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Biomedical subjects

B Söderfeldt

Publications and source records attributed to B Söderfeldt.

At least 19 recordsLinked to original sources
PubMed2006

Measuring quality of life of patients with different clinical types of psoriasis using the SF-36.

BACKGROUND: Different specific and generic instruments are used to evaluate quality of life in dermatology, but their interrelationship is not well known. OBJECTIVES: To describe the quality of life in patients with different clinical types of psoriasis using the 36-item short form of the Medical Outcomes Study questionnaire (SF-36), and to study its correlation with dermatology-specific instruments. METHODS: We conducted a cross-sectional study of 380 inpatients with psoriasis. SF-36 mean scores were compared with the norms for medical and psychiatric disorders. Quality of life was also measured by both dermatology-specific (Skindex-29 and Dermatology Life Quality Index, DLQI) and psoriasis-specific instruments (Psoriasis Disability Index, PDI, and the Impact of Psoriasis Questionnaire, IPSO). A specific (Psoriasis Life Stress Inventory, PLSI) and a generic (12-item General Health Questionnaire, GHQ-12) measure of psychological distress was also used. A cluster analysis was performed to study the relationship among the different questionnaires. RESULTS: Our study population showed SF-36 physical health scores similar to minor medical conditions (e.g. physical functioning 79 for psoriasis, 80 for minor medical conditions, and 57 for severe medical conditions), but mental health scores quite similar to psychiatric illnesses (e.g. mental health 57 for psoriasis, 81 for minor medical conditions, 79 for severe medical conditions, and 53 for psychiatric conditions). The SF-36 showed two distinct patterns of impairment of quality of life, with a greater burden of disease for palmoplantar, pustular and arthropathic psoriasis. SF-36 scales tended to form separate clusters from the other dermatology-specific quality of life instruments. CONCLUSIONS: A generic quality of life instrument (e.g. the SF-36) provides information that is complementary to that derived from dermatological questionnaires, and may give further insight in the evaluation of the burden of psoriasis.

Adult↗
PubMed2006

Risk factors associated with symptoms of temporomandibular disorders in a population of 50- and 60-year-old subjects.

The aims of this study were first to investigate, by means of a mail questionnaire, variables from three domains: (i) socio-economic attributes; (ii) general and oral health; and (iii) dental attitudes and behaviours in a large sample of 50- and 60-year-old subjects, and second to compare subjects with or without reported temporomandibular joint (TMJ) pain with respect to these variables. In 2002, a questionnaire was mailed to all 50- and 60-year-old subjects in two Swedish counties, Orebro and Ostergötland (n = 17,138; n50 = 8878; n60 = 8260). Individuals not responding within 2 weeks were given a reminder. If still not answering, a new questionnaire was sent. The final response rate was 72.8% (n = 12,468). The reported responses to questions regarding 'pain in the TMJ region' and 'difficulty to open the mouth wide' were dichotomized into two groups: (i) no temporomandibular disorders (TMD) symptoms; and (ii) some, rather great or severe TMD symptoms. Striking differences in demographic, occupational, general and oral health conditions were found between the groups with and without TMD symptoms. The strongest risk indicator for both pain and dysfunction was reported bruxism. Women, younger subjects (50 years old) and blue-collar workers were significantly more prevalent in the TMD symptom groups. Variables related to impaired general and oral health were more common in the groups with reported TMD problems, whereas satisfaction with received dental care and with teeth was lower. Individuals with reported TMD symptoms differed significantly from those without TMD symptoms in socio-economic attributes, general and oral health symptoms, dental conditions and satisfaction with their teeth.

Age Factors↗
PubMed2006

Factors behind change in knowledge after a mass media campaign targeting periodontitis.

The aim of this study was to investigate changes in knowledge before and after a mass media campaign, in relation to social attributes, care system attributes and oral health aspects. The study was based on a questionnaire in a cohort design, sent out to 900 randomly sampled people aged 50-75 in Sweden. The response rate to the questionnaire before and after the campaign was 70% and 65% respectively. Sixty-four percent answered both questionnaires. Two questions addressed knowledge, while 10 questions aimed to measure social attributes, care system attributes and oral health aspects. Data were analysed for bivariate relations as to change in knowledge and social attributes, care system attributes and oral health aspects. Data were also analysed in multiple regression analysis with knowledge before, knowledge after and knowledge differences as dependent variables. The results showed that there were a number of independent variables with influence on the dependent variables. Of the social attributes, secondary education gave almost 10% (P < 0.001) better knowledge both before and after the campaign. Among care system attributes, high care utilization was related to knowledge both before and after the campaign. The most important factors for knowledge about periodontitis were education, care utilization and perceived importance of oral health. In conclusion, this study demonstrates that mass media might increase knowledge about periodontitis as a health promotion strategy.

Aged↗
PubMed2003

Hypointensity in T2-weighted images of the basal ganglia in solvent-exposed patients with multiple sclerosis: clinical, MRI and CSF characteristics.

Several studies have indicated an association between MS and organic solvent exposure. Our objective was to analyse differences regarding cerebrospinal fluid (CSF) properties, magnetic resonance imaging (MRI) features and cerebral metabolites, measured by proton spectroscopy (1H-MRS), in 20 patients with spontaneous multiple sclerosis (MS) and in 20 patients with MS after solvent exposure; 15 healthy subjects served as controls. CSF examinations were retrospectively reviewed from the medical files. There were no significant differences in the CSF regarding pleocytosis, spinal-serum albumin ratio or mean extended IgG index. However, T2-weighted images of the solvent-exposed MS patients showed more hypointenseareas in the basal ganglia. Hypointensity on T2-weighted images of the basal ganglia in the solvent-exposed MS patients may correspond to neurodegeneration and could be an early event in MS.

Adult↗
PubMed2002

Self-assessments of general and oral health in persons with chronic whiplash-related disorders.

OBJECTIVE: The objectives of the study were 1) to describe general health and daily functioning in a group of subjects with whiplash-associated injuries, 2) to analyse self-assessments of oral disease relative to background factors, 3) to investigate if the Medical Outcomes Study Short Form 36 (SF-36) Health Survey variables were related to the oral disease variables. DESIGN: Questionnaires included the SF-36 Health Survey, and self-assessed oral health with regard to relevant background factors such as gender, age, education and marital status. Logistic regression modelling was performed. PARTICIPANTS: Members of a nationwide Swedish association enlisting persons who have problems concerning a whiplash injury (n = 1,928) were included. A total of 979 persons participated in the study, a response rate of 50.8%. RESULTS: More than twice as many females (n=680) as men (n=296) responded to the questionnaire. A general trend, in comparing SF-36 scores between the present study group and the normative sample, was that persons with whiplash associated disorders scored considerably lower on all scales. Older age and being of female gender, together with poorer physical functioning and poorer general health, were related to poorer oral health status. CONCLUSION: Self-assessed oral health was correlated to impairment in general health, a finding which is in agreement with an integrated holistic understanding of human health and disease. One causative chain for this may be through the stress mechanisms.

Activities of Daily Living↗
PubMed2001

Changes in dental conditions during a decade in a middle-aged and older Swedish population.

A questionnaire measuring dental conditions was sent to 2708 individuals aged 55 79 years in Orebro County, who about 10 years earlier had been randomly selected for a similar study. The response rate was 68% (1848 individuals). Of those, 1665 had participated also in the 1989 study. The objectives were to study changes in dental conditions having occurred during a decade and to evaluate whether impairment in dental conditions among the participants had resulted in prosthodontic treatments. Only small changes in dental conditions were registered among those who participated both in 1989 and in 1999. Loss of a single tooth was the most frequently reported change. Ten per cent fewer reported that they had all teeth remaining in 1999 compared with conditions in 1989. The number of subjects wearing removable dentures increased only slightly. Although the reported changes in dental conditions were small, there had been a need for prosthodontic treatment in many of the subjects. Ten percent of the subjects reported that they had received FPD treatment during the past 10 years. To conclude, the present study showed that only small changes in dental conditions had occurred among the participants during a decade. Nevertheless, a substantial increase in the prevalence of prosthodontic appliances, especially of fixed restorations, was noted.

Aged↗
PubMed2001

Required qualifications in the Swedish Public Dental Health Service as indicators of organizational ideology.

The manifestly required qualifications in job advertisements in the Journal of the Swedish Dental Association were analyzed as indicators of the organizational ideology in the Swedish Public Dental Health Service from the employers' viewpoint. All job advertisements that concerned dentists and managers on different hierarchical levels in general dentistry from January 1990 to December 1998 were included (n = 1152). The number of vacancies was 1856. The textual material was analyzed by content analysis, permitting quantitative descriptions of the text and analysis of the latent characteristics. Words and phrases were classified into categories on different levels of abstraction developed from the theoretical background and the purpose of the study. Altogether 5705 required qualifications were categorized. The inter-coder reliability of the first-level categorization resulted in 81% correspondence of the classification, and lambda = 0.90. Qualifications were more frequently required with higher hierarchical job positions, and personality characteristics were more frequent than technical competence and knowledge. Qualifications interpreted as related to economic goals occurred more frequently than those related to odontological goals. The qualification demands reflected the language of human resource management (HRM), emphasizing the 'soft' people-centered approach and was interpreted as an 'ideal' model of HRM. Dentists were regarded as a profitable organizational asset rather than participants in relations with patients. In conclusion, the results indicate an organizational ideology primarily of economic character.

Administrative Personnel↗
PubMed2001

Recall of an oral health education programme by nursing personnel in special housing facilities for the elderly.

OBJECTIVES: To investigate the recall of oral health knowledge and confidence by nursing personnel in special housing facilities for the elderly, three years after an education programme. DESIGN: A cross sectional design using a questionnaire. SAMPLE: All nursing personnel, a total of 2,901 subjects, in five municipalities in south-western Sweden; of whom 950 had attended the programme. The response rate was 67% (1930 subjects). INTERVENTION: An oral health education programme consisting of four one-hour lessons. RESULTS: The oral health education programme still had an effect on the participants' attitudes towards oral health three years later. When comparing the trained group (OHEP+) which attended the programme with those who did not have training (OHEP-), the perceived ability, opportunity and the knowledge of oral health were significantly better in the former group, p < 0.01 Further, within the OHEP- group who did not attend the programme there was a significant difference in the perceived ability, opportunity and the knowledge of oral health between those with a higher level of health care education, p < 0.01. CONCLUSIONS: The effect of an oral health education programme on the participants' attitudes towards oral health persists at least for three years. The data indicate that trainees with a low level of health care education benefit most.

Attitude of Health Personnel↗
PubMed2001

Influence of dental care systems on dental status. A comparison between two countries with different systems but similar living standards.

OBJECTIVE: To evaluate the influence of two different dental care systems on dental status, taking into account relevant socio-economic factors. BASIC RESEARCH DESIGN: Questionnaire studies on randomly sampled subjects in Denmark and Sweden using questionnaire forms as identical as possible with regard to the different languages. SETTING: The studies were performed late in 1998 in both countries. PARTICIPANTS: Questionnaires were sent to 1,175 subjects aged 45-69 years in Denmark (response rate 73%) and to 1,001 subjects aged 55-79 years in Sweden (response rate 67%). MAIN OUTCOME MEASURES: Questions about dental status and about socioeconomic factors and attitudes toward dental care were included. In logistic regression models, various dichotomies of dental conditions were used as dependent variables. State (Denmark vs. Sweden) was used as an independent variable together with socioeconomic factors and attitudes. RESULTS: There were great differences between the countries in dental status. In the regression model with 'wearing removable denture(s)' as the dependent variable, state was the strongest predictor with an OR of above 4.1 for Denmark compared to Sweden. much stronger than variables such as age, income, education and residence. CONCLUSION: The results indicate that the Swedish dental care system has been superior to the Danish one regarding dental status in middle aged and older populations in these two countries.

Age Factors↗
PubMed2000

The cognitive neuroscience of signed language.

The present article is an assessment of the current state of knowledge in the field of cognitive neuroscience of signed language. Reviewed lesion data show that the left hemisphere is dominant for perception and production of signed language in aphasics, in a fashion similar to spoken language aphasia. Several neuropsychological dissociations support this claim: Non-linguistic visuospatial functions can be dissociated from spatial functions and general motor deficits can be dissociated from execution of signs. Reviewed imaging data corroborate the lesion data in that the importance of the left hemisphere is re-confirmed. The data also establish the role of the right hemisphere in signed language processing. Alternative hypotheses regarding what aspects of signed language processing are handled by the right hemisphere are currently tested. The second section of the paper starts by addressing the role that early acquisition of signed and spoken language play for the neurofunctional activation patterns in the brain. Compensatory cognitive and communicative enhancements have also been documented as a function of early sign language use, suggesting an interesting interaction between language and cognition. Recent behavioural data on sign processing in working memory--a cognitive system important for language perception and production suggest e.g. phonological loop effects analogous to those obtained for speech processing. Neuroimaging studies will have to address this potential communality.

Functional Laterality↗
PubMed2000

Explanatory models for clinical and subjective indicators of periodontal disease in an adult population.

BACKGROUND: The aim of this study was to analyze indicators of periodontal disease using: (1) community periodontal index of treatment needs (CPITN), (2) subjectively reported change of front teeth position, and 3) subjectively reported gingival bleeding. METHOD: These 3 indicators were used in models with explanatory variables from 4 domains: (A) socio-economic attributes, (B) general health and health-related lifestyle, (C) dental attitudes and behaviors, and (D) dental status expressed as (number of teeth and DFT) for the clinically-determined dependent variables. In 1992, the study was carried out cross-sectionally in all 50-year olds in 2 Swedish counties using a questionnaire (n=6343) and clinical investigation of a 20 % sub-sample (n= 1040). RESULTS: Multiple and logistic regression analysis showed that explanatory patterns varied for the clinical and subjective indicators. Use of tobacco had strong effects in all models as did high care utilization. There were few associations with socio-economic attributes. The 2 subjective indicators "changed front position" and "gingival bleeding" associated with attitudes, behaviors and subjective health. Number of teeth and DFT covaried with clinical indicators. CONCLUSIONS: The main conclusions from this study are: (1) that it is possible to find multivariate models with acceptable goodness of fit for prediction of occurrence of periodontal indicators, and (2) that the lack of relation between social attributes and the disease gives arguments for a biological provenance of periodontitis.

Attitude to Health↗
PubMed2000

Dentist-related factors influencing the amount of prosthodontic treatment provided.

OBJECTIVES: To evaluate, using multivariate methods, the associations between indicators of the amount of prosthodontic treatment and dentist-related factors. METHODS: Questionnaires were sent to a random sample of 2,059 general dentists, response rate was 76%. Two indicators of prosthodontic activity were used as dependent variables: 1) reported weekly working hours used for prosthodontics and 2) reported numbers of produced single crowns, fixed partial dentures, and removable dentures. Independent variables were 'social and demographic attributes', 'job situation' and 'attitudes of dentists'. Multiple regression analysis was used in models with continuous dependent variables and logistic regression analysis for categorical dependent variables. RESULTS: 'Weekly working hours used for dental care of adults' showed a strong association in all models with the dependent variable 'weekly working hours used for prosthodontics'. Male dentists provided more prosthodontic services than female dentists, even if reporting less time used for prosthodontics. Private practitioners produced more fixed prosthodontics than dentists employed in the public dental health service. Dentists in the public dental health service reported a higher production of removable dentures than private practitioners. CONCLUSION: The results indicate that factors, besides those in the rational clinical model for decision-making, e.g. gender and delivery system, play a role in the provision of prosthodontic services.

Adult↗
PubMed2000

Dental conditions in middle-aged and older people in Denmark and Sweden: a comparative study of the influence of socioeconomic and attitudinal factors.

In 1998-99 two parallel questionnaire studies were performed in Denmark and Sweden. In Denmark the age group was 45-69 years and in Sweden 55-79 years. One aim was to study the influence of socioeconomic and attitudinal factors on dental status in the two countries. For the comparable age groups 55-69 years there was a striking difference in dental conditions between the countries. In Sweden, 72% had either all teeth remaining, missing teeth replaced by fixed prosthodontics, or only one or two single missing teeth not replaced. The corresponding figure for Denmark was 44%. Among Danes, 34% were wearing removable denture(s) or were edentulous in one jaw or both jaws, compared with 15%, among Swedes. In logistic regression models, higher income and longer education were significantly associated with the best dental status categories in Denmark but not in Sweden. In the model with wearing removable denture(s) as the dependent variable, lower income and lower education level showed a significant influence for the Danes. In Sweden, lower income showed a significant influence but education level was insignificant. In both Denmark and Sweden, a positive attitude toward the importance of dental appearance was associated with an increased risk of wearing removable denture(s).

Aged↗
PubMed2000

Social equality and dental conditions--a study of an adult population in Southern Sweden.

This study aimed to: describe dental conditions--focusing on prosthodontic variables--in relation to social conditions in the late 1990s in an adult population of Southern Sweden, evaluate if a change could be traced in the pattern of socioeconomic influences on dental conditions, and study if various attitudes toward dental care were associated with social as well as dental conditions. The study was based on questionnaire responses. Significant differences in dental conditions and denture prevalence were found for age and education. To a majority of the sample it was very important to have own teeth and/or fixed restorations and the opportunity to attend regular dental care. The cost for dental care was very important for 52% of the sample especially for men, those with low education, and those wearing removable denture. Need for dental care that could not be provided for because of the costs was experienced by 9%. Eighteen percent stated that they once or more had refrained from dental care because of the cost. Those with removable dentures and low education dominated. Besides socioeconomic differences in dental conditions, there were sociodental differences in attitudes concerning the importance of costs, self-estimated needs, and cost-barriers for dental care.

Adult↗
PubMed2000

Fluoride use by gender, age and dental fear among patients in a private practice.

The present study involved 145 consecutive self-referred patients (89 women, 56 men) at a private general practice, aimed at identifying whether differences in anxiety levels between women and men were related to self-administered fluoride prevention. Use of fluoride was assessed using a questionnaire to the use of tablets, rinse or other methods in addition to fluoride toothpaste. In logistic regression models, with fluoride use as the dependent variable, neither dental anxiety, measured by the Dental Anxiety Scale or by the Dental Fear Survey, nor age, were related to the use of fluorides. However, there was an association with gender. Thus, women used prophylactics 3.5-3.9 times as often as men. Women also expressed higher overall levels of dental fear. The probability in logit calculations for use of fluoride was highest (18%) for 30 year old women with a high DAS score. Additional surveys and research are needed in relation to the patient's cognition, attitude and behaviour towards oral disease, in order to enhance the success of preventive methods of oral disease and management of dental fear.

Adolescent↗
PubMed2000

The factor structure of the dental fear survey applied to private general practice patients awaiting dental treatment.

OBJECTIVES: Factor analysis of the Dental Fear Survey (DFS), applied to patients awaiting dental treatment in an average private practice general dental clinic in comparison to other analyses. METHOD: A combination of secondary and primary data. The latter were obtained from 145 consecutive self-referred patients (89 women, 56 men, aged between 17 and 82 years) at a private dental clinic, responding to an anonymous questionnaire. In analyses, principal components and principal axes factor analysis were used with varimax and oblimin rotations. Cronbach's alpha was calculated. RESULTS: There were differences in factor loading patterns between materials. No generally valid pattern could be discerned. Congruence between materials was higher for communalities. Oblimin rotation resulted in highly correlated factors. Excluding items with lower loadings yielded a clear one-factor solution. Cronbach's alpha was very high (0.96) for a one-factor solution on the primary material. CONCLUSIONS: The DFS may well be used as a measure of dental fear, but the dimensionality of the measure is more doubtful according to the present result. The DFS could be reduced to a unidimensional measure. In the clinical situation, a short measure such as the Dental Anxiety Scale (DAS) could be used for screening, giving guidance about whether the patient is afraid. For those with higher scores on the DAS, the DFS could be used for purposes of greater discrimination.

Adolescent↗
PubMed1999

A multilevel analysis of factors affecting pocket probing depth in patients responding differently to periodontal treatment.

3 distinct levels are involved in the periodontal inflammatory process: site, tooth, and individual. By focusing attention on the levels in the population, multilevel or hierarchical modelling (MLM) enables the researcher to understand where and how the effects at the levels involved are occurring. The aim of this paper is therefore to analyse the progression of periodontal disease using analytical models that consider the level hierarchy. 22 patients with periodontitis, in previous reports described as either non-responsive or responsive to periodontal treatment, were investigated. In the multilevel modelling method (MLM), the site pocket probing depth (PPD) is summarised in 3 parameters: the overall mean, the between-individual variance, and the within-individual, between-site variance. The model can readily be extended to include independent variables for sites, teeth and individuals. If these variables are important determinants of PPD, their inclusion in the model will lead to a reduction in residual variances between sites, teeth and individuals. The PPDs were used for construction of a PPD change variable (cPPD). This variable, together with the final registrations of PPD (fPPD) alone, were used as dependent variables in the MLM. Independent predictor variables, 12 on site-level, 3 on tooth-level, and 19 on individual-level, were constructed. The total number of sites assessed was 2236 distributed on 559 teeth in 22 subjects. Initially, a fixed, fully unconditional model (models A and E) was assessed, where no predictor variables were specified at any level. Different random-intercept models (B-D, F-H) were then calculated where the independent variables were inserted in blocks relating to each level. The variance components at all 3 levels were significantly larger than zero. This indicates that MLM is recommended for analysing the present data. The inserted predictors showed 100% sensitivity relating to the subject-level variance. Subsequent testing of the patient with disease or at high risk of disease would have to focus on diagnostic tests aimed at the individual teeth and sites. These tests would need to have a balance of sensitivity and specificity. Thus, by using multilevel modelling, the theoretical understanding of important factors in the pathogenesis of periodontitis is stimulated.

Adult↗