Search PubMed⌕ Search

Biomedical subjects

Elizabeth M Badley

Publications and source records attributed to Elizabeth M Badley.

35 records · Page 2Linked to original sources
PubMed2004

Activity limitation, coping efficacy and self-perceived physical independence in people with disability.

OBJECTIVE: This study examines whether the relationships between activity limitations and independence are mediated by coping efficacy. METHOD: Data come from a cross-sectional survey of 286 adults, aged 55 or older, with osteoarthritis (OA) and/or osteoporosis (OP). Physical independence was assessed by asking to what extent respondents' OA/OP had affected their independence on a 5-point scale from 'not at all' to 'a great deal'. Activity limitations were examined in three domains: personal care, community mobility, and household activity. A coping efficacy scale was derived from three items scored on a 5-point Likert-type scale from strongly disagree to strongly agree. Structural equation modelling was used to test the model. RESULTS: Activity limitation in household activities was directly associated with perceptions of independence, with a statistically significant standardized path coefficients of -0.32. The effect of activity limitation in personal care was partially mediated by coping efficacy with a direct effect of -0.41 which was partially offset by coping efficacy to give a net effect of -0.308. The effect of community mobility on independence was completely mediated through coping efficacy with significant standardized path coefficients of -0.85 (community mobility to coping efficacy) and -0.14 (coping efficacy to independence). The overall model's goodness of fit was excellent (R =0.59, ch-square/df=1.4, CFI=0.97, and NNFI=0.97). CONCLUSION: Activity limitation had a detrimental effect on the level of self-perceived independence. Coping efficacy showed a significant mediating effect between activity limitation and self-perceived independence for the domains of personal care and community mobility, but not household tasks. This study suggests that how activity limitation affects perceptions of independence varies across activity limitation domains, and indicates the importance of incorporating activity limitation domains in future studies.

Activities of Daily Living↗
PubMed2004

Impairment and activity limitation associated with epiphyseal dysplasia in children.

OBJECTIVES: To develop a profile of impairment and activity limitation among children with epiphyseal dysplasia (ED) and to identify the relationship between these 2 domains. DESIGN: Cross-sectional study. SETTING: Acute, pediatric academic and health sciences center. PARTICIPANTS: Eleven subjects with multiple epiphyseal dysplasia (MED) and 17 subjects with spondyloepiphyseal dysplasia (SED), with a mean age of 12.9 years. INTERVENTIONS: Not applicable. Main outcome measures Anthropometric indexes of growth and nutrition, joint range of motion (ROM) and alignment, muscle strength, pain, and activity limitation. RESULTS: Subjects with SED had significantly shorter stature than the reference population (P<.01). Seventy-three percent of participants with MED and 77% of those with SED were above average or overweight for their height (P<.01). Both groups presented with moderate to severe joint ROM impairment, with greater lower-extremity involvement. Subjects with SED had worse outcomes with respect to overall ROM and alignment impairments (P<.01), particularly in their upper extremities (P<.01), than subjects with MED. Significant overall muscle weakness was noted in all subjects (z=-1.81; P<.01). Ninety-four percent of subjects with SED reported pain with activity, compared with 64% of those with MED (P=.04), although pain intensity did not differ between groups. Fifty percent of subjects had undergone orthopedic surgery. Mild activity limitation was reported by all subjects (mean score, 87.7+/-18.83). Significant correlations were identified between height for age and strength (r=.50) and pain and activity limitation (r=-.50). CONCLUSIONS: Despite moderate to severe impairments, all subjects reported surprisingly mild activity limitation. A positive correlation was identified between pain and activity limitation. This study also identified and described patterns of muscle weakness, pain, and nutritional concerns not previously reported in the ED literature.

Adolescent↗
PubMed2004

Statistical measures were proposed for identifying longitudinal patterns of change in quantitative health indicators.

OBJECTIVE: To propose statistical measures to identify different longitudinal patterns of change in quantitative health indicators. METHODS: The authors propose several simple measures to discriminate between stable-unstable, increasing-decreasing, linear-nonlinear, monotonic-nonmonotonic patterns of change. They then suggest using factor analysis to select the subset of nonredundant measures, and cluster analysis, based on the selected measures, to identify subgroups of patients with similar longitudinal trajectories. The proposed approach is illustrated using data on osteoarthritis disability from a longitudinal study undertaken in Toronto, Ontario, in 1996-2001. Disability was measured at four points in time for 835 patients, using the Western Ontario and McMaster Universities Osteoarthritis (WOMAC) index. RESULTS: The proposed measures allowed the detection of individual patients with specific patterns of change and identification of four different groups of patients with WOMAC scores that are (1) regularly increasing, (2) regularly decreasing, (3) stable over time, or (4) highly unstable, with abrupt changes or short-term fluctuations. CONCLUSION: The proposed approach may be used to (1) screen even large databases to identify particular patterns of change; or (2) summarize different patterns of change by classifying patients into groups with similar trajectories. Once identified, the groups can be investigated to determine whether there are differences in patient characteristics or outcomes.

Aged↗
PubMed2004

Effects of use of specialty services on disease-modifying antirheumatic drug use in the treatment of rheumatoid arthritis in an insured elderly population.

BACKGROUND: In community settings, disease-modifying antirheumatic drug (DMARD) use for rheumatoid arthritis (RA) falls short of treatment recommendations. This population-based study investigates the relationship between the use of DMARDs and specialty care in an insured population. METHOD: A cohort of individuals aged 65 or older with RA was identified from a population-based physician billing database in Ontario, Canada, together with information on visit rates to general and specialist physicians and visit-specific diagnoses. DMARD prescription data were obtained from the Ontario Drug Benefits Plan database. The proportions of individuals with RA using DMARDs and specialist care were calculated for the 43 counties in Ontario, and the relationship between the 2 was determined using logistic multilevel modeling, controlling for possible confounders. RESULTS: A total of 13,698 RA individuals aged 65 or older were identified, representing 1% of the 65-or-older population. Within this cohort, 58% received DMARDs and 68% made 1 or more RA-related visits to a specialist in 3 years. There was considerable variation by county in both the proportion of those with RA making visits to specialists (39-82 per 100 RA population) and receiving DMARDs (36-81%). The use of DMARDs was significantly associated with the use of specialist services by individuals with RA (odds ratio 1.9 [95% confidence interval 1.87, 1.88] for counties with highest versus lowest proportional use of specialists) independent of effects of age, sex, income, and comorbidities. CONCLUSION: Even in a universally funded setting, suboptimal treatment of RA is associated with lack of access to specialist services. These findings are likely applicable to many jurisdictions worldwide.

Adolescent↗
PubMed2004

Perceived need for workplace accommodation and labor-force participation in Canadian adults with activity limitations.

We examined how perceived need for workplace accommodation affects labor-force participation in people with disabilities. We analyzed a Canadian survey with structural equation modeling to test a model incorporating activity limitations and perceived need for workplace accommodations. The results suggested that the effect of upper- and lower-body activity limitation on labor-force participation was mediated by perceived need for workplace accommodations. Thus, the provision of adequate workplace accommodations could enhance labor-force participation in people with disabilities.

Adult↗
PubMed2003

Using publicly available directories to trace survey nonresponders and calculate adjusted response rates.

In population-based surveys, sample lists are often out of date by the time data collection begins. Consequently, response rates, and the perceived validity of the survey, may be compromised by the unknowing inclusion of ineligible subjects. A strategy to address this issue is ascertainment of survey nonrespondents' eligibility status, enabling post hoc adjustment of response rates. In 1995-1996, population surveys were carried out in two Ontario, Canada, communities. Despite intensive follow-up, the status of 8949 (18.6%) of the 48218 potential subjects in these surveys remained unknown. In response, 500 "unknowns" from each community were randomly selected for tracing by using publicly available telephone directories and, where applicable, city directories. These tracing efforts classified persons into one of three groups: "ineligible" (moved before the mailing), "true nonresponder" (present when the survey was mailed), and "remains unknown" (no directory listing found). Publicly available directories clarified the status of 76.0% of potential participants, reducing the proportion of "unknowns" from 18.6% to 4.6%. Applying the estimated proportions of "ineligibles" from each area resulted in response rates adjusted from 63.8% to 71.2% and from 72.8% to 74.9% in the survey areas. Publicly available directories were used to successfully trace the majority of survey nonresponders, thus strengthening confidence in the survey's results.

Aged↗
PubMed2003

Critical shortage of orthopaedic services in Ontario, Canada.

BACKGROUND: Questions regarding the adequacy of the current orthopaedic workforce in Canada to meet the present and future demands for orthopaedic services raise the need for accurate estimates of the supply and demand for orthopaedic services. The present study provides estimates of current supply of orthopaedic services in Ontario, the largest province of Canada, in order to allow for direct comparisons with data on workforce requirements. METHODS: All identified orthopaedic surgeons in Ontario were sent a self-administered questionnaire in 2000, which was similar to a previous survey in 1997. The age and gender of eligible respondents were obtained from the College of Physicians and Surgeons of Ontario. One full-time-equivalent orthopaedist was assumed to have 2200 annual hours of direct patient contact and to provide forty-four weeks of clinical work per year. RESULTS: The response rate was 94%. The mean age of the 337 active orthopaedic surgeons was forty-nine years, an increase of four years since 1997. Six percent of the respondents were women in both survey years. Approximately twenty-three half days of office and surgery time per 100,000 population were reported, which represents approximately two full-time equivalent orthopaedic surgeons per 100,000 population. On the average, eight half days of combined office and surgery time were reported per surgeon per week. CONCLUSIONS: The estimated supply of orthopaedic surgeons in Ontario (two full-time equivalents per 100,000 population) falls short of the recently calculated requirement in the United States (5.6 full-time equivalents per 100,000 population). These data suggest that there is currently a shortage of orthopaedic services in Ontario, which will be exacerbated by the aging of a profession already working near full capacity.

Health Services Needs and Demand↗
PubMed2003

Consistent low prevalence of arthritis in quebec: findings from a provincial variation study in Canada based on several canadian population health surveys.

OBJECTIVE: To examine interprovincial variations of arthritis prevalence focusing on comparisons between Quebec and the rest of Canada. METHODS: Data were derived from the 1991 General Social Survey (GSS), the 1991 Health and Activity Limitation Survey (HALS), and the 1994 and 1996 National Population Health Surveys (NPHS). Arthritis was variously ascertained through self-report of people aged 15 years or older. Prevalence in Quebec was compared with other provinces using extremal quotients (EQ) and correlation analysis. Multiple logistic regression analysis (1996 NPHS) was used to determine whether the low prevalence in Quebec persisted after controlling for confounding factors including age, sex, education, marital status, occupation, body mass index (BMI), comorbidity, and smoking. RESULTS: Quebec consistently had the lowest provincial prevalence of arthritis, with age-sex adjusted prevalences of 18.4% (GSS), 1.9% (HALS), 8.8%, and 10.1% (1994 and 1996 NPHS), which were significantly lower than the corresponding national estimates: 21.2%, 3.1%, 12.9%, and 13.3%. EQ from different surveys varied from 1.5 to 3.0 (significantly > 1). Correlation analyses reveal that relative rankings for provinces were consistent in all surveys. Logistic regression analyses showed a low risk of arthritis for Quebecois: odds ratio 0.75 (95% confidence interval 0.65, 0.87) after controlling for potential confounding factors. CONCLUSION: The low prevalence of arthritis observed in Quebec cannot be explained by potential confounding factors included in the NPHS and warrants further epidemiological studies.

Adolescent↗
PubMed2003

Patient and provider factors related to comprehensive arthritis care in a community setting in Ontario, Canada.

OBJECTIVE: To determine factors that correlate with recommendations for nonpharmacologic and pharmacologic interventions (comprehensive therapy) in community dwelling adults. METHODS: Eligible participants were >/= 55 years of age with hip and knee arthritis symptoms and disability. Comprehensive therapy was classified as a recommendation for exercise and weight loss (if required) and any pharmacotherapy. RESULTS: Only one-half of participants received a recommendation for comprehensive therapy. Participants who had seen a specialist and a therapist were almost twice as likely to receive a recommendation for comprehensive therapy. CONCLUSION: In our setting, many people with hip or knee arthritis were not receiving even minimum recommended treatment. Changes in educational and organizational policies are needed to address this situation.

Comprehensive Health Care↗
PubMed2002

The effect of education and income on need and willingness to undergo total joint arthroplasty.

OBJECTIVE: Individuals with lower socioeconomic status (SES) receive less arthritis care, including joint arthroplasty. However, no studies have considered the expectations or needs of the patients. Our objective was to assess the effect of education and income on the potential need for, and the willingness to consider hip and knee arthroplasty. METHODS: Through a mail/telephone survey of 48,218 persons ages 55 years or older residing in 2 areas of Ontario, Canada, 3,307 individuals with moderate-to-severe hip/knee problems were identified. These individuals received a questionnaire to assess education, income, arthritis severity, and comorbidity. In a subset of these subjects, we conducted interviews to evaluate the willingness to consider arthroplasty, and we also performed clinical and radiographic examinations of the joints to validate self-reports of arthritis. The potential need for arthroplasty was defined as the presence of severe arthritis (as scored by the Western Ontario and McMaster Universities Osteoarthritis Index), with no absolute contraindications to surgery. Separate logistic regression models examined the independent effects of education and income on the potential need for, and definite willingness to consider arthroplasty, after controlling for age, sex, and region of residence. Potential unmet need was estimated as the proportion of subjects with the need for arthroplasty who were not already on a surgery waiting list, who were definitely willing to consider arthroplasty, and who had evidence of arthritis by examination and radiography. RESULTS: Response rates were at least 72% for all questionnaires and interviews. Less education (adjusted odds ratio [OR] 1.57 for less than high school versus postsecondary education, 95% confidence interval [95% CI] 1.17-2.11) and lower income (adjusted OR 1.83 for </=$20,000 versus >$40,000, 95% CI 1.24-2.70) were independently associated with a greater likelihood of having the potential need for arthroplasty. Among the subjects with potential need, neither education nor income was independently associated with a definite willingness to consider arthroplasty. Thus, taking willingness into consideration, individuals with less education and/or lower income were more likely to have potential unmet need for arthroplasty. CONCLUSION: Persons with lower SES had a greater need for, and were equally willing to consider arthroplasty, compared with those with higher SES. Thus, observed SES disparities in the rates of performed arthroplasties cannot be explained by a lower need or less willingness to undergo arthroplasty in those with lower SES.

Aged↗
PubMed2002

Adaptation to disability: applying selective optimization with compensation to the behaviors of older adults with osteoarthritis.

This research extends the use of P. B. Baltes and M. M. Baltes's (1990) theory of selective optimization with compensation (SOC) in an effort to conceptually integrate the adaptational behaviors of 248 older adults with disability arising from osteoarthritis. The authors also studied the relationship of SOC to age, illness variables, disability, illness perceptions, and support. The results highlight the variability and plasticity of older adults' efforts to manage disability, with most efforts aimed at compensation and optimization rather than selection. The benefit of using SOC to study adaptation to chronic illness and disability is discussed.

Adaptation, Psychological↗
PubMed2002

Barriers to providing adequate rheumatology care: implications from a survey of rheumatologists in ontario, Canada.

OBJECTIVE: To determine what, if any, barriers exist that prevent rheumatologists from providing adequate rheumatology care. METHODS: All 158 identified rheumatologists in Ontario were sent a self-administered questionnaire and followed up by telephone. RESULTS: The response rate was 83%. All but 6 rheumatologists reported at least one barrier to the provision of service. The 3 most commonly reported barriers were the cost of drugs for patients (83%), billing policies and regulations for consultation and followup visits (72%), and long waiting times for patients (61%). Rheumatologists reporting the latter had significantly longer waiting times (12 vs 4 wks) for new non-urgent patients, although there was no difference for new patients with inflammatory arthritis. Nearly three-quarters of respondents had changed the patterns of their practice over the last 3 years, with significant increases in the amount of independent medical services (e.g., third party billing) and pharmaceutical company work. The majority (89%) of responding rheumatologists reported having at least some difficulty in making ends meet from rheumatology practice alone and 28% found it was not possible. CONCLUSION: These results indicate that the majority of rheumatologists face significant barriers to providing adequate care. Given the recruitment and service provision concerns in Canada, these barriers to service need to be addressed to ensure adequate provision of care.

Adult↗
PubMedDate not supplied

The relationship between function, self-perception, and spinal deformity: Implications for treatment of scoliosis in children with spina bifida.

The purpose of this study was to determine the relationship of spinal deformity with physical function and self-perception in children with spina bifida. Ninety-eight eligible children with scoliosis and spina bifida were identified; 80 of them (82%) consented to participate. Spinal deformity was measured in many ways, including scoliosis, coronal balance, and pelvic obliquity. Measures of physical function included the Sitting Balance Scale, Jebsen Hand Scale, Hoffer Ambulation Scale, the Spine Bifida Spine Questionnaire, and the Activities Scale for Kids (ASK). Self-perception was determined with Harter's Self-Perception Profile. No relationship was found between spinal deformity and overall physical function (ASK). Of all aspects of spinal deformity, only coronal imbalance was significantly related to only one aspect of physical function (ie, sitting imbalance). No aspect of spinal deformity was related to self-perception. In conclusion, surgeons should be clear in their indications for surgery and recognize that in the short term the potential benefit of surgery may be, at best, to improve only sitting balance.

Activities of Daily Living↗
PubMedDate not supplied

Proxy reporting and the increasing prevalence of arthritis in Canada.

BACKGROUND: Analyses of the 1994/95 to 1998/99 Canadian National Population Health Surveys (NPHS) reveal significant, and greater than projected, increases in the reported arthritis in the household population aged 15+ years, from 13.4 to 16.0%. The objectives of this study were to determine whether the increasing prevalence of arthritis can be explained by a) changes in the age and sex structure of the population, or b) the variation in the proportion of proxy respondents and whether proxy reporting affects the overall prevalence estimate. METHODS: Overall analyses of 1994/95, 1996/97 and 1998/99 cycles of the NPHS, for arthritis or rheumatism reported as a long-term health problem diagnosed by a health professional. Stratified analyses, by respondent type, to account for the decreasing proportion of proxy respondents over time (33% to 16%). RESULTS: Overall age-sex standardized prevalence estimates were similar to crude estimates. The crude prevalence of arthritis in proxy respondents was stable (approximately 8.5%), whereas in self-respondents it increased from 15.8 to 17.4% over the 3 cycles. Adjustment for the lower prevalence in proxy respondents increased the estimated overall prevalence of arthritis by at least 1 percentage point for each cycle year. The disparity between self- and proxy reporting was higher for younger people and females. CONCLUSION: Significant disparity exists in age- and sex-specific prevalence estimates between self- and proxy respondents. The increase in prevalence of arthritis over time is a result of increased reporting by self-respondents. Proxy reporting affects overall prevalence. The findings have implications for the use of NPHS data.

Adolescent↗
PubMedDate not supplied

Beyond access: who reports that health care is not being received when needed in a publicly-funded health care system?

OBJECTIVES: To examine the relationship between reporting that health care was not received when needed in Canada's publicly-funded health care system and contact with the health care system, and to explore whether there is a differential impact of specific chronic conditions. METHODS: Analyses were carried out on the 2000/2001 Canadian Community Health Survey. The proportion of survey respondents who reported that they had not received health care when it was needed was determined overall, and for individuals with selected socio-demographic, health status, and health care utilization characteristics, as well as stratified by various chronic conditions. Multivariate logistic regression was then employed to examine possible predictors of having reported that health care was not received when it was needed during the previous year. RESULTS: Approximately 13% of Canadians reported that health care was not received when they felt it was needed during the previous year. These individuals reported higher rates of health care utilization, worse health status, were more likely to have chronic health conditions (particularly conditions such as fibromyalgia, Crohn's disease, and chronic bronchitis for which there is no effective treatment), and were more likely to be female, younger, white, have higher education and lower income. CONCLUSION: Reporting that health care was not received when it was needed may not be related to accessibility but rather to a perceived failure of the system to meet the individual's needs.

Adolescent↗
PubMedDate not supplied

The relationship between local availability and first-time use of specialists in an arthritis population.

OBJECTIVE: To determine what health area characteristics, in particular local availability of specialists, were associated with the age-sex adjusted ambulatory utilization rate of musculoskeletal (MSK) specialists (i.e., rheumatologists, orthopaedic surgeons and general internists) in an arthritis and rheumatism (A&R) cohort. METHODS: The cohort was composed of respondents aged 15+ from the 1996/97 Ontario Health Survey who self-reported A&R and/or had a primary care encounter for A&R during the two years preceding the survey, as determined by their billings in the Ontario Health Insurance Plan. Respondents with prior exposure to MSK specialists were excluded. The outcome of an encounter with a MSK specialist for A&R was determined during the three-year period after the survey. RESULTS: The A&R cohort was composed of 5,052 respondents, of whom 11% had an A&R encounter with a MSK specialist in the three-year post-survey period. There was area variation in the age-sex adjusted ambulatory utilization rate of MSK specialists in the A&R cohort. The backwards stepping linear regression to examine predictors for seeing MSK specialists found a positive association with local availability of rheumatologists, a negative association with the proportion of high school graduates in the health area and a negative association with the proportion of people aged 65 years and older. DISCUSSION: At the health area level, we found that the local availability of rheumatologists was an important factor associated with utilizing MSK specialists for A&R-related conditions in a cohort of respondents who have not been previously exposed to MSK specialists for musculoskeletal-related conditions.

Adolescent↗