are odontometric parameters which to date have rarely been used for the differentiation of the sexes. Teeth of 166 individuals from the early medieval burial ground of Eichstetten (south Germany) were available for examination. A correlation analysis was performed to show the possible dimensional interrelation of teeth which, however, applies only to the dental neck parameters. Usin…
Rekonstruktion biologischer und sozialer Strukturen in ur- und frühgeschichtlichen Bevölkerungen – Innovative Ansätze zur Verwandtschaftsanalyse in der Archäologie
Article Rekonstruktion biologischer und sozialer Strukturen in ur- und frühgeschichtlichen Bevölkerungen – Innovative Ansätze zur Verwandtschaftsanalyse in der Archäologie was published on January 1, 1994 in the journal Praehistorische Zeitschrift (volume 69, issue 1)
Age-at-death estimation in archaeological samples
Age mimicry is a well-known phenomenon in the application of osteological age-estimation methods. Age mimicry refers to the fact that predicting age-at-death from a specific trait (age indicator) based on the relation observed in a specific reference sample implies that age estimates to some degree reflect the age structure of the reference sample. In particular, the estimated population mean in a target population in which an age-estimation meth…
Size diversity in Swiss Bronze Age cattle
To date, osteometric data for Swiss Bronze Age cattle, particularly from Alpine sites, are scarce. In the present study, using a large dataset generated by combining preexisting data with recent data obtained from a large Alpine site, cattle size from the Late Neolithic to the Late Bronze Age (LBA) in populations from different sites and regions was evaluated using the logarithmic size index and other statistical analysis. Additionally, the finit…
Osteological age-at-death estimation in an archaeological sample avoiding age-mimicry
In human osteoarchaeology, individual age-at-death is traditionally assigned by scoring characteristic expressions of specific traits and applying formulas or algorithms. However, it is well known that the resulting age estimates in target samples suffer from bias due to the effect of age-mimicry, both at the individual and at the population level. A general statistical methodology to obtain unbiased estimates of the age-at-death distribution in …
Mapping Strontium Isotope Geographical Variability as a Basis for Multi-regional Human Mobility
Archaeological findings from the 8th c. BC settlement at Francavilla Marittima (CS) and its necropolis on the nearby Macchiabate plateau point to multi-regional interactions and the emergence of new identities in connection with the establishment of the Greek colony Sybaris. Strontium isotope analysis (87Sr/86Sr) is an efficient method to reconstruct human mobility and provides new insights into the Iron Age and Archaic period in the Calabria reg…
Best practice for osteological sexing in forensics and bioarchaeology
This paper aims to systematically investigate the value of combining traits from different anatomical regions in osteological sexing by contrasting the utility of single traits and established scores with those of ensembles of traits from single or multiple anatomical regions, allowing metric and morphological traits to be combined. The utility was defined as the fraction of the population for whom we could reach a posterior probability above 95%…
Rekonstruktion biologischer und sozialer Strukturen in ur- und frühgeschichtlichen Bevölkerungen – Innovative Ansätze zur Verwandtschaftsanalyse in der Archäologie
Article Rekonstruktion biologischer und sozialer Strukturen in ur- und frühgeschichtlichen Bevölkerungen – Innovative Ansätze zur Verwandtschaftsanalyse in der Archäologie was published on January 1, 1994 in the journal Praehistorische Zeitschrift (volume 69, issue 1)
Familienanalyse in kupferzeitlichen Kollektivgräbern aus Umm an‐Nar; Abu Dhabi
Skeletal material from three collective burials from the island of Umm an‐Nar (Arabian peninsula) dating to the 3rd millennium B.C. was submitted to a kinship analysis with the aid of a set of genetically determined odontologic traits. The analysis yielded the following results: a) phenotype and frequency of odontological traits in the skeletal sample suggest a relatively homogeneous population; and b) there are distinct indications for genetical…
Detection of Blocks in a Binary Matrix — A Bayesian Approach
Twenty-five thousand-year-old triple burial from Dolní Věstonice
In 1986 a paleolithic triple burial was discovered near Dolní Vĕstonice (Czech Republic). The occurrence of anatomic variants in all three skeletons gave rise to speculations that the buried individuals may have been closely related. To test this hypothesis the skeletons were submitted to a systematic kinship analysis based on odontologic and other non-metric traits. Statistical tests showed that the coincident occurrence of several rare traits i…
Length of the dental root and the diameter of the tooth neck as odontometric parameters for sex determination
The length of the dental root and the diameter of the tooth neck are odontometric parameters which to date have rarely been used for the differentiation of the sexes. Teeth of 166 individuals from the early medieval burial ground of Eichstetten (south Germany) were available for examination. A correlation analysis was performed to show the possible dimensional interrelation of teeth which, however, applies only to the dental neck parameters. Usin…
Climbing into the past—first Himalayan mummies discovered in Nepal
Abstracts of AAPA poster and podium presentations
Danish children's first words
Using the Danish adaptation of the MacArthur-Bates Communicative Development Inventories (CDI), first language acquisition of 183 Danish children has been studied longitudinally on a monthly basis (8—30 months). Focussing on production, we study early lexical development from the very first word until roughly 100 words are produced, dividing this period into the stages of first-1, -10, -25, -50 and -100 words. We analyse Danish children's first w…
The Danish Communicative Developmental Inventories
This paper presents a large-scale cross-sectional study of Danish children's early language acquisition based on the Danish adaptation of the MacArthur-Bates Communicative Development Inventories (CDI). Measures of validity and reliability imply that the Danish adaptation of the American CDI has been adjusted linguistically and culturally in appropriate ways which makes it suitable for tapping into Danish children's language acquisition. The stud…
Early vocabulary development in Danish and other languages
The main objective of this paper is to describe the trajectory of Danish children's early lexical development relative to other languages, by comparing a Danish study based on the Danish adaptation of The MacArthur-Bates Communicative Development Inventories (CDI) to 17 comparable CDI-studies. The second objective is to address the feasibility of cross-linguistic CDI-comparisons. The main finding is that the developmental trend of Danish children…
Girls talk about dolls and boys about cars? Analyses of group and individual variation in Danish children's first words
Based on data from the Danish Longitudinal CDI study on 182 Danish children, we analyse aspects of variation in the children's first 100 words (produced). First, we demonstrate the effect of gender and birth order (number of siblings) on acquisition times of first words by identifying single words which are significantly earlier in the productive repertoire of, for instance, girls versus boys. We also investigate the effect of the same factors on…
Phonology and lexicon in a cross-linguistic perspective
In her interesting article, Stoel-Gammon (this issue) reviews studies concerning the interactions between lexical and phonological development. While the focus of the review is on vocabulary production from children acquiring American English, she also suggests that cross-linguistic research be undertaken to examine how universal and language-specific properties affect the interaction between lexical and phonological acquisition. In this regard, …
What is a litre of sediment? Testing volume measurement techniques for wet sediment and their implications in archaeobotanical analyses at the Late Neolithic lake-dwelling site of Parkhaus Opéra (Züri…
Self-reported parental vocabulary input frequency for young children
Vocabulary input frequency influences age of acquisition, and is also an essential control for investigating the influence of other factors. We propose a new method of frequency estimation, self-report. 918 Danish-speaking parents of 12–36-month-old children estimated their frequency of use of 725 words. Self-report was substantially correlated with both language sample based frequencies (0.67) and frequencies of a large written corpus of Danish …
Obesity and risk of respiratory tract infections
We confirm the association of obesity with infection burden and present evidence for putative interaction with sports activity and dietary patterns
Contextualising the dead – Combining geoarchaeology and osteo-anthropology in a new multi-focus approach in bone histotaphonomy
Size diversity in Swiss Bronze Age cattle
To date, osteometric data for Swiss Bronze Age cattle, particularly from Alpine sites, are scarce. In the present study, using a large dataset generated by combining preexisting data with recent data obtained from a large Alpine site, cattle size from the Late Neolithic to the Late Bronze Age (LBA) in populations from different sites and regions was evaluated using the logarithmic size index and other statistical analysis. Additionally, the finit…
Measuring incremental line width and appearance in the tooth cementum of recent and archaeological human teeth to identify irregularities
Longitudinal healthcare analytics for disease management
Clinician guidelines recommend health management to tailor the form of care to the expected course of diseases. Hence, in order to decide upon a suitable treatment plan, health professionals benefit from decision support, i.e., predictions about how a disease is to evolve. In clinical practice, such a prediction model requires interpretability. Interpretability, however, is often precluded by complex dynamic models that would be capable of captur…
Do still waters run deep? Formation processes of natural and anthropogenic deposits in the Neolithic wetland site Zug‐Riedmatt (Switzerland)
Micromorphological analysis is used to improve our understanding of wetland site taphonomy and stratigraphy. Twelve profile columns from the Neolithic lakeshore site of Zug‐Riedmatt are macroscopically described here, microscopic analyses are applied to sediment facies, defining 14 sedimentary units (U): The natural basal sediment (U1) is carbonate‐rich, U2 a transition phase to the anthropogenic units U3 to U12. Uppermost are the natural carbona…
The Effect of a Structured Intervention to Improve Motor Skills in Preschool Children
The preschool age seems to be decisive for the development of motor skills and probably the most promising time-window in relation to improvement of motor skills. This trial investigates the effect of an intensive structured intervention to improve motor skills in 3-6-year-old preschool children. A total of 471 Danish preschool children participated in a cluster randomized controlled trial. The intervention was to enhance motor skills, including …
Best practice for osteological sexing in forensics and bioarchaeology
This paper aims to systematically investigate the value of combining traits from different anatomical regions in osteological sexing by contrasting the utility of single traits and established scores with those of ensembles of traits from single or multiple anatomical regions, allowing metric and morphological traits to be combined. The utility was defined as the fraction of the population for whom we could reach a posterior probability above 95%…
Comparing a Sensor for Movement Assessment with Traditional Physiotherapeutic Assessment Methods in Patients after Knee Surgery—A Method Comparison and Reproducibility Study
Wearable sensors offer the opportunity for patients to perform a self-assessment of their function with respect to a variety of movement exercises. Corresponding commercial products have the potential to change the communication between patients and physiotherapists during the recovery process. Even if they turn out to be user-friendly, there remains the question to what degree the numerical results are reliable and comparable with those obtained…
Age-at-death estimation in archaeological samples
Age mimicry is a well-known phenomenon in the application of osteological age-estimation methods. Age mimicry refers to the fact that predicting age-at-death from a specific trait (age indicator) based on the relation observed in a specific reference sample implies that age estimates to some degree reflect the age structure of the reference sample. In particular, the estimated population mean in a target population in which an age-estimation meth…
Understanding the Influence of Patient Factors on Accuracy and Decision-Making in a Diagnostic Accuracy Study with Multiple Raters—A Case Study from Dentistry
In diagnostic accuracy studies, the test of interest is typically applied only once in each patient. This paper illustrates some possibilities that arise when diagnoses are carried out by a sufficiently large number of multiple raters. In a dental study, sixty-one examiners were asked to diagnose 49 tooth areas with different grades of tissue loss (minor, moderate, and advanced) to decide whether dentine was exposed (positive status) or not (nega…
Forensic Anthropology and Bioarchaeology Studies (10 works) · Geography (10 works) · Psychology (10 works) · Mathematics (9 works) · Archaeology (8 works) · Medicine (8 works) · Archaeology and ancient environmental studies (7 works) · Developmental psychology (7 works) · Geology (6 works) · Linguistics (6 works)