Biomedical subjects

G H Verrips

Publications and source records attributed to G H Verrips.

At least 19 recordsLinked to original sources

PubMed2002

[Dental care for young people insured by health insurance fund 1. Prevalence and treatment of dental caries between 1987 and 1999].

In 1987, 1993 and 1999 an epidemiological study was performed on oral health in youngsters, aged 5, 11, 17 or 23 years, in whom oral health care was covered by a health insurance fund. The prevalence of caries in the deciduous teeth of the 5-year-olds (examined without radiographs) did not change significantly between 1987 and 1999. Only a small proportion of dmfs was filled. Caries prevalence in permanent teeth of the 11-, 17- and 23-year olds decreased significantly. The number of filled surfaces decreased also. Between 1993 and 1999 the number of clinically found DS increased. However, this rise in dentinal caries lesions was not confirmed by similar findings in a simultaneous performed study with bitewing radiographs.

Adolescent↗

PubMed2002

[Oral health care in young people insured by a health insurance fund. 2. Prevalence and treatment of malocclusions in the Netherlands between 1987-1999].

In this paper data are presented about malposition of teeth in 5-, 11-, 17- and 23-year-olds in the time period between 1987-1999. Furthermore, results are shown of a longitudinal study in youngsters 11-17-years of age of whom some were and others were not treated orthodontically. Between 1987 and 1999, the percentage of youngsters who received orthodontic treatment increased from 23% to 40%. In the same time period the percentage of youngsters 17- and 23-year-olds with a malposition of teeth decreased. In youngsters involved in the longitudinal study and treated orthodontically, a strong improvement of the tooth position was found between the age of 11 and 17. Such an improvement did not appear in the non-treated group. The outcomes are considered as an indication that orthodontic treatments have positive effects on individual and on population level.

Adolescent↗

PubMed2002

[Oral health care in young people insured by a health insurance fund 3. Dental attendance and oral hygiene habits in the Netherlands between 1987 and 1999].

In 1987, 1993 and 1999 an epidemiological study on oral health was performed in youngsters aged 5, 11, 17 or 23 years, in whom oral health care was covered by a health insurance fund. To obtain data on dental attendance, oral hygiene habits and the use of fluoride tablets questionnaires were used; data on the prevalence of dental plaque and calculus was obtained by clinical observations. The percentage of 5-year-olds attending a dentist at least once a year decreased between 1987 and 1999. In 23-year-olds a shift was observed from an attending frequency of twice to once a year, probably as a result of a change of the regulations of the Health Insurance Funds in 1995. The questionnaire data show that frequency of tooth brushing of 5- and 11-year-old children increased between 1987 and 1999. However, this change did not result in a lower prevalence of dental plaque. In the 17- and 23-year-olds a significant decrease of the prevalence of calculus was found. The use of fluoride tablets by children 5 year of age declined between 1987 and 1999. As the Dutch Society for Oral Health Education, Ivoren Kruis (Ivory Cross), altered the recommendations on the use of these tablets, this change could be expected.

Adolescent↗

PubMed2001

Measuring health status using the Health Utilities Index: agreement between raters and between modalities of administration.

The aim of this study was to evaluate interrater and intermodality agreement in assessing health status using the Health Utilities Index. A random sample from a Dutch cohort of 14-year-old Very Low Birth Weight children and their parents were invited to participate in a face-to-face (n = 150) or telephone (n = 150) interview. All 300 participants were also sent a questionnaire by mail. Response rate was 68%. Interrater and intermodality agreement were high for the physical HUI3 attributes and poor for the psychological attributes. Children and parents reported more dysfunction in the psychological attributes when interviewed than when completing the mailed questionnaire. High agreement on the physical attributes may have resulted from the fact that hardly any dysfunction was reported in these attributes, and poor agreement in the psychological attributes may have been a result of the fact that in these attributes much more dysfunction was reported. In measuring children's health status using the HUI3, the results and their interpretation vary with the source of information and the modality of administration. For maximum comparability between studies, written self-report questionnaires seem the preferred option.

Adolescent↗

PubMed2000

Trends in periodontal status and oral hygiene habits in Dutch adults between 1983 and 1995.

UNLABELLED: In 1995, a dental survey, similar to one carried out in 1983, was performed among persons aged 25-54 in the city of 's-Hertogenbosch, the Netherlands. OBJECTIVE: To describe trends in adults periodontal health between 1983 and 1995. METHODS: The participants were interviewed at home and clinically examined in a dental van. RESULTS: Average scores for plaque, calculus, bleeding after probing and number of buccal root surfaces exposed to the oral cavity were lower in 1995 than in 1983. There was no significant change in the percentage of teeth with pocket depth of 3.5 mm or more between 1983 and 1995. No difference was found between frequency of toothbrushing in 1983 and 1995. CONCLUSION: The results suggest that the periodontal health of Dutch adults aged 25-54 years has improved since 1983.

Adult↗

PubMed2000

Measuring health-related quality of life in adolescents: agreement between raters and between methods of administration.

The aim of this study was to evaluate the agreement between children and proxies as well as the agreement between methods of administration in assessing Health-Related Quality of Life (HRQoL) using the TNO AZL Children's Quality Of Life (TACQOL) questionnaire. A random sample from a Dutch cohort of 14-year-old very low birth weight children and their parents were invited to participate in a face-to-face (n = 150) or telephone interview (n = 150). Participants were also sent a questionnaire by mail. The response rate was 83%. Inter-rater and intermethod agreement were generally good in observable HRQoL domains, and moderate in less readily observable, and possibly less stable, domains such as moods, pain and physical symptoms, and social functioning. In measuring children's HRQoL using the TACQOL, the results and their interpretation are dependent on the source of information and the method of administration.

Adolescent↗

PubMed1998

The proxy problem: child report versus parent report in health-related quality of life research.

This study evaluates the agreement between child and parent reports on children's health-related quality of life (HRQoL) in a representative sample of 1,105 Dutch children (age 8-11 years old). Both children and their parents completed a 56 item questionnaire (TACQOL). The questionnaire contains seven eight-item scales: physical complaints, motor functioning, autonomy, cognitive functioning, social functioning, positive emotions and negative emotions. The Pearson correlations between the child and parent reports were between 0.44 and 0.61 (p < 0.001). The intraclass correlations were between 0.39 and 0.62. On average, the children reported a significantly lower HRQoL than their parents on the physical complaints, motor functioning, autonomy, cognitive functioning and positive emotions scales (paired t-test: p < 0.05). Agreement on all of the scales was related to the magnitude of the HRQoL scores and to some background variables (gender, age, temporary illness and visiting a physician). According to multitrait-multimethod analyses, both the child and parent reports proved to be valid.

Adult↗

PubMed1998

Measuring health-related quality of life in children: the development of the TACQOL parent form.

Health-related quality of life (HRQoL), conceptualized as patients' own evaluations of their health status, is an important criterion in evaluation health and health care and in the treatment of individual patients. Until now, few systematic attempts have been made to develop instruments to assess the HRQoL of children using such a conceptualization. This article describes the conceptualization and results of a study aiming to develop such an instrument for children aged 6-15 years using their parents as a proxy. The feasibility and psychometric performance of the instrument were evaluated in a study of 77 patients of the paediatric out-patient clinic of Leiden University Hospital. For each of the a priori-defined domains, a parent form scale could be constructed with satisfactory reliability and moderate correlations with the other scales. Only some of the parents indicating health status problems also signalled negative reactions to these problems. This is, in our view, a strong argument for the distinction between health status and quality of life (QoL). The correlation coefficients between the parent form and a children's questionnaire were low. Overall, the psychometric performance of the TACQOL parent form looks promising, which suggests that this instrument--with some modifications--can indeed be used to assess group differences in HRQoL in children. The results, however, should be replicated in larger samples, currently under study. The relation between parents' proxy reports on the HRQoL of their children and children's self-reports needs further investigation.

Adolescent↗

PubMed1998

Psychological responses to the needle-free Medi-Jector or the multidose Disetronic injection pen in human growth hormone therapy.

The aim of the study was to test the hypothesis that daily administration of growth hormone using the Medi-Jector results in fewer adverse psychological responses than needle injection with a multidose injection pen. The Medi-Jector is a needle-free injection device that can deliver growth hormone subcutaneously through jet injection. The group studied consisted of 18 children aged 10 y or over who were participating in a study of the bioequivalence and bioequipotence of the administration of growth hormone through jet injection or needle injection. Previously, all subjects had received growth hormone therapy with commercially available multidose injection pens. The study was designed as a prospective, randomized, two-period cross-over trial. A questionnaire was used to assess psychological responses such as non-compliance, opinion on ease of preparation, affective responses to administration and local side-effects, as well as overall preference. In addition, the subjects kept a diary during the study. The subjects found the Medi-Jector less offputting (p < 0.01), less painful with respect to both frequency (p < 0.04) and intensity (p < 0.01) and less unpleasant (p < 0.05) than a multidose injection pen with a 28G needle (p < 0.01). No difference in compliance was detected. Most subjects preferred the Medi-Jector for future use (p < 0.05). The mean score on a 1-10 point scale (10 is excellent) was 7.9 (SD 1.4) for the Medi-Jector and 6.8 (SD 2.3) for the multidose injection pen (p < 0.08). The prevalence of visible bruises each day was higher (p < 0.01) with the Medi-Jector (2.5, SD 2.1) than with the multidose injection pen (0.7, SD 1.1), but children showed indifferent affective responses to bruising. Thirteen out of 18 subjects decided to continue therapy with the Medi-Jector (p < 0.06). It is concluded that use of the Medi-Jector in growth hormone therapy tends to lead to fewer adverse psychological responses than a multidose injection pen with 28G needles.

Adolescent↗

PubMed1998

Trends in caries prevalence in Dutch adults between 1983 and 1995.

In 1995, a dental survey was performed among adults aged 25-54 in the Dutch city of 's-Hertogenbosch. A similar study was performed in the same city in 1983 and the aim of the present study was to describe trends in oral health from 1983 to 1995. National data show that the percentage of edentulous persons aged 30-39 and 40-49 decreased from 11.3 to 3.3 and from 28.5 to 13.8, respectively, between 1984 and 1993/94. The same trend was found in 's-Hertogenbosch. In persons with natural dentition under the age of 35 the mean number of DMFT decreased significantly between 1983 and 1995. In 1995 the mean number of FT was higher, and the mean numbers of DT and MT were lower than in 1983 in all age categories. It can be concluded that oral health in Dutch adults, as measured by caries prevalence, treatment level of caries and percentage of edentulous persons, improved significantly between 1983 and 1995.

Adult↗

PubMed1998

Dental prevention among Turkish and Moroccan parents in The Hague.

OBJECTIVE: The aim of this study was to determine the extent to which dental prevention among Turkish parents differs from that among Moroccan parents in one of the large cities in the Netherlands. DESIGN: Turkish and Moroccan mothers with a child of approximately six months old, who visited the well baby clinics in the Schilderswijk area of The Hague, were asked to participate in a dental care project. As part of the initial data collection in this project, 170 Turkish and 153 Moroccan mothers were interviewed at home by a woman who spoke their native languages. The interview contained questions about dental prevention, such as fluoride use, feeding bottle use, visits to the dentist, brushing, information about oral care, and about relevant background characteristics. RESULTS: More Moroccan than Turkish mother reported that they did not use a feeding bottle for the baby, went to the dentist twice a year, brushed their own teeth at least twice a day and started to brush their children's teeth at an early age. The Moroccan mothers were more committed to dental prevention than Turkish mothers, even after correction for background characteristics such as education, language skills and the number of years spent in the Netherlands. CONCLUSIONS: Ethnic groups should not be seen as a single group for dental prevention. It is recommended that Turkish parents in particular be encouraged to go to the dentist twice a year, to start brushing their children's teeth at an early age and to wean their children off use of a feeding bottle in bed.

Adult↗

PubMed1997

[Changes in oral health in adults. Results of studies performed in 1983 and 1995].

In 1995 a dental survey among adults aged 25-54 years was performed in 's-Hertogenbosch (The Netherlands). Aim was to study trends in oral health after 1983, a year in which a similar study was performed in the same city. Caries data were obtained by clinical examination only. The percentage of edentulous persons in the sample decreased with about 50% between 1983 and 1995. In 1995 in all age categories of dentate persons, the mean number of FT was higher, and the mean numbers of DT and MT were lower than in 1983. In persons with a natural dentition under the age of 35 the mean number of DMFT decreased significantly. It was concluded that oral health in adults living in 's-Hertogenbosch, as measured by caries prevalence, treatment level of caries and percentage of edentulous persons, improved significantly between 1983 and 1995. It is supposed that the trends found in 's-Hertogenbosch are indicative of changes in oral health in The Netherlands.

Adult↗

PubMed1996

Changes in caries prevalence in children and young adults of Dutch and Turkish or Moroccan origin in The Netherlands between 1987 and 1993.

In 1987, an epidemiological study was started with the aim to evaluate the development of dental health in young people insured by "Health Insurance Funds'. In The Netherlands, insurance by such funds is compulsory for individuals earning less than some income criterion (in 1995 59,000 Dutch florins) and their families, together approximately 60% of the Dutch population. Dental health care is included in the insurance. Caries data were obtained in subjects aged 5-23 years in 1987, 1990 and 1993. Mean DMFS scores of groups aged 11, 17 or 23 years in 1993 were about 40% lower than in 1987. No significant differences in mean number of dmfs of 5-year-olds in 1987 and 1993 could be observed. A breakdown by country of birth of the mother showed that the difference between indigenous Dutch juveniles and juveniles of Turkish or Moroccan origin depended on year of birth. Caries prevalence of Turkish or Moroccan children born in 1982 or later was higher than that of Dutch children of equal age; no significant difference in DMFS could be demonstrated between ethnic categories in juveniles born in 1976. In cohorts born before 1976, DMFS scores of Turkish/Moroccan juveniles were much lower than those of Dutch juveniles. It is suggested that these opposite trends were caused by the fact that subjects in the youngest cohorts had been born in The Netherlands, while the oldest cohorts spent the first years of their life in those parts of Turkey or Morocco where caries prevalence of children is low. Between 1987 and 1993 caries prevalence in 5-year-old children of Turkish or Moroccan origin decreased significantly.

Adolescent↗

PubMed1995

[Insufficient participation in prevention programs for infants by Turkish, Moroccan, Chinese and Vietnamese parents in large cities].

OBJECTIVE: To establish the participation in a number of effective prevention programmes for infants of Turkish, Maroccan, Chinese and Vietnamese inhabitants of the four major cities in the Netherlands. DESIGN: Enquiry. SETTING: Health centres in Amsterdam, Rotterdam, The Hague and Utrecht. METHOD: Health centre staff members in 1994 asked 194 Turkish and 158 Maroccan parents to participate in the study: the responses were 142 (73%) and 104 (66%), respectively. With the aid of Chinese and Vietnamese female interpreters, 44 parents of Chinese and 75 of Vietnamese infants were persuaded to participate. Previously instructed interviewers presented the parents of all children with a number of structured questions in their own languages regarding use of vitamins (A)D and K and about vaccination against diphtheria, pertussis, tetanus and poliomyelitis (DKTP) and with BCG vaccine. RESULTS: Bottle feeding alone was given to 18% of the Turkish, 43% of the Maroccan, 71% of the Chinese and 51% of the Vietnamese children. 82% Of the children were given vitamin A(D), the Maroccan children the most and the Vietnamese children the least often. Of the breast-fed children, 65% were given vitamin K, the Turkish children the most often. The DKTP vaccination degrees (1st, 2nd and 3rd vaccination) of the Turkish, Vietnamese and Chinese children was in accordance with those of Dutch children, but of the Maroccan children, one in five had not been vaccinated according to the parents. The BCG vaccination degrees were too low among the Turkish (55%) and the Maroccan (42%) children. Of the mothers, 27% reported having been vaccinated against rubella; 2% had vaccination certificates. CONCLUSION: Participation of the four groups of allochtonous children in the effective prevention programmes investigated was insufficient. At contacts of health workers with these groups, participation in prevention programmes should always be established. Support by means of educative material to be developed specifically should be made a subject of research.

Adult↗

PubMed1994

Consumption of sweet snacks and caries experience of primary school children.

With the aim of evaluating the relationship between consumption of sweet snacks (sugars) and caries prevalence, a secondary analysis was performed on data obtained in an epidemiological study of 5-, 8- and 11-year-old children, all participants of Regional Institutions for Youth Dentistry. The children's primary and permanent teeth were examined mainly by visual examination. Parents completed a questionnaire on the child's toothbrushing habits, use of fluoride tablets and fluoride toothpaste, consumption of sweet snacks, level of education of the mother as an indicator of the socio-economic status of the family and country of birth of the mother as an indicator of ethnicity. The various oral hygiene habits were combined into one variable. Firstly the crude relationship between consumption of sweet snacks and caries experience was evaluated, subsequently oral hygiene habits, socio-economic status and ethnicity were taken into account. Mean dmfs scores of 5- and 8-year-old children who consumed sweet snacks between meals more than 5 times a day (according to parents' reports) were significantly higher than mean dmfs scores of children with a lower reported sweet snack consumption. Multivariate analysis confirmed this result. Only 4.2% of the children were in the group with such a high sweet snack consumption. A number of parents probably underestimated the sweet snack consumption of their children. As the validity of the data on sweet snack consumption was questionable, the actual influence of this factor might be larger than the results of this study show.

Child↗

PubMed1994

[Results of youth dentistry. Oral health and oral hygiene habits of children participating in regional institutions].

In order to evaluate the results of Regional Institutions (RI's) for Youth Dentistry, an epidemiological study was performed on caries experience and oral hygiene habits of 5-, 8- and 11-year-olds, getting dental treatment in these institutions. In the big cities participants of the RI's appeared to be mostly from the lower social levels of society and ethnic minority groups. Caries experience and oral hygiene habits of these children were relatively unfavourable. A significant statistical correlation exists between oral hygiene habits and caries experience. Differences between the results of the RI's with respect to the oral health and the oral hygiene habits of the participants can be explained to a large extent by the mentioned social and ethnic differences.

Attitude to Health↗

PubMed1994

[Special dentistry assistance. An evaluation of the revised ruling 1990].

Public Health insurance provision of dental care for patients with a physical, mental, dental or medical handicap has been reorganized in 1990. In order to evaluate this reorganization, general dental practitioners, dentists in hospital clinics or institutions for the handicapped as well as dentists employed as advisors to local health insurance authorities were interviewed. Results show that, until now, the reorganization has not resulted in an increase of seeking dental care by handicapped patients at the general dental practitioner's. The reorganization seems to have taken place in too much haste, thus not leading to the desired provision of dental care for handicapped patients.

Dental Care for Persons with Disabilities↗

PubMed1994

Correlates of toothbrushing in preschool children by their parents in four ethnic groups in The Netherlands.

A previous study among Amsterdam 5-year-old children showed that on average, the older the child at the onset of toothbrushing and the less frequent the toothbrushing, the more life time caries experience it had. The aim of the present study was to assess correlates of these two caries risk factors, in four ethnic groups. A further aim was to evaluate the putative role of correlates as intervening variables between ethnicity and caries risk factors. Questionnaire data were available from the Amsterdam study, in which a stratified sample of 103 Turkish, 258 Moroccan, 59 Dutch and 56 Surinamese parents were interviewed at home in their mother tongue. Results showed 69 per cent of the Turkish, 45 per cent of the Moroccan, 17 per cent of the Dutch and 11 per cent of the Surinamese parents had commenced brushing their child's teeth only after its second birthday or even never at all. Moreover, many parents had not brushed their child's teeth every day. Almost all potential correlates in six domains, namely parental habits, attitudes, evaluative beliefs, behavioural beliefs, perceived role of the child and that of the partner, were found to be related crudely to the risk factors. Large differences in score patterns on the correlates were observed between ethnic groups. Multiple logistic regression analyses showed substantial parts of the differences in risk factor scores between the Turkish group and a combined Dutch and Surinamese reference group could be attributed to the intervening role of the correlates, as could only minor parts of the difference in risk factor scores between the Moroccan group and the reference group.(ABSTRACT TRUNCATED AT 250 WORDS)

Chi-Square Distribution↗