Tiffany L. Gary

Cultural competence: A systematic review of health care provider educational interventions

Objective:We sought to synthesize the findings of studies evaluating interventions to improve the cultural competence of health professionals. Design:This was a systematic literature review and analysis. Methods:We performed electronic and hand searches from 1980 through June 2003 to identify studies that evaluated interventions designed to improve the cultural competence of health professionals. We abstracted and synthesized data from studies that had both a before- and an after-intervention evaluation or had a control group for comparison and graded the strength of the evidence as excellent, good, fair, or poor using predetermined criteria. Main Outcome Measures:We sought evidence of the effectiveness and costs of cultural competence training of health professionals. Results:Thirty-four studies were included in our review. There is excellent evidence that cultural competence training improves the knowledge of health professionals (17 of 19 studies demonstrated a beneficial effect), and good evidence that cultural competence training improves the attitudes and skills of health professionals (21 of 25 studies evaluating attitudes demonstrated a beneficial effect and 14 of 14 studies evaluating skills demonstrated a beneficial effect). There is good evidence that cultural competence training impacts patient satisfaction (3 of 3 studies demonstrated a beneficial effect), poor evidence that cultural competence training impacts patient adherence (although the one study designed to do this demonstrated a beneficial effect), and no studies that have evaluated patient health status outcomes. There is poor evidence to determine the costs of cultural competence training (5 studies included incomplete estimates of costs). Conclusions:Cultural competence training shows promise as a strategy for improving the knowledge, attitudes, and skills of health professionals. However, evidence that it improves patient adherence to therapy, health outcomes, and equity of services across racial and ethnic groups is lacking. Future research should focus on these outcomes and should determine which teaching methods and content are most effective.

Barriers to Recruiting Underrepresented Populations to Cancer Clinical Trials : A Systematic Review

Racial and ethnic minorities, older adults, rural residents, and individuals of low socioeconomic status are underrepresented among participants in cancer‐related trials. The authors conducted a systematic review to determine the barriers to participation of underrepresented populations in cancer‐related trials. Their search included English‐language publications that reported original data on the recruitment of underrepresented groups to cancer treatment or prevention trials between 1966 and December 2005 in multiple electronic databases. They also hand‐searched titles in 34 journals from January 2003 to December 2005 and they examined reference lists for eligible articles. Titles and abstracts were reviewed to identify relevant studies. Data on barriers to participation were synthesized both qualitatively and based on statistically significant associations with trial enrollment. Of 5257 studies that were cited, 65 studies were eligible for inclusion in the current analysis, including 46 studies on recruitment into cancer therapeutic trials, 15 studies on recruitment into prevention trials, and 4 studies on recruitment into both prevention and treatment trials. Numerous factors were reported as barriers to participation in cancer‐related trials. However, only 20 of the studies reported statistically significant associations between hypothesized barriers and enrollment. The available evidence had limitations in quality regarding representativeness, justification of study methods, the reliability and validity of data‐collection methods, potential for bias, and data analysis. The results indicated that underrepresented populations face numerous barriers to participation in cancer‐related trials. The current systematic review highlighting the literature on recruitment of underrepresented populations to cancer trials and may be used as the evidence base toward developing an agenda for etiologic and intervention research to reduce the disparities in participation in cancer‐related trials. Cancer 2008.

Meta-Analysis of Randomized Educational and Behavioral Interventions in Type 2 Diabetes

PURPOSE this meta-analysis was conducted to assess the effect of educational and behavioral interventions on body weight and glycemic control in type 2 diabetes. MEHODS Studies selected for analysis were published randomized controlled trials that evaluated educational and behavioral interventions (no drug interventions) in type 2 diabetes (sample size 210). These criteria were applied to searches of electronic databases and relevant bibliographies. Data were independently abstracted by 2 reviewers and adjudicated by consensus. RESULTS Of the 63 articles that met the inclusion criteria, 18 provided enough information for pooled estimates of glycohemoglobin (total Ghb, HbA1, or HbA1 C). These 18 studies yielded 2720 participants (sample sizes of 18 to 749). Interventions ranged from 1 to 19 months; follow-up ranged from 1 to 26 months. Glycohemoglobin was reduced by a mean of 0.43%. When results were stratified by quality score, glycohemoglobin was -0.50% and -0.38% for studies with high and low quality scores, respectively. When weighting studies by sample size, fasting blood glucose was reduced by 24 mg/dL and weight by 3 lbs. CONCLUSIONS Previous educational and behavioral interventions in type 2 diabetes have produced modest improvements in glycemic control. Future research should refine such interventions and improve methodology.

Randomized controlled trial of the effects of nurse case manager and community health worker interventions on risk factors for diabetes-related complications in urban African Americans

BACKGROUND African Americans suffer disproportionately from diabetes complications, but little research has focused on how to improve diabetic control in this population. There are also few or no data on a combined primary care and community-based intervention approach. METHODS We randomly assigned 186 urban African Americans with type 2 diabetes (76% female, mean A SD age 59 A 9 years) to 1 of 4 parallel arms: (1) usual care only; (2) usual care + nurse case manager (NCM); (3) usual care + community health worker (CHW); (4) usual care + nurse case manager/community health worker team. Using the framework of the Precede-Proceed behavioral model, interventions included patient counseling regarding self-care practices and physician reminders. RESULTS The 2-year follow-up visit was completed by 149 individuals (84%). Compared to the Usual care group, the NCM group and the CHW group had modest declines in HbA(1c) over 2 years (0.3 and 0.3%, respectively), and the combined NCM/CHW group had a greater decline in HbA(1c) (0.8%. P = 0.137). After adjustment for baseline differences and/or follow-up time, the combined NCM/CHW group showed improvements in triglycerides (-35.5 mg/dl; P = 0.041) and diastolic blood pressure, compared to the usual care group (-5.6 mmHg; P = 0.042). CONCLUSIONS Combined NCM/CHW interventions may improve diabetic control in urban African Americans with type 2 diabetes. Although results were clinically important, they did not reach statistical significance. This approach deserves further attention as a means to reduce the excess risk of diabetic complications in African Americans.

Improving health care quality for racial/ethnic minorities: a systematic review of the best evidence regarding provider and organization interventions

BackgroundDespite awareness of inequities in health care quality, little is known about strategies that could improve the quality of healthcare for ethnic minority populations. We conducted a systematic literature review and analysis to synthesize the findings of controlled studies evaluating interventions targeted at health care providers to improve health care quality or reduce disparities in care for racial/ethnic minorities.MethodsWe performed electronic and hand searches from 1980 through June 2003 to identify randomized controlled trials or concurrent controlled trials. Reviewers abstracted data from studies to determine study characteristics, results, and quality. We graded the strength of the evidence as excellent, good, fair or poor using predetermined criteria. The main outcome measures were evidence of effectiveness and cost of strategies to improve health care quality or reduce disparities in care for racial/ethnic minorities.ResultsTwenty-seven studies met criteria for review. Almost all (n = 26) took place in the primary care setting, and most (n = 19) focused on improving provision of preventive services. Only two studies were designed specifically to meet the needs of racial/ethnic minority patients. All 10 studies that used a provider reminder system for provision of standardized services (mostly preventive) reported favorable outcomes. The following quality improvement strategies demonstrated favorable results but were used in a small number of studies: bypassing the physician to offer preventive services directly to patients (2 of 2 studies favorable), provider education alone (2 of 2 studies favorable), use of a structured questionnaire to assess adolescent health behaviors (1 of 1 study favorable), and use of remote simultaneous translation (1 of 1 study favorable). Interventions employing more than one main strategy were used in 9 studies with inconsistent results. There were limited data on the costs of these strategies, as only one study reported cost data.ConclusionThere are several promising strategies that may improve health care quality for racial/ethnic minorities, but a lack of studies specifically targeting disease areas and processes of care for which disparities have been previously documented. Further research and funding is needed to evaluate strategies designed to reduce disparities in health care quality for racial/ethnic minorities.

A systematic review of the methodological rigor of studies evaluating cultural competence training of health professionals

Purpose To systematically examine the methodological rigor of studies using cultural competence training as a strategy to improve minority health care quality. To the authors’ knowledge, no prior studies of this type have been conducted. Method As part of a systematic review, the authors appraised the methodological rigor of studies published in English from 1980 to 2003 that evaluate cultural competence training, and determined whether selected study characteristics were associated with better study quality as defined by five domains (representativeness, intervention description, bias and confounding, outcome assessment, and analytic approach). Results Among 64 eligible articles, most studies (no. = 59) were published recently (1990–2003) in education (no. = 26) and nursing (no. = 14) journals. Targeted learners were mostly nurses (no. = 32) and physicians (no. = 19). Study designs included randomized or concurrent controlled trials (no. = 10), pretest/posttest (no. = 22), posttest only (no. = 27), and qualitative evaluation (no. = 5). Curricular content, teaching strategies, and evaluation methods varied. Most studies reported provider outcomes. Twenty-one articles adequately described provider representativeness, 21 completely described curricular interventions, eight had adequate comparison groups, 27 used objective evaluations, three blinded outcome assessors, 14 reported the number or reason for noninclusion of data, and 15 reported magnitude differences and variability indexes. Studies targeted at physicians more often described providers and interventions. Most trials completely described targeted providers, had adequate comparison groups, and reported objective evaluations. Study quality did not differ over time, by journal type, or by the presence or absence of reported funding. Conclusions Lack of methodological rigor limits the evidence for the impact of cultural competence training on minority health care quality. More attention should be paid to the proper design, evaluation, and reporting of these training programs.

Risk Factors for Type 2 Diabetes Among Women with Gestational Diabetes: A Systematic Review

We conducted a systematic review of studies examining risk factors for the development of type 2 diabetes among women with previous gestational diabetes. Our search strategy yielded 14 articles that evaluated 9 categories of risk factors of type 2 diabetes in women with gestational diabetes: anthropometry, pregnancy-related factors, postpartum factors, parity, family history of type 2 diabetes, maternal lifestyle factors, sociodemographics, oral contraceptive use, and physiologic factors. The studies provided evidence that the risk of type 2 diabetes was significantly higher in women having increased anthropometric characteristics with relative measures of association ranging from 0.8 to 8.7 and women who used insulin during pregnancy with relative measures of association ranging between 2.8 and 4.7. A later gestational age at diagnosis of gestational diabetes, >24 weeks gestation on average, was associated with a reduction in risk of development of type 2 diabetes with relative measures of association ranging between 0.35 and 0.99. We concluded that there is substantial evidence for 3 risk factors associated with the risk of type 2 diabetes in women having gestational diabetes.

The Effects of a Nurse Case Manager and a Community Health Worker Team on Diabetic Control, Emergency Department Visits, and Hospitalizations Among Urban African Americans With Type 2 Diabetes Mellitus: A Randomized Controlled Trial

BACKGROUND Although African American adults bear a disproportionate burden from diabetes mellitus (DM), few randomized controlled trials have tested culturally appropriate interventions to improve DM care. METHODS We randomly assigned 542 African Americans with type 2 DM enrolled in an urban managed care organization to either an intensive or minimal intervention group. The intensive intervention group consisted of all components of the minimal intervention plus individualized, culturally tailored care provided by a nurse case manager (NCM) and a community health worker (CHW), using evidence-based clinical algorithms with feedback to primary care providers (eg, physicians, nurse practitioners, or physician assistants). The minimal intervention consisted of mailings and telephone calls every 6 months to remind participants about preventive screenings. Data on diabetic control were collected at baseline and at 24 months by blind observers; data emergency department (ER) visits and hospitalizations were assessed using administrative data. RESULTS At baseline, participants had a mean age of 58 years, 73% were women, and 50% were living in poverty. At 24 months, compared with the minimal intervention group, those in the intensive intervention group were 23% less likely to have ER visits (rate difference [RD], -14.5; adjusted rate ratio [RR], 0.77; 95% confidence interval [CI], 0.59-1.00). In on-treatment analyses, the rate reduction was strongest for patients who received the most NCM and CHW visits (RD, -31.0; adjusted RR, 0.66; 95% CI, 0.43-1.00; rate reduction downward arrow 34%). CONCLUSION These data suggest that a culturally tailored intervention conducted by an NCM/CHW team reduced ER visits in urban African Americans with type 2 DM. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT00022750.

Provider roles in the recruitment of underrepresented populations to cancer clinical trials

Providers play a vital role in the successful recruitment of underrepresented patients to cancer clinical trials because they often introduce the opportunity of clinical trials. The purpose of the current systematic review was to describe provider‐related factors influencing recruitment of underrepresented populations to cancer clinical trials.

Self-Administered Instruments to Measure Cultural Competence of Health Professionals: A Systematic Review

Background: Tools that measure knowledge, attitudes, and skills reflecting cultural competence of health professionals have not been comprehensively identified, described, or critiqued. Summary: We systematically reviewed English-language articles published from 1980 through June 2003 that evaluated the effectiveness of cultural competence curricula targeted at health professionals by using at least one self-administered tool. We abstracted information about targeted providers, evaluation methods, curricular content, and the psychometric properties of each tool. We included 45 articles in our review. A total of 45 unique instruments (32 learner self-assessments, 13 written exams) were used in the 45 articles. One third (15/45) of the tools had demonstrated either validity or reliability, and only 13% (6/45) had demonstrated both reliability and validity. Conclusions: Most studies of cultural competence training used self-administered tools that have not been validated. The results of cultural competence training could be interpreted more accurately if validated tools were used.