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At least 793 records · Page 44Linked to original sources
PubMed2005

Validation of a two-item quantitative questionnaire for the triage of women with urinary incontinence.

OBJECTIVE: To evaluate the reproducibility, construct validity, and preferences for the 2-item Stress/Urge Incontinence Questionnaire. METHODS: The questionnaire asks a patient to recall the number of stress urinary incontinence and urge urinary incontinence episodes she experienced during the preceding week. The 4-week prospective study included 3 office visits and enrolled women with stress, urge, or mixed urinary incontinence symptoms. The test-retest reproducibility was assessed after 3 days, and the construct validity of the questionnaire was evaluated against a diary and other measures of incontinence severity and effect. The bother associated with completing (patients) or analyzing (physicians) the diary was assessed. Both groups also reported their time requirements and preferences for the questionnaire or diary. RESULTS: Reproducibility for the classification of symptoms was moderately strong (kappa = .536). Test-retest agreement was good (64-80%) for all but balanced mixed incontinence (38%). Intraclass correlations revealed good reproducibility for the number of stress (.694), urge (.703), and total (.726) incontinence episodes. Significant (P < .01) correlations with other measures of incontinence established construct validity. Patients and physicians reported it took less time to complete the questionnaire than the diary, but the majority said the completion or analysis of the diary was of little or no bother and preferred the diary. CONCLUSION: The Stress/Urge Incontinence Questionnaire is a valid tool that can be used in clinical practice to differentiate between symptoms of stress and urge urinary incontinence to make an initial diagnosis, especially in primary care where incontinence is not a focus of the practice.

Adult↗
PubMed2002

Cervical spine outcomes questionnaire: its development and psychometric properties.

STUDY DESIGN: A cross-sectional study was conducted to analyze a convenience sample of patients seeking treatment for cervical spine conditions. OBJECTIVE: To develop and evaluate the psychometric properties of a comprehensive, disease-specific questionnaire for characterizing complaints of neck pain and evaluating the outcomes of treatments for these complaints. SUMMARY OF BACKGROUND DATA: There currently are a number of generic and disease-specific instruments for assessing complaints of neck pain. None comprehensively cover the wide range of factors considered essential in evaluating treatment outcomes. METHODS: The authors developed a comprehensive, disease-specific questionnaire for characterizing complaints of neck pain and evaluating the outcomes of treatments for these complaints. In this study, 216 patients who underwent surgery for cervical spine disorders completed the Cervical Spine Outcomes Questionnaire before treatment, then at 3 and 6 months after treatment. The data were used to evaluate the reliability, validity, and responsiveness of the questionnaire. RESULTS: The authors have shown that the Cervical Spine Outcomes Questionnaire has high test-retest reliability, good construct validity, and responsiveness to change after treatment. CONCLUSIONS: The Cervical Spine Outcomes Questionnaire is a comprehensive, disease-specific instrument for assessing complaints of neck pain and evaluating the outcomes of treatments for these complaints. It provides information on demographics, pain severity, functional disability, psychological distress, physical symptoms, health care utilization, and satisfaction. It appears to be acceptable to patients, easy to administer, highly reliable, valid, and responsive. It should be considered for use in monitoring patients with cervical spine conditions and in studies of cervical spine disorders and their treatments.

Adult↗
PubMed2005

Relative validity and reproducibility of a 14-item semi-quantitative food frequency questionnaire for cardiovascular prevention.

BACKGROUND: Dietary habits play a major role in cardiovascular disease risk but few simple nutrition assessment tools are available for clinical practice. We developed a 14-item food frequency questionnaire to evaluate dietary patterns in relation with coronary risk in a French population. DESIGN AND METHODS: This food frequency questionnaire gave different scores of intake: saturated fatty acids (six questions), mono-unsaturated fatty acids, Omega-3 and Omega-6/Omega-3 polyunsaturated fatty acids (five questions), and fruits and vegetables (three questions). Validity was assessed against a 7-day dietary history (n = 49 subjects) and against biomarkers (n = 181). The food frequency questionnaire was also administered twice with an interval of 15 days to evaluate its reproducibility (n = 20). RESULTS: Validity against dietary history was assessed with Spearman correlation coefficients which ranged from 0.47 (fruits and vegetables) to 0.63 (polyunsaturated fatty acids/saturated fatty acids) (all P < 0.05), with a mean value of 0.54. On average, 39% of the subjects were classified in the same quartile with the food frequency questionnaire and the dietary history and 84% in the same or adjacent quartile. Biomarker-based validity using Spearman correlation coefficients varied from 0.21 (saturated fatty acids) to 0.53 (Omega-3 polyunsaturated fatty acids) (all P < 0.05), with a mean value of 0.35. On average, 37% of the participants were classified in the same quartile with the food frequency questionnaire and the corresponding biomarkers and 73% in the same or adjacent quartile. Reproducibility assessed by the intraclass correlation coefficient ranged from 0.71 (mono-unsaturated fatty acids) to 0.93 (global score), with a mean value of 0.81. CONCLUSION: We validated a short food frequency questionnaire for dietary pattern assessment in coronary prevention.

Adult↗
PubMed2005

Validation of food frequency questionnaire for assessing dietary macronutrients and calcium intake in Italian children and adolescents.

OBJECTIVES: To validate a food frequency questionnaire to determine calcium and macronutrient intake in healthy children and adolescents. MATERIALS AND METHODS: The questionnaire consisted of 16 main food groups containing the main foods composing the diet of Italian children, a total of 136 items and 23 questions about food habits, supplements and servings. Color photographs to identify serving size were included. The questionnaire was validated by comparing it with the 7-day weighed record method in 37 healthy volunteers in two different age groups: children aged 6 - 10 years (n = 18) and adolescents aged 16 - 20 years (n = 19). RESULTS: The food frequency questionnaire seemed to overestimate the nutrient intake when compared with 7-day weighed records; however the two methods were highly correlated for all the nutrients considered. The range of Pearson's correlations between energy and nutrient intake (protein, fat, carbohydrates and calcium) determined from food frequency questionnaire and 7-day weighed record were 0.5-0.6 in children and 0.5-0.8 in young adults. Agreement between the two methods in classifying relative intakes was examined by determining the frequency of similar classification into terciles. Two thirds of the subjects were correctly classified for most nutrients, with a very low (2% to 5%) percentage of grossly misclassifications. DISCUSSION: The food frequency questionnaire has proved adequate to rank a pediatric population in terms of calcium and macronutrient intakes. The ranking of subjects is extremely useful for epidemiologic studies evaluating the relation between nutrient intake and disease.

Adolescent↗
PubMed2004

The validity and accuracy of the Work Productivity and Activity Impairment questionnaire--irritable bowel syndrome version (WPAI:IBS).

BACKGROUND: Irritable bowel syndrome is a common chronic functional gastrointestinal disorder characterized by recurrent abdominal pain and discomfort associated with alterations in bowel habit. Irritable bowel syndrome affects patients' quality of life and increases productivity loss. AIM: To assess validity and accuracy of the Work Productivity and Activity Impairment questionnaire in irritable bowel syndrome as a tool for quantifying the effects of irritable bowel syndrome on productivity and daily activities. METHODS: Validity and accuracy were evaluated in 135 irritable bowel syndrome patients relative to three measures of irritable bowel syndrome disease severity; a debriefing questionnaire; retrospective diary; Work Limitations Questionnaire, and an activity impairment measure (Dimensions of Daily Activities). RESULTS: Symptom severity scores, diary scores, Work Limitations Questionnaire and Dimensions of Daily Activities were significant predictors of work productivity and activity impairment questionnaire in irritable bowel syndrome measures of work time missed, and work and activity productivity loss (P = 0.04 to < 0.0001). Impairment due to irritable bowel syndrome was estimated to be 2.9-4.3% for work time missed and 22-32% for impairment at work, the equivalent of 9.7 -14 h lost productivity per week. Activity impairment was 24-41%. CONCLUSIONS: Discriminative validity of the Work Productivity and Activity Impairment questionnaire in irritable bowel syndrome was established, making it the only validated tool for measuring the relative differences between disease severity groups and quantifying work productivity loss and activity impairment in irritable bowel syndrome patients.

Absenteeism↗
PubMed2005

Assessment of quality of life in patients with uncontrolled vs. controlled acromegaly using the Acromegaly Quality of Life Questionnaire (AcroQoL).

OBJECTIVE: Acromegaly is a chronic disease with an important impact on quality of life. An acromegaly disease-generated quality of life questionnaire (AcroQoL) has recently been developed. We aimed to confirm reliability, construct validity and disease-specificity of the AcroQoL questionnaire. Second, we investigated the effect of remission status on health-related quality of life (HRQoL) in patients with acromegaly. DESIGN AND PATIENTS: Using a prospective, cross-sectional design, 33 patients with treated acromegaly and 22 patients with treated hormone-inactive pituitary adenoma under stable replacement therapy completed the German version of the AcroQoL questionnaire. MEASUREMENTS AND RESULTS: Cronbach's alpha analysis showed high reliability of the total score and the different scales and subscales in patients with acromegaly (alpha ranging from 0.83 to 0.93, item-total correlation 0.41-0.84). Patients with hormone-inactive pituitary adenoma showed lower reliability (alpha ranging from 0.17 to 0.75). Exploratory factor analysis in patients with acromegaly suggested a two-factorial solution with item distribution largely matching the scaling of the original Spanish questionnaire. Multiple regression analysis revealed significantly lower results of the total score and the different scales and subscales (indicating worse HRQoL) in patients with persistent acromegalic activity compared to patients with acromegaly in remission or discordant remission status. Consistently, IGF-I was an independent negative predictor of the different scores of the questionnaire. CONCLUSIONS: The AcroQoL questionnaire represents a reliable, construct valid and disease-specific tool for assessing health-related quality of life in patients with acromegaly. Patients with biochemically uncontrolled acromegaly showed significantly lower HRQoL than patients with acromegaly in remission or discordant remission status.

Acromegaly↗
PubMed2004

Hyperventilation in the vestibular clinic: use of the Nijmegen Questionnaire.

The objective of the present study was to determine the prevalence of hyperventilation syndrome in patients seen for vestibular assessment and to assess the clinical utility of the Nijmegen Questionnaire in this group. The Nijmegen Questionnaire and Dizziness Handicap Inventory (DHI) were administered prospectively to a consecutive series of 100 patients identified as candidates for vestibular assessment within the University Hospital Neuro-otology practice. Twenty-three per cent of patients seen for vestibular assessment were diagnosed with hyperventilation syndrome using the Nijmegen Questionnaire. Seventeen of these (74%) would have remained undetected had the Nijmegen questionnaire not been used. No relationship was found between vestibular assessment results and either Nijmegen or DHI scores. A significant correlation was found between DHI scores and Nijmegen Questionnaire scores (rho = 0.348, P = 0.0005). In conclusion, the Nijmegen Questionnaire is a quick, easy to administer and low-impact assessment tool for hyperventilation syndrome and is a useful adjunct to the otological consultation. Diagnosed patients can then be offered breathing control exercises as part of a vestibular rehabilitation programme.

Anxiety↗
PubMed2006

Psychometric evaluation of the Chinese version of the Fagerstrom Tolerance Questionnaire as a measure of cigarette dependence.

AIM: The aim of this study is to estimate the psychometric properties of the Chinese version of the Fagerstrom Tolerance Questionnaire as a measure of nicotine dependence. BACKGROUND: The Chinese Fagerstrom Tolerance Questionnaire has been used in smoking cessation programmes in Taiwan. However, the psychometric properties of the Chinese version have not been tested. METHODS: A cross-sectional, descriptive study was conducted from June 2004 to July 2005 with 247 adult smokers. The criterion validity of the Chinese Fagerstrom Tolerance Questionnaire was determined using two biomarkers (exhaled CO and saliva cotinine levels). Because the responses to the items are dichotomous or nominal, the validity and factorial structures were examined using tetrachoric techniques. Construct reliability was evaluated to accommodate the lack of tau-equivalence assumed in computing Cronbach's alpha. FINDINGS: The item 'smoke more in the morning' was not statistically significantly correlated with either biomarker because many participants expressed the desire to smoke after meals instead of in the morning. The items 'nicotine yield' and 'inhalation' performed poorly in terms of criterion validity and construct validity. This evidence supports modification of the Chinese version of the Fagerstrom Tolerance Questionnaire to the six-item Fagerstrom Test for Nicotine Dependence. In addition, the item 'difficulty refraining from smoking in forbidden places' had relatively poor psychometric performance. The reason may be culturally specific, having to do with the relative lack of forbidden places and restrictions on tobacco use in Taiwan. The predictive ability of the Chinese version of the Fagerstrom Tolerance Questionnaire for biomarkers is higher than the English version. The reliability coefficient (0.65) was higher than Cronbach's alpha, but did not meet the satisfactory standard of 0.70. CONCLUSION: The Chinese version of the Fagerstrom Tolerance Questionnaire is a fairly reliable and valid scale, but needs to be revised to accommodate cross-cultural differences.

Adolescent↗
PubMed2006

The diagnosis of asthma using a self-questionnaire in those suffering from allergic rhinitis: a pharmaco-epidemiological survey in everyday practice in France.

BACKGROUND: All recent guidelines recommend a search for asthma utilizing both specific interrogation and pulmonary function tests in patients suffering from allergic rhinitis. Although the mandatory place of spirometry has not been confirmed, a self-questionnaire containing nine specific questions on asthma symptoms in different daily life situations was found to be capable of discriminating asthmatics from nonasthmatics in a rhinitic population. OBJECTIVE: We addressed the questions of prevalence of asthma using a validated self-questionnaire and what might be the risk factors of being asthmatic according to that specific self-questionnaire. METHODS: Between April 2003 and September 2004, nearly 12,000 rhinitis patients were enrolled by more than 2300 physicians (78% general practitioners, 22% ear nose and throat specialists). Patients were consulting for an exacerbation of chronic rhinitis and did not have a previous diagnosis of asthma. Both doctors and patients filled out a specific questionnaire on rhinitis and asthma. RESULTS: Almost 30% of the patients had at least three positive answers to the self-questionnaire and could possibly be considered as asthmatics. We found five independent clinical risk factors for having >or=3 positive answers to the self-questionnaire. Severity of rhinitis (moderate-severe vs mild, OR=1.84; 95% CI=1.68-2.00), diagnosis of allergy (yes vs no) (OR=1.86; 95% CI=1.68-2.00), body mass index ( 30) (OR=0.51; 95% CI=0.39-0.66), type of rhinitis (persistent vs intermittent) (OR=1.25; 95% CI=1.15-1.37), and patient age ( 47) (OR=0.73; 95% CI=0.65-0.80). CONCLUSION: Asthma symptoms are frequent in rhinitics without a prior history of asthma. Several variables were shown to be predictive of asthma in these patients.

Adult↗
PubMed1990

Validation of an asthma knowledge questionnaire.

Asthma is responsible for much morbidity and mortality, which might be decreased by increasing parental and patient knowledge about asthma. This report describes the development and validation of an asthma knowledge questionnaire for use in the assessment of asthma knowledge. Two groups of respondents were examined. One group was designated 'high knowledge' and the other 'low knowledge'. The questionnaire had a maximum possible score of 31. The mean score of 69 'high' knowledge parents was 25.3 (median 25, range 18-31). By contrast, the mean score of 69 'low' knowledge parents was 13.0 (median 13, range 0-21). The difference between the two groups was statistically significant (P less than 0.0001). The questionnaire results were reproducible (tau = 0.94, P less than 0.01). Demographic characteristics such as education and socio-economic status were not important confounding variables. Face and content validity of the questionnaire were based on reference to published experience. Concurrent validity was demonstrated by the ability of the questionnaire to distinguish low from high knowledge parents. The questionnaire should prove to be a valuable research tool for the assessment of asthma knowledge either as part of an educational intervention or in a clinical situation.

Asthma↗
PubMed1997

Preschool hearing screening: evaluation of a parental questionnaire.

OBJECTIVE: To evaluate the validity of a parental questionnaire used to screen preschool children for persistent hearing impairment. METHODOLOGY: Six-hundred and eighty-five children aged 4-5 years from a Metropolitan area of Adelaide, Australia, were enrolled. Each parent completed a questionnaire aimed at detecting parental concerns about hearing impairment. Screening audiometry was then performed. Children who failed the initial audiometry screening underwent repeat audiometry screening 6-8 weeks later. The audiometry and questionnaire data were then compared. RESULTS: Of the 657 children who successfully completed initial audiometry, 544 (83%) passed and 113 (17%) failed. Of the 84 children who had follow-up audiometry, 64 (76%) passed. Parental concerns were identified on questionnaire in 50% of all children. Neither individual questions nor the number of concerns were found to relate to audiometry results. Compared with audiometry results, the hearing screening questionnaire had a sensitivity of 56% and specificity of 52%. CONCLUSIONS: The hearing questionnaire used in this study and in several Australian states is an ineffective screening test for detecting persistent hearing loss.

Audiometry↗
PubMed2006

Italian validation of the International Consultation on Incontinence Questionnaires.

OBJECTIVE: To validate the Italian version of two questionnaires for lower urinary tract symptoms (LUTS), i.e. the long (LF) and the short form (SF) of the International Consultation on Incontinence Questionnaire (ICIQ). METHODS: Two native Italian speakers and a native English speaker collaborated with clinical investigators through a multistep process to obtain a consensus version of the questionnaires. The resulting Italian versions were then pre-tested during a pilot study on 16 women for the LF and 10 for the SF. The final versions of the ICIQ-LF and ICIQ-SF were administered to two samples of consecutive female patients, aged > or = 18 years, who had been having LUTS for > or = 3 months, with respectively 82 and 50 women. Internal consistency and test-retest reliability were then assessed; to evaluate the latter, a subset of patients (25 for the ICIQ-LF and 42 for ICIQ-SF) was re-rated. To test the capacity of the questionnaires to discriminate women with or without LUTS (respectively cases and controls), a sample of healthy women was also enrolled and assessed. RESULTS: Both scales showed good psychometric properties overall. The correlation coefficient between ratings was > 0.75 in both questionnaires, and the discriminant power between cases and controls was confirmed for both scales. The ICIQ-SF showed good internal consistency for the total score (Cronbach's alpha 0.90). The sections of the ICIQ-LF 'impact of incontinence on everyday life', 'emotional aspects', 'urinary symptoms' and the degree of bother seemed to be internally consistent (Cronbach's alpha > 0.70); there was a weak relationship for items related to 'sexual matters' (Cronbach's alpha 0.38). CONCLUSION: The Italian version of both questionnaires is a valid and robust instrument which can now be used reliably both in daily practice and in clinical research.

Adolescent↗
PubMed2000

How well does a telephone questionnaire measure drinking water intake?

BACKGROUND: Few studies have assessed the validity or reliability of drinking water intake estimations. In studies investigating potential waterborne disease, this is very important. METHODS: We carried out a validity and reliability study to evaluate water intake estimations. The validity part of the study compared a telephone questionnaire to a diary. The reliability part of the study compared two telephone questionnaires. RESULTS: 253 participants were recruited. The most commonly consumed water intake categories were plain and boiled tap water. For persons aged less than 12 years, the median volume of plain water consumption was 2.9 glasses/day according to the diary. For persons aged 12 years and over, the median volume of plain water consumption was 3.0 glasses/day and for boiled water 3.0 glasses/day according to the diary. There was negligible systematic over or under reporting by participants for the telephone questionnaire in comparison to the diary and for the comparison of both telephone questionnaires. Water intake estimates were converted to categorical variables and the per cent agreement and weighted kappa statistics were calculated. For both the validity and reliability parts of the study the per cent agreement was 57-78% and the weighted kappa was 0.57-0.81. CONCLUSION: Water intake estimates show only moderate levels of validity and reliability when using a telephone questionnaire in comparison to a diary. IMPLICATIONS: Investigators of potential waterborne disease or nutritional research should exercise some caution in drawing conclusions from minor differences in drinking water intake that are obtained from a telephone questionnaire.

Adolescent↗
PubMed2006

Patient perspective on quality of geriatric care and rehabilitation--development and psychometric testing of a questionnaire.

The aim was to develop and test a questionnaire for use in telephone interviews concerning patient evaluation of geriatric care and rehabilitation. Instrument development was performed comprising qualitative interviews, construction of items, content validation, pilot study and data collection for evaluation of care and rehabilitation, clinical utility, reliability and construct validity. Qualitative interviews were performed with 12 elderly participants. The qualitative interviews formed the basis for the construction of 45 items. An expert panel performed a content validation of the questionnaire resulting in a revised version. A pilot study comprised 29 participants recently discharged from geriatric wards and the main data collection comprised 221 participants. Inclusion criteria were being able to perform a telephone interview and willingness to participate. Clinical utility was examined through questions to the interviewers, answered in writing. Cronbach's alpha coefficient was 0.79. According to a factor analysis and the evaluation of clinical utility, the underlying dimensions of the final revised questionnaire concern 'Respect and safety', 'Information and participation' and 'Rehabilitation interventions', scored in 18 items. In addition, one global item concerns satisfaction with care, resulting in 19 items in total. The revised questionnaire was named PaPeR, Patient Perspective on care and Rehabilitation. The questionnaire is considered valid, reliable and judged to have good clinical utility. The time consumption for the telephone interview is about 10-20 minutes. The questionnaire is useful in defining areas for potential quality improvement in geriatric wards.

Aged↗
PubMed2004

Psychometric properties of vision-related quality of life questionnaires: a systematic review.

The increased attention for quality of life (QOL) as an outcome measure has led to the development of numerous questionnaires to assess this construct in the field of ophthalmology. This article presents a systematic review on QOL questionnaires for people with vision impairments. We systematically searched and selected the literature. Furthermore, a rating list with descriptive aspects (e.g. target population) and psychometric aspects (e.g. reproducibility) was developed. The 31 questionnaires that were included in the review were rated on the basis of criteria stated in this rating list. The questionnaires were mostly targeted at cataract patients or visually impaired persons in general. Only a few of the questionnaires demonstrated sufficient psychometric quality. A recent development is the (re-)evaluation of questionnaires with Rasch analysis. This is one of the most important issues to which future research in this field should be directed.

Humans↗
PubMedDate not supplied

Validation of electronic data capture of the Irritable Bowel Syndrome--Quality of Life Measure, the Work Productivity and Activity Impairment Questionnaire for Irritable Bowel Syndrome and the EuroQol.

OBJECTIVES: To assess the comparability, reliability, and subject acceptability of electronic data capture (EDC) versions of Irritable Bowel Syndrome-Quality of Life (IBS-QOL), EuroQoL (EQ-5D) and Work Productivity and Activity Impairment (WPAI:IBS) instruments. METHODS: Comparability of EDC and paper questionnaires was evaluated in 72 subjects with IBS who completed a baseline EDC or paper questionnaire, a crossover questionnaire 24 hours later, and a retest of the crossover version at 1 week. The EDC version was presented on a hand-held device. Comparability was assessed using paired t-test statistics, intraclass correlation coefficients (ICC) and tests for internal consistency (Cronbach's alpha). RESULTS: No significant differences were found between scores obtained by paper questionnaire and EDC at the baseline and crossover assessments. ICCs between baseline and crossover assessments ranged from 0.83 to 0.96 for the IBS-QOL scores, 0.82 to 0.96 for the WPAI:IBS scores, and 0.77 to 0.82 for the EQ-5D. Internal consistency was comparable for the two data collection methods for the IBS-QOL overall score (0.96) and subscales and the EQ-5D Index (0.70 vs. 0.74). Retest statistics (ICC) were generally comparable between the EDC and paper versions for all scores. Ease of use was comparable for the two modes of administration, but more patients preferred EDC (47.2%) than the paper questionnaire (23.6%). CONCLUSIONS: EDC versions of the IBS-QOL, EQ-5D, and WPAI:IBS are comparable to paper questionnaires in internal consistency and test-retest reliability, and have greater patient acceptability.

Absenteeism↗
PubMed2004

Validity and reliability of the Turkish Migraine Disability Assessment (MIDAS) questionnaire.

OBJECTIVES: The aim of this study is to assess the comprehensibility, internal consistency, patient-physician reliability, test-retest reliability, and validity of Turkish version of Migraine Disability Assessment (MIDAS) questionnaire in patients with headache. BACKGROUND: MIDAS questionnaire has been developed by Stewart et al and shown to be reliable and valid to determine the degree of disability caused by migraine. DESIGN AND METHODS: This study was designed as a national multicenter study to demonstrate the reliability and validity of Turkish version of MIDAS questionnaire. Patients applying to 17 Neurology Clinics in Turkey were evaluated at the baseline (visit 1), week 4 (visit 2), and week 12 (visit 3) visits in terms of disease severity and comprehensibility, internal consistency, test-retest reliability, and validity of MIDAS. Since the severity of the disease has been found to change significantly at visit 2 compared to visit 1, test-retest reliability was assessed using the MIDAS scores of a subgroup of patients whose disease severity remained unchanged (up to +/-3 days difference in the number of days with headache between visits 1 and 2). RESULTS: A total of 306 patients (86.2% female, mean age: 35.0 +/- 9.8 years) were enrolled into the study. A total of 65.7%, 77.5%, 82.0% of patients reported that "they had fully understood the MIDAS questionnaire" in visits 1, 2, and 3, respectively. A highly positive correlation was found between physician and patient and the applied total MIDAS scores in all three visits (Spearman correlation coefficients were R= 0.87, 0.83, and 0.90, respectively, P <.001). Internal consistency of MIDAS was assessed using Cronbach's alpha and was found at acceptable (>0.7) or excellent (>0.8) levels in both patient and physician applied MIDAS scores, respectively. Total MIDAS score showed good test-retest reliability (R= 0.68). Both the number of days with headache and the total MIDAS scores were positively correlated at all visits with correlation coefficients between 0.47 and 0.63. There was also a moderate degree of correlation (R= 0.54) between the total MIDAS score at week 12 and the number of days with headache at visit 2 + visit 3, which quantify headache-related disability over a 3-month period similar to MIDAS questionnaire. CONCLUSION: These findings demonstrated that the Turkish translation is equivalent to the English version of MIDAS in terms of internal consistency, test-retest reliability, and validity. Physicians can reliably use the Turkish translation of the MIDAS questionnaire in defining the severity of illness and its treatment strategy when applied as a self-administered report by migraine patients themselves.

Adolescent↗
PubMed1977

Differences between dental health data obtained by interviews and questionnaires.

Two hundred and eighty-six persons out of a population of 358 were interviewed about dental health. Approximately 9 months later the same group was posed identical questions in a self-administered questionnaire. An open-ended question about reasons for loss of teeth showed nearly 50% more answers on the questionnaire than in the interview. The number of answers in the questionnaire fell with increasing age and decreasing income and/or lower social class, while sex, age, income, and social class seemed to have only a minor effect on the number of answers in the interview. The number of two-reply categories varied between the interview and the questionnaire. To questions about water fluoridation and covering of dental expenses by Social Security, married couples gave more often identical replies on the questionnaire than in the interview. The findings imply that the method itself, i.e. the choice between the interview and questionnaire methods, is of importance for the results as such.

Adult↗