Maternal body mass index (BMI) is independently associated with the control of diabetes mellitus in young patients

OBJECTIVE

Investigate the cross-sectional association of glycemic control of ethnically diverse youth with diabetes mellitus with family characteristics.

DESIGN

Family study of 91 youth (probands) with diabetes mellitus and 142 parents.

RESULTS

Children's age and HbA1c averaged 11.9 years and 8.9%, respectively; 69% were minorities. After adjustment, poor glycemic control was associated with minority race/ethnicity, more television viewing, and higher maternal body mass index (BMI). Average HbA1c was 1.2 and 1.9% units higher for children of overweight and obese mothers, respectively (p = 0.004).

CONCLUSIONS

The positive association between maternal body composition and child HbA1c likely represents the unique behavioral influence of mothers.

Combating Obesity at Community Health Centers (COACH): a quality improvement collaborative for weight management programs

Community health centers (CHCs) seek effective strategies to address obesity. MidWest Clinicians' Network partnered with [an academic medical center] to test feasibility of a weight management quality improvement (QI) collaborative. MidWest Clinicians' Network members expressed interest in an obesity QI program. This pilot study aimed to determine whether the QI model can be feasibly implemented with limited resources at CHCs to improve weight management programs. Five health centers with weight management programs enrolled with CHC staff as primary study participants; this study did not attempt to measure patient outcomes. Participants attended learning sessions and monthly conference calls to build QI skills and share best practices. Tailored coaching addressed local needs. Topics rated most valuable were patient recruitment/retention strategies, QI techniques, evidence-based weight management, motivational interviewing. Challenges included garnering provider support, high staff turnover, and difficulty tracking patient-level data. This paper reports practical lessons about implementing a weight management QI collaborative in CHCs.

Three-in-one nerve block with different concentrations of bupivacaine in total knee arthroplasty: randomized, placebo-controlled, double-blind trial

Pain after total knee arthroplasty may be severe and lead to adverse outcomes. Using 2 concentrations of bupivacaine, we investigated 3-in-1 nerve block's effect on pain control, narcotic use, sedation, and patient satisfaction. One hundred five patients undergoing unilateral total knee arthroplasty were randomized into 3 groups: low-dose or high-dose bupivacaine or placebo. Ninety-nine patients completed the study. Three-in-1 nerve block reduced patient-controlled opioid analgesia usage and improved pain relief in the early postoperative period but had little effect beyond postoperative day 1. There were no significant differences among groups with respect to nausea or sedation. Patients in each group exhibited high overall satisfaction. Low-dose bupivacaine was superior to high-dose bupivacaine for pain relief, narcotic consumption, and patient satisfaction in the early postoperative period.

Insufficient sleep in young patients with diabetes and their families

OBJECTIVE

We examined sleep in families of individuals with type 1 diabetes and the relationship of sleep with obesity, diabetes, and insulin resistance.

METHODS

Probands with type 1 diabetes diagnosed before age 18 and first- and second-degree relatives were included (n = 323). Demographic, anthropometric and clinical variables, and self-reported sleep duration and napping were assessed.

RESULTS

On average, adults (≥20 years) slept 7.5 (SD 1.5) hr, whereas children (5-11 years) and adolescents (12-19 years) slept 9.8 (SD 1.1) and 8.5 (SD 1.9) hr, respectively (p < .01). Based on national recommendations, 40.9% of participants slept insufficiently, particularly young people (vs. adults, p < .01). In age-group stratified analysis, there were no significant associations of insufficient sleep or sleep duration with obesity, diabetes status, or insulin resistance after adjustment for age, race/ethnicity, and gender. In all, 42% of participants reported napping regularly (≥1/week), with adolescents significantly more likely to do so (vs. adults, odds ratio [OR] = 1.95, p < .01). Non-Hispanic Blacks and Hispanics also had higher odds of regular napping (vs. non-Hispanic Whites, OR = 3.74, p < .01 and OR = 2.52, p = .03, respectively). In adjusted analysis, leaner (vs. obese) adolescents, whether measured by body mass index, percentage body fat, or waist circumference, were significantly more likely to nap regularly.

CONCLUSIONS

We found that insufficient sleep was significantly more likely in children and adolescents compared with adults in families with type 1 diabetes. Lower adiposity was associated with regular napping in adolescents. The high prevalence of insufficient sleep in young patients with type 1 diabetes and their relatives detected in the current study may have significant health consequences.

Development of a safety net medical home scale for clinics

BACKGROUND

Existing tools to measure patient-centered medical home (PCMH) adoption are not designed for research evaluation in safety-net clinics.

OBJECTIVE

Develop a scale to measure PCMH adoption in safety-net clinics.

RESEARCH DESIGN

Cross-sectional survey.

SUBJECTS

Sixty-five clinics in five states.

MAIN MEASURES

Fifty-two-item Safety Net Medical Home Scale (SNMHS). The total score ranges from 0 (worst) to 100 (best) and is an average of multiple subscales (0-100): Access and Communication, Patient Tracking and Registry, Care Management, Test and Referral Tracking, Quality Improvement, and External Coordination. The scale was tested for internal consistency reliability and tested for convergent validity using The Assessment of Chronic Illness Care (ACIC) and the Patient-Centered Medical Home Assessment (PCMH-A). The scale was applied to centers in the sample. In addition, linear regression models were used to measure the association between clinic characteristics and medical home adoption.

RESULTS

The SNMHS had high internal consistency reliability (Cronbach's alpha = 0.84). The SNMHS score correlated moderately with the ACIC score (r = 0.64, p < 0.0001) and the PCMH-A (r = 0.56, p < 0.001). The mean SNMHS score was 61 ± SD 13. Among the subscales, External Coordination (66 ± 16) and Access and Communication (65 ± 14) had the highest mean scores, while Quality Improvement (55 ± 17) and Care Management (55 ± 16) had lower mean scores. Clinic characteristics positively associated with total SNMHS score were having more providers (β 15.8 95% CI 8.1-23.4 >8 provider FTEs compared to <4 FTEs) and participation in financial incentive programs (β 8.4 95% 1.6-15.3).

CONCLUSION

The SNMHS demonstrated reliability and convergent validity for measuring PCMH adoption in safety-net clinics. Some clinics have significant PCMH adoption. However, room for improvement exists in most domains, especially for clinics with fewer providers.

Implications of the new definition of diabetes for health disparities

In July 2009, an international committee announced a new diagnostic criterion for diabetes based on hemoglobin Alc (HbA1c) values. Our objective was to estimate how the new diabetes diagnostic criterion will affect the prevalence of diabetes among different race, age, and gender subpopulations, compared to the previously used fasting plasma glucose (FPG) criterion. We analyzed nationally representative data from The National Health and Nutrition Examination Survey (NHANES), aggregated from 1999 to 2006. We estimated the prevalence of known diabetes (prevalence static across either diagnostic criterion), unknown, and no diabetes (prevalence variable by criterion). We tested statistical significance of prevalence differences for unknown diabetes between the prior diagnostic criterion--FPG of at least 126 mg/dL--and the new diagnostic criterion--HbA1c of at least 6.5%--using conditional logistic regression. We further tested the association of these differences with demographic factors. The new HbA1c diagnostic criterion differentially affects different racial/ethnic groups. For non-Hispanic whites, the prevalence of undiagnosed diabetes was more than halved from 2.6% (95% confidence interval [CI], 2.2-3.1) with FPG diagnosis to 1.3% (95% CI, 1.0-1.7), P<.001 with HbAic diagnosis. For Hispanics and non-Hispanic blacks, the differences in prevalence by the 2 criteria were smaller and nonsignificant. Racial differences by diagnostic criteria were most pronounced among people aged over 55 years. Overall, the new definition of diabetes differentially affects ethnic groups, especially for older people. If the new criterion is widely adopted, over time, we may see an apparent widening of racial/ethnic disparities in diabetes prevalence.

Small and medium-size physician practices use few patient-centered medical home processes

The patient-centered medical home has become a prominent model for reforming the way health care is delivered to patients. The model offers a robust system of primary care combined with practice innovations and new payment methods. But scant information exists about the extent to which typical US physician practices have implemented this model and its processes of care, or about the factors associated with implementation. In this article we provide the first national data on the use of medical home processes such as chronic disease registries, nurse care managers, and systems to incorporate patient feedback, among 1,344 small and medium-size physician practices. We found that on average, practices used just one-fifth of the patient-centered medical home processes measured as part of this study. We also identify internal capabilities and external incentives associated with the greater use of medical home processes.

Onset features and subsequent clinical evolution of childhood diabetes over several years

AIM

To explore whether it is possible to predict a child's eventual diabetes phenotype using characteristics at initial presentation, we reassessed 111 young patients on average 7.8 ± 4.2 (2.2-19.7) [mean ± SD (range)] years after diagnosis.

METHODS

Medical records at diagnosis for 111 patients, aged 0-17, were compared with their follow-up characteristics including stimulated C-peptide (CP) and islet autoantibodies (AB).

RESULTS

Initially, 18 patients were obese; 9 displayed other type 2 diabetes (T2DM) features (polycystic ovary syndrome, acanthosis, diagnosed T2DM); the remaining 84 had a classic type 1 diabetes (T1DM) presentation. At follow-up, 83 patients (75%) with no measured CP were classified as T1DM; 17 (15%) were CP+ and AB- and thus considered T2DM. Eleven patients with both T1DM and T2DM features were classified as having mixed diabetes phenotype (MDM). One-fifth (22 subjects) changed presumed phenotype at follow-up. In multivariable models, T1DM patients were younger at diagnosis, had higher initial glucose values, were more likely to have experienced ketoacidosis, and less likely to be obese or of African American ethnicity.

CONCLUSIONS/INTERPRETATION

Ten percent of subjects had MDM and 15% had T2DM at ∼8 years' duration. Although no onset feature was completely reliable, ketoacidosis and hyperglycemia were more likely to predict T1DM; obesity and African American ethnicity made T2DM more likely. At diagnosis, features of T2DM in addition to obesity were strongly predictive of eventual T2DM phenotype. Given the significant percentage who changed or had mixed phenotype, careful tracking of all young people with diabetes is essential to correctly determine eventual disease type.

Sexuality among middle-aged and older adults with diagnosed and undiagnosed diabetes: a national, population-based study

OBJECTIVE

To describe sexual activity, behavior, and problems among middle-age and older adults by diabetes status.

RESEARCH DESIGN AND METHODS

This was a substudy of 1,993 community-residing adults, aged 57-85 years, from a cross-sectional, nationally representative sample (N = 3,005). In-home interviews, observed medications, and A1C were used to stratify by diagnosed diabetes, undiagnosed diabetes, or no diabetes. Logistic regression was used to model associations between diabetes conditions and sexual characteristics, separately by gender.

RESULTS

The survey response rate was 75.5%. More than 60% of partnered individuals with diagnosed diabetes were sexually active. Women with diagnosed diabetes were less likely than men with diagnosed diabetes (adjusted odds ratio 0.28 [95% CI 0.16-0.49]) and other women (0.63 [0.45-0.87]) to be sexually active. Partnered sexual behaviors did not differ by gender or diabetes status. The prevalence of orgasm problems was similarly elevated among men with diagnosed and undiagnosed diabetes compared with that for other men, but erectile difficulties were elevated only among men with diagnosed diabetes (2.51 [1.53 to 4.14]). Women with undiagnosed diabetes were less likely to have discussed sex with a physician (11%) than women with diagnosed diabetes (19%) and men with undiagnosed (28%) or diagnosed (47%) diabetes.

CONCLUSIONS

Many middle-age and older adults with diabetes are sexually active and engage in sexual behaviors similarly to individuals without diabetes. Women with diabetes were more likely than men to cease all sexual activity. Older women with diabetes are as likely to have sexual problems but are significantly less likely than men to discuss them.

Racial and ethnic differences in an estimated measure of insulin resistance among individuals with type 1 diabetes

OBJECTIVE Insulin resistance is greater in racial/ethnic minorities than in non-Hispanic whites (NHWs) for those with and without type 2 diabetes. Because previous research on insulin resistance in type 1 diabetes was limited to NHWs, racial/ethnic variation in an estimated measure of insulin resistance in type 1 diabetes was determined. RESEARCH DESIGN AND METHODS The sample included 79 individuals with type 1 diabetes diagnosed at age <18 years (32.9% NHWs, 46.8% non-Hispanic black [NHB], 7.6% other/mixed, and 12.7% Hispanic) and their families. Estimated glucose disposal rate (eGDR) (milligrams per kilogram per minute; a lower eGDR indicates greater insulin resistance) was calculated using A1C, waist circumference, and hypertension status. RESULTS Mean current age was 13.5 years (range 3.2-32.5) and diabetes duration was 5.7 years (0.1-19.9). eGDR was inversely associated with age. Compared with that in NHWs, age-adjusted eGDR was significantly lower among nonwhites (NHB, other/mixed, and Hispanic: Delta = -1.83, P = 0.0006). Age-adjusted eGDR was negatively associated with body fat, triglycerides, urinary albumin/creatinine, acanthosis nigricans, parental obesity, and parental insulin resistance and positively related to HDL and sex hormone-binding globulin. In multivariable analysis, lower eGDR was significantly associated with older age, nonwhite race/ethnicity, acanthosis, and lower HDL. CONCLUSIONS Minorities with type 1 diabetes are significantly more insulin resistant, as measured by eGDR, than NHWs. Exploring potential mechanisms, including disparities in care and/or physiological variation, may contribute to preventing racial/ethnic differences in insulin resistance-associated outcomes.

Hospitalization subsequent to diagnosis in young patients with diabetes in Chicago, Illinois

OBJECTIVES

Rehospitalization after a diabetes diagnosis in youth signals the failure of outpatient management. We examined risk factors for rehospitalization among young patients with diabetes.

PATIENTS AND METHODS

We queried 535 participants diagnosed before 18 years of age from the Chicago Childhood Diabetes Registry. Demographic, social, and clinical data were used in logistic models of diabetes-related rehospitalization, as well as, among those rehospitalized, frequent (> or = once per 2 years' duration) versus infrequent rehospitalization rates.

RESULTS

Mean (range) duration was 5.1 years (0.1-19.2 years). The sample was 55% non-Hispanic black, 11% non-Hispanic white, 26% Hispanic, and 7% other/mixed race; 86% had presumed type 1 diabetes; and 47% were underinsured. Overall, 46% reported rehospitalization for diabetes. In multivariable logistic regression, ever being rehospitalized was significantly associated with diabetes duration (per year, odds ratio [OR]: 1.26; P < .01), female gender (OR: 1.67; P = .01), underinsurance (versus private insurance; OR: 1.79; P < .01), presumed phenotype (non-type 1 diabetes versus type 1; OR: 0.32; P < .01), and diagnosis at a community hospital (versus tertiary care facility; OR: 1.96; P < .01) and tended to be higher for those of nonwhite race (OR: 1.94; P = .07). Among those rehospitalized, multivariable associations with frequent rehospitalization were presumed phenotype (non-type 1 diabetes versus type 1; OR: 2.74; P = .04), head of household not working (versus employed; OR: 1.88; P = .02), and younger age at questionnaire (per year; OR: 0.94; P = .01).

CONCLUSIONS

Rehospitalization is common in young patients with diabetes, especially for those with limited resources, indicating the need for improved outpatient services. Comprehensive initial education and support available to young patients with diabetes diagnosed at tertiary care facilities and their families may have lasting protective effects.

Assessment of smoking behaviors and alcohol use in the national social life, health, and aging project

OBJECTIVES

The National Social Life, Health, and Aging Project (NSHAP) assessed smoking behaviors and alcohol use as factors directly related to physical health, well-being, and social relationships. We describe self-report measures of tobacco and alcohol use, as well as an established biological marker of tobacco exposure, cotinine, collected in Wave 1 of NSHAP.

METHODS

We compare smoking behaviors and alcohol use by gender and age group. We report on derived measures of alcohol consumption and tobacco exposure widely used in medical and substance use literature, compare current and past users, and describe associations between self-reported smoking status and cotinine.

RESULTS

Men are more likely than women to report alcohol use, potential problem drinking, and ever smoking. Alcohol use and smoking are lower among older age groups. Although current smoking is less prevalent than in the general U.S. adult population, 50% of current and 29% of past smokers have lifetime exposure of 40 pack-years or more. Cotinine is directly related to number of cigarettes per day but with considerable unexplained variation. Cotinine levels contradict self-report in fewer than 4% of nonsmokers.

CONCLUSION

NSHAP provides data useful for investigation of smoking and alcohol use and their association with health and social factors.

Thelarche, pubarche, and menarche attainment in children with normal and elevated body mass index

BACKGROUND

The early onset of puberty may be related to obesity, so there is a need to know the prevalence of early pubertal milestones in nonoverweight children. OBJECTIVE. We compared attainment of stage 2 breasts, stage 3 (sexual) pubic hair, and menarche in the Third National Health and Nutrition Examination Survey sample of children with normal BMI with those with excessive BMI (> or =85th percentile).

DESIGN/METHODS

The ages at which 5%, 50%, and 95% of youth had attained key pubertal stages were estimated by probit models. Logit models were then fit to compare attainment of these milestones in children of excessive and normal BMI.

RESULTS

Pubertal signs occurred before 8.0 years of age in <5% of the normal-BMI general and non-Hispanic white female population. However, pubertal milestones generally appeared earlier in normal-BMI non-Hispanic black and Mexican American girls; thelarche occurred before age 8.0 in 12% to 19% of these groups, and the 5th percentile for menarche was 0.8 years earlier for non-Hispanic black than non-Hispanic white subjects. Pubarche was found in < or =3% of 8.0-year-old girls with normal BMI of all of these ethnic groups but was significantly earlier in minority groups. Pubarche appeared before 10.0 years in <2% of normal-BMI boys. Girls with excessive BMI had a significantly higher prevalence of breast appearance from ages 8.0 through 9.6 years and pubarche from ages 8.0 through 10.2 years than those with normal BMI. Menarche was also significantly more likely to occur in preteen girls with an elevated BMI.

CONCLUSIONS

Prevalence estimates are given for the key pubertal milestones in children with normal BMI. Breast and sexual pubic hair development are premature before 8 years of age in girls with normal BMI in the general population. Adiposity and non-Hispanic black and Mexican American ethnicity are independently associated with earlier pubertal development in girls.

Prevalence of high-risk human papillomavirus among older women

OBJECTIVE

To estimate the prevalence, genotypes, and individual-level correlates of high-risk human papillomavirus (HPV) among women aged 57-85.

METHODS

Community-residing women (N=1,550), aged 57-85, were drawn from a nationally representative probability sample. In-home interviews and biomeasures, including a self-collected vaginal specimen, were obtained between 2005 and 2006. Specimens were analyzed for high-risk HPV DNA using Hybrid Capture 2; of 1,028 specimens provided, 1,010 were adequate for analysis. All samples testing positive were analyzed for HPV DNA by L1 consensus polymerase chain reaction followed by type-specific hybridization.

RESULTS

The overall population-based weighted estimate of high-risk HPV prevalence by Hybrid Capture 2 (Digene Corp.) was 6.0% (95% confidence interval 4.5- 7.9). Current marital and smoking status, frequency of sexual activity, history of cancer, and hysterectomy were associated with high-risk HPV positivity. Among high-risk HPV-positive women, 63% had multiple type infections. Human papillomavirus-16 or -18 was present in 17.4% of all high-risk HPV-positive women. The most common high-risk genotypes among high-risk HPV-positive women were HPV-61 (19.1%), -31 (13.1%), -52 (12.9%), -58 (12.5%), -83 (12.3%), -66 (12.0%), -51 (11.7%), -45 (11.2%), -56 (10.3%), -53 (10.2%), -16 (9.7%), and -62 (9.2%). Being married and having an intact uterus were independently associated with lower prevalence of high-risk HPV. Among unmarried women, current sexual activity and smoking were independently and positively associated with high-risk HPV infection.

CONCLUSION

In this nationally representative population, nearly 1 in 16 women aged 57-85 was found to have high-risk HPV, and prevalence was stable across older age groups.

LEVEL OF EVIDENCE

II.

Insurance status and quality of diabetes care in community health centers

OBJECTIVES

We sought to compare quality of diabetes care by insurance type in federally funded community health centers. Method. We categorized 2018 diabetes patients, randomly selected from 27 community health centers in 17 states in 2002, into 6 mutually exclusive insurance groups. We used multivariate logistic regression analyses to compare quality of diabetes care according to 6 National Committee for Quality Assurance Health Plan Employer Data and Information Set diabetes processes of care and outcome measures.

RESULTS

Thirty-three percent of patients had no health insurance, 24% had Medicare only, 15% had Medicaid only, 7% had both Medicare and Medicaid, 14% had private insurance, and 7% had another insurance type. Those without insurance were the least likely to meet the quality-of-care measures; those with Medicaid had a quality of care similar to those with no insurance.

CONCLUSIONS

Research is needed to identify the major mediators of differences in quality of care by insurance status among safety-net providers such as community health centers. Such research is needed for policy interventions at Medicaid benefit design and as an incentive to improve quality of care.

Sex hormone-binding globulin and testosterone in individuals with childhood diabetes

OBJECTIVE

Insulin downregulates hepatic production of sex hormone-binding globulin (SHBG), which in turn influences sex hormone bioavailability. The effects of childhood-onset diabetes and insulin resistance in nondiabetic individuals on SHBG and testosterone in children and young adults are poorly understood.

RESEARCH DESIGN AND METHODS

Individuals with diabetes diagnosed at <18 years of age (n = 48) and their siblings without diabetes (n = 47) were recruited for the Chicago Childhood Diabetes Registry Family Study. SHBG and total and free testosterone were measured. Participants ranged in age from 10 to 32 years; 39% were non-Hispanic white. The majority of individuals with diabetes had the classic type 1 phenotype (75%), while the remainder exhibited features of type 2 or mixed diabetes; 96% were treated with insulin.

RESULTS

SHBG and total testosterone were higher in male subjects with diabetes compared with those in male siblings. Elevated SHBG was associated with the absence of endogenous insulin independent of sex; elevated total testosterone was similarly associated with the absence of C-peptide for male subjects only. Diabetes type and treatment were unrelated. In those without diabetes, greater insulin resistance had a small, nonsignificant association with lower SHBG and higher free testosterone.

CONCLUSIONS

SHBG and total testosterone appear to be higher in male children and young adults with diabetes compared with nondiabetic male siblings, which is apparently related to the absence of endogenous insulin. This may have implications for sex hormone-dependent processes across the lifespan in male individuals diagnosed with diabetes as children.

Variation in treatment preferences and care goals among older patients with diabetes and their physicians

BACKGROUND

Older persons with diabetes are heterogeneous with respect to life expectancy and frailty, and new guidelines recommend individualizing care.

OBJECTIVES

(1) To describe variation in the preferences of older patients with diabetes regarding aggressiveness of glycemic control and avoiding diabetic complications. (2) To determine correlates of patient preferences and physician treatment goals. (3) To assess whether physicians' goals were consistent with their patients' preferences.

RESEARCH DESIGN

Cross-sectional surveys and chart reviews in urban academic clinics.

SUBJECTS

: Four hundred seventy-three patients with diabetes age 65 or older and 64 physicians.

MEASURES

Patient preferences (utilities on a scale from 0 to 1, 0 = death, 1 = perfect health) for diabetic complications and intensity of treatment, and physician target treatment goals and ratings of aggressiveness of approach.

RESULTS

Eighty percent of the patients were African American, 63% were women, average age was 73.7 +/- 5.9 years and 26% expected to live 5 years or less. Patient preferences/utilities showed significant variation: blindness 0.39 (SD, 0.32), lower leg amputation 0.45 (0.34), conventional treatment 0.76 (0.27), and intensive insulin treatment 0.64 (0.32). Physicians' hemoglobin A1c goal was < or =7% in 69% of patients. Greater estimated patient life expectancy was consistently associated with higher patient utilities and was associated with physicians' willingness to use aggressive treatments. Physicians' treatment goals and approaches were associated with patients' utilities for treatment.

CONCLUSIONS

Older patients vary greatly in their preferences regarding diabetic complications and treatments. Acknowledging patient preferences, along with life goals and prognostic data, may improve quality of treatment decisions.

Predicting changes in staff morale and burnout at community health centers participating in the health disparities collaboratives

OBJECTIVE

To identify predictors of changes in staff morale and burnout associated with participation in a quality improvement (QI) initiative at community health centers (HCs).

DATA SOURCES

Surveys of staff at 145 HCs participating in the Health Disparities Collaboratives (HDC) program in 2004. DATA COLLECTION AND STUDY DESIGN: Self-administered questionnaire data collected from 622 HC staff (68 percent response rate) were analyzed to identify predictors of reported change in staff morale and burnout. Predictive categories included outcomes of the QI initiative, levels of HDC integration, institutional support, the use of incentives, and demographic characteristics of respondents and centers.

PRINCIPAL FINDINGS

Perceived improvements in staff morale and reduced likelihood of staff burnout were associated with receiving personal recognition, career promotion, and skill development opportunities. Similar outcomes were associated with sufficient funding and personnel, fair distribution of work, effective training of new hires, and consistent provider participation.

CONCLUSIONS

Having sufficient personnel available to administer the HDC was found to be the strongest predictor of team member satisfaction. However, a number of low-cost, reasonably modifiable, organizational and leadership characteristics were also identified, which may facilitate improvements in staff morale and reduce the likelihood of staff burnout at HCs participating in the HDC.

Hypertension and hyperlipidemia management in patients treated at community health centers

OBJECTIVE: Community health centers (HCs) provide care for millions of medically underserved Americans with disproportionate burdens of hypertension and hyperlipidemia. For both conditions, treatment guidelines recently became more stringent and quality improvement (QI) efforts have intensified. We assessed hypertension and hyperlipidemia management in HCs during this time of guideline revision and increased QI efforts. DESIGN: Cross-sectional chart review. SETTING AND PARTICIPANTS: Eleven Midwestern HCs for 2000 and 9 for 2002 provided audit data from 2,976 randomly chosen patients with hypertension and/or hyperlipidemia. MEASUREMENT: Joint National Committee on Prevention, Detection, Evaluation and Treatment of High Blood Pressure (JNC VI/VII) and National Cholesterol Education Program Adult Treatment Panel (NCEP-ATP III) guidelines were used to assess management of these conditions. RESULTS: Hypertension (2000, N=808; 2002, N=692) and hyperlipidemia (2000, N=774; 2002, N=702) outcomes improved for specific clinical subgroups. Hypertensive patients with 1 or more cardiovascular risk factors demonstrated significant improvement (34% vs. 45% controlled at <140/90 mm Hg, p=0.02). Hypertension control for persons with diabetes, renal failure and heart failure increased (16% vs. 28% controlled at <130/85 mm Hg, p=0.006). LDL control increased significantly for patients with 2 or more risk factors (39% vs. 58% controlled at <130 mg/dl, p=0.008). Other clinical subgroups showed trends toward better control, although there was insufficient power to detect significant differences for these groups. CONCLUSION: Hypertension and hyperlipidemia outcomes improved for some risk groups; however, ongoing QI is necessary.

The cost-effectiveness of improving diabetes care in U.S. federally qualified community health centers

OBJECTIVE

To estimate the incremental cost-effectiveness of improving diabetes care with the Health Disparities Collaborative (HDC), a national collaborative quality improvement (QI) program conducted in community health centers (HCs).

DATA SOURCES/STUDY SETTING

Data regarding the impact of the Diabetes HDC program came from a serial cross-sectional follow-up study (1998, 2000, 2002) of the program in 17 Midwestern HCs. Data inputs for the simulation model of diabetes came from the latest clinical trials and epidemiological studies.

STUDY DESIGN

We conducted a societal cost-effectiveness analysis, incorporating data from QI program evaluation into a Monte Carlo simulation model of diabetes.

DATA COLLECTION/EXTRACTION METHODS

Data on diabetes care processes and risk factor levels were extracted from medical charts of randomly selected patients.

PRINCIPAL FINDINGS

From 1998 to 2002, multiple processes of care (e.g., glycosylated hemoglobin testing [HbA1C] [71-->92 percent] and ACE inhibitor prescribing [33-->55 percent]) and risk factor levels (e.g., 1998 mean HbA1C 8.53 percent, mean difference 0.45 percent [95 percent confidence intervals -0.72, -0.17]) improved significantly. With these improvements, the HDC was estimated to reduce the lifetime incidence of blindness (17-->15 percent), end-stage renal disease (18-->15 percent), and coronary artery disease (28-->24 percent). The average improvement in quality-adjusted life year (QALY) was 0.35 and the incremental cost-effectiveness ratio was $33,386/QALY.

CONCLUSIONS

During the first 4 years of the HDC, multiple improvements in diabetes care were observed. If these improvements are maintained or enhanced over the lifetime of patients, the HDC program will be cost-effective for society based on traditionally accepted thresholds.

Provider perceptions of limited health literacy in community health centers

OBJECTIVE

To examine techniques used by community health center (HC) providers to care for patients with limited health literacy (LHL).

METHODS

Survey mailed to 803 HC providers in 10 Midwestern states. Response rate was 47.5%. Associations between variables were examined using generalized estimating equations (GEE) models to account for clustering of respondents within HCs.

RESULTS

The average provider estimates of LHL prevalence among English- and Spanish-speaking patients were 41+/-24% (mean+/-S.D.) and 48+/-30%, respectively. Those with training in health literacy were more likely to have patients repeat instructions back to check understanding (OR=2.05 and p=0.04) and were more likely to give out health education materials designed for patients with LHL (OR=2.80 and p=0.0002). Providers differed by type in encouraging patients to bring friends or family members to appointments (p=0.02).

CONCLUSION

Providers estimate LHL to be highly prevalent in their HCs, and use various techniques to assist patients.

PRACTICE IMPLICATIONS

Training in health literacy is associated with increased usage of evidence-based techniques to assist patients with LHL. Providers at all levels would likely benefit from LHL training. Most providers believe providing health education materials designed specifically for patients with LHL would be very helpful.

Risk factors for mortality in a diverse cohort of patients with childhood-onset diabetes in Chicago

OBJECTIVE

We sought to determine whether risk of death differed by demographic or other characteristics in a population-based cohort of patients with childhood-onset diabetes.

RESEARCH DESIGN AND METHODS

The Chicago Childhood Diabetes Registry is an ethnically diverse cohort of patients with diabetes onset between ages 0 and 17 years. Cases that accumulated from 1 January 1985 to 31 December 2000 (n = 1,238) were assessed for vital status using death certificates, family reports, and two large administrative databases (Social Security Death Index and National Death Index). Mortality was compared between subgroups using Poisson and Cox proportional hazards regression.

RESULTS

Thirty subjects died, with a mean follow-up time of 7.75 years, yielding a crude case fatality rate of 2.4%. Six subjects died of diabetic ketoacidosis (DKA) at initial presentation. Onset age was the predominant risk factor, driven by a substantially higher fatality rate among those diagnosed at age 17 years (13.36/1,000 person-years) than among other ages and by moderately higher rates for those diagnosed in early adolescence (ages 10-13 years) (3.49/1,000 person-years), compared with children diagnosed before age 10 years (0.89/1,000 person-years) or at ages 14-16 years (0.81/1,000 person-years). Mortality did not differ significantly by other factors examined; data for whites were insufficient to allow comparisons with that group. In addition to diabetes, frequent causes of death were trauma, infectious disease, and cardiovascular disease.

CONCLUSIONS

This study provides short- to medium-term follow-up in a diverse cohort of patients. DKA remains a significant cause of death in young people with diabetes. Young people diagnosed at the threshold of adulthood are at increased risk for mortality.

Incidence of childhood type I and non-type 1 diabetes mellitus in a diverse population: the Chicago Childhood Diabetes Registry, 1994 to 2003

BACKGROUND

Reports of increasing risk for type 1 (T1) and type 2 diabetes mellitus in youth are emerging, but information on socioeconomically diverse populations is limited.

METHOD

The Chicago Childhood Diabetes Registry is a city-wide study of patients 0-17 years old at onset. Incidence data came from medical records and interviews; census data provided denominators; analyses used Poisson regression. Non-type 1 (nT1) patients had a type 2-like clinical course or related indicators.

RESULTS

There were 1,366 incident cases: 719 in non-Hispanic Black (NHB), 379 in Hispanic, 229 in non-Hispanic White (NHW), and 39 in children of other ethnicities. Average annual incidence was 16.0 (95% CI: 14.6, 17.6)/10(5) for boys, 20.1 (18.3, 22.1)/10(5) for girls, and 18.1 (16.9, 19.3)/10(5) overall. Risk was 21.6 (19.6, 23.8)/10(5) for NHB, 14.6 (13.0, 16.4)/10(5) for Hispanic, and 18.1 (15.9, 20.6)/10(5) for NHW. Children aged 10-14 years experienced the highest incidence, irrespective of ethnicity. T1 was predominant in all ethnic groups, except NHB, where the rates of T1 and nT1 were similar. Over ten years there was a marked increase in all childhood diabetes in Chicago, averaging 2.73% (95% CI: 0.49, 5.02) per annum, adjusted for age. This increase was confined to nT1, with an average annual percent change of +6.23% (2.28, 10.34), while T1 incidence remained stable.

CONCLUSIONS

Incidence of childhood diabetes increased between 1994-2003, driven primarily by nT1, suggesting a role for behavioral and/or environmental determinants of insulin resistance. These estimates are likely to be conservative, if nT1 cases were more apt to be missed.

Providers' Assessment of Barriers to Effective Management of Hypertension and Hyperlipidemia in Community Health Centers

We explored 251 providers' (47% licensed practical nurses, 27% registered nurses, 10% physicians, 10% physician assistants, 6% other) perceptions of barriers to effective management of hypertension and hyperlipidemia from 72 Midwest community health centers (CHCs). Optimal care for these diseases is difficult in any setting; little is known about the specific barriers CHCs face. Community health centers often have a multidisciplinary team that participates in patient care. Current models of quality improvement and chronic care management require virtually all CHC providers to know clinical guidelines. Providers in this study generally chose hypertension and hyperlipidemia target levels that met or were more stringent than national guidelines, but lacked confidence to address behavioral change and reported obstacles to modifying patient lifestyle. Community health centers should strengthen providers' skills in facilitating lifestyle change. Improving quality of care requires supporting providers' efforts to take patients' psychosocial and financial challenges into account, and revised policies to eliminate financial and cultural barriers to care.

Effect of inspiratory time on tidal volume delivery in anesthesia and intensive care unit ventilators operating in pressure control mode

STUDY OBJECTIVE

To compare the effect of inspiratory time and lung compliance on tidal volume (Vt) delivery in anesthesia and intensive care unit (ICU) ventilators operating in pressure control mode.

SETTING

Respiratory research laboratory of a tertiary care medical center.

DESIGN

Two anesthesia ventilators with pressure control capability (Narkomed 6000, Drager Medical, Inc, Telford, Pa, and the Datex-Ohmeda Aestiva 5, Datex-Ohmeda, Inc, Madison, Wis) and one critical care ventilator (Puritan Bennett 7200, Puritan-Bennett, Pleasanton, Calif) were studied under varying inspiratory time and lung compliance conditions using a mechanical lung model.

INTERVENTION

Each ventilator was set to pressure control mode at a fixed inspiratory/expiratory (I/E) ratio. The respiratory rate (RR) was varied between 6 and 28 breaths per minute. Lung compliance and inspiratory time settings were set to simulate clinical conditions known to affect anesthesia ventilator performance.

MEASUREMENTS

Inspiratory flow, Vts, and peak airway pressures were measured using the on-board monitor for each ventilator, and confirmed with the Bicore CP-100 pulmonary mechanics monitor (Bicore Monitoring Systems, Inc, Irvine, Calif). To assess differences in inspiratory flow between ventilators, airway pressures were continuously monitored during inspiration.

MAIN RESULTS

Increasing RRs caused delivered Vts to decrease for all ventilators. However, decreases in Vts were significantly larger for anesthesia than for ICU ventilators. At a lung compliance of 0.02 L/cm H(2)O and set Vt of 700 mL, Vt delivery for the Puritan Bennett 7200 ventilator remained at 88% of baseline, but decreased to 76% for the Aestiva 5 when RRs were increased from 6 to 28 breaths per minute (P < .0025). Airway pressure tracings demonstrated a slower increase in inspiratory airway pressure for the Aestiva 5 than for the other ventilators.

CONCLUSION

Differences in inspiratory flow delivery between ICU and anesthesia ventilators can cause differences in Vt delivery when the pressure control mode is used at high RRs. These differences can significantly impact the perioperative care of critically ill patients requiring ventilatory support.

Improving diabetes care in midwest community health centers with the health disparities collaborative

OBJECTIVE

To evaluate the Diabetes Health Disparities Collaborative, an initiative by the Bureau of Primary Health Care to reduce health disparities and improve the quality of diabetes care in community health centers.

RESEARCH DESIGN AND METHODS

One year before- after trial. Beginning in 1998, 19 Midwestern health centers undertook a diabetes quality improvement initiative based on a model including rapid Plan-Do-Study-Act cycles from the continuous quality improvement field; a Chronic Care Model emphasizing patient self-management, delivery system redesign, decision support, clinical information systems, leadership, health system organization, and community outreach; and collaborative learning sessions. We reviewed charts of 969 random adults for American Diabetes Association standards, surveyed 79 diabetes quality improvement team members, and performed qualitative interviews.

RESULTS

The performance of several key processes of care assessed by chart review increased, including rates of HbA(1c) measurement (80-90%; adjusted odds ratio 2.1, 95% CI 1.6-2.8), eye examination referral (36-47%; 1.6, 1.1-2.3), foot examination (40-64%; 2.7, 1.8-4.1), and lipid assessment (55-66%; 1.6, 1.1-2.3). Mean value of HbA(1c) tended to improve (8.5-8.3%; difference -0.2, 95% CI -0.4 to 0.03). Over 90% of survey respondents stated that the Diabetes Collaborative was worth the effort and was successful. Major challenges included needing more time and resources, initial difficulty developing computerized patient registries, team and staff turnover, and occasional need for more support by senior management.

CONCLUSIONS

The Health Disparities Collaborative improved diabetes care in health centers in 1 year.

Is there a long-term predictive value of intraoperative low-dose dobutamine echocardiography in patients who have coronary artery bypass graft surgery with cardiopulmonary bypass?

In patients with coronary artery disease, chronic regional left ventricular systolic dysfunction at rest may be caused by hibernating or by infarcted myocardium. Intraoperative low-dose dobutamine (LDD) echocardiography reliably predicts the immediate recovery of regional myocardial function after coronary artery bypass graft (CABG) surgery. We sought to determine whether intraoperative LDD echocardiography would also predict recovery of regional function after 1 yr. Twenty-five patients with coronary artery disease who underwent CABG surgery with intraoperative LDD echocardiography were evaluated 1 yr later with a follow-up transthoracic echocardiogram. The covariates of left ventricular ejection fraction, old myocardial infarction, and diabetes mellitus were considered in an analysis of regional wall motion (RWM). A 16-segment model and a 1-5-point scoring system were used to evaluate 350 myocardial segments. Multiple logistic regression analysis was performed to determine whether response to intraoperative LDD echocardiography (5 microg. kg(-1). min(-1)) predicted changes in regional function at 1 yr. A segment was defined as stunned if the RWM score obtained during LDD infusion deteriorated after cardiopulmonary bypass but recovered in the 1-yr follow-up echocardiogram. A response to intraoperative LDD predicted changes in regional function at 1 yr. The overall odds of improvement in regional function were 2.22 times greater (95% confidence interval = 1.29, 3.82; P = 0.0039) with a positive response to intraoperative LDD. The positive predictive value of intraoperative LDD echocardiography for improvement in myocardial function was 0.81 and the negative predictive value was 0.34. The predictive values did not vary with the examined covariates. Of segments with unexpected deterioration of RWM immediately after cardiopulmonary bypass, 87% recovered at the time of the 1-yr follow-up echocardiogram. Contractile reserve demonstrated by intraoperative LDD echocardiography predicts regional function at 1 yr; however, the test cannot predict which segment will not recover. Most of unexpected regional ventricular systolic dysfunction immediately after CABG surgery can be attributed to myocardial stunning.

IMPLICATIONS

In patients undergoing coronary artery bypass graft surgery, intraoperative low-dose dobutamine echocardiography has only limited value for the prediction of regional myocardial function at 1 yr. Small-dose dobutamine echocardiography predicts regional myocardial function at 1 yr when baseline regional wall motion abnormalities improve with dobutamine; however, the test cannot be used to predict which segment will not recover at 1 yr.

Re-hospitalization after diagnosis of diabetes varies by gender and socioeconomic status in urban African-American and Latino young people

PURPOSE

To examine risk factors for re-hospitalization after diagnosis of diabetes mellitus amongst urban minority children.

METHODS

Families of insulin-treated African-American and Latino patients aged < 18 yr at diagnosis (n = 216) were interviewed about sociodemographics and other characteristics, on average 5.9 yr after diagnosis.

RESULTS AND CONCLUSIONS

About 60% of respondents were re-hospitalized at least once for diabetes-related reasons (n = 128). Half of those questioned had Medicaid or no health insurance at all; 23% fit criteria for a non-autoimmune, type 2 diabetic phenotype. Those who avoided re-hospitalization were more likely to have been seen initially at a tertiary care facility, to have private health insurance, and to be males. They had, on average, 2 yr shorter duration of diabetes at the time of interview. Risk for re-hospitalization was not associated with age at diagnosis, ethnicity, diabetic phenotype, or source of care during the past year. In multivariate analysis, predictors of re-hospitalization were gender [odds ratio (OR) 1.98 for females vs. males (95% confidence interval (CI) = 1.05-3.72)], duration of diabetes [OR = 1.46 per yr (95% CI = 1.36-1.57)], initial ascertainment at a community hospital [OR = 5.44 vs. tertiary care facility (95% CI = 2.61-11.29)] and having Medicaid or no insurance [OR = 2.73 (95% CI = 1.42-5.24)], compared with those with another type of health insurance. There is a high risk of re-hospitalization after the initial diagnosis of diabetes among insulin-treated minority children, particularly the uninsured and those on Medicaid, in part related to duration of disease and where the initial treatment occurred.

Barriers to providing diabetes care in community health centers

OBJECTIVE

We aimed to identify barriers to improving care for individuals with diabetes in community health centers. These findings are important because many such patients, as in most other practice settings, receive care that does not meet evidence-based standards.

RESEARCH DESIGN AND METHODS

In 42 Midwestern health centers, we surveyed 389 health providers and administrators about the barriers they faced delivering diabetes care. We report on home blood glucose monitoring, HbA1c tests, dilated eye examinations, foot examinations, diet, and exercise, all of which are a subset of the larger clinical practice recommendations of the American Diabetes Association (ADA).

RESULTS

Among the 279 (72%) respondents, providers perceived that patients were significantly less likely than providers to believe that key processes of care were important (overall mean on 30-point scale: providers 26.8, patients 18.2, P = 0.0001). Providers were more confident in their ability to instruct patients on diet and exercise than on their ability to help them make changes in these areas. Ratings of the importance of access to care and finances as barriers varied widely; however, >25% of the providers and administrators agreed that significant barriers included affordability of home blood glucose monitoring, HbA1c testing, dilated eye examination, and special diets; nonproximity of ophthalmologist; forgetting to order eye examinations and to examine patients' feet; time required to teach home blood glucose monitoring; and language or cultural barriers.

CONCLUSIONS

Providers in health centers indicate a need to enhance behavioral change in diabetic patients. In addition, better health care delivery systems and reforms that improve the affordability, accessibility, and efficiency of care are also likely to help health centers meet ADA standards of care.

Sexual harassment and generalized workplace abuse among university employees: prevalence and mental health correlates

OBJECTIVES

This study hypothesized that interpersonal workplace stressors involving sexual harassment and generalized workplace abuse are highly prevalent and significantly linked with mental health outcomes including symptomatic distress, the use and abuse of alcohol, and other drug use.

METHODS

Employees in 4 university occupational groups (faculty, student, clerical, and service workers; n = 2492) were surveyed by means of a mailed self-report instrument. Cross-tabular and ordinary least squares and logistic regression analyses examined the prevalence of harassment and abuse and their association with mental health status.

RESULTS

The data show high rates of harassment and abuse. Among faculty, females were subjected to higher rates; among clerical and service workers, males were subjected to higher rates. Male and female clerical and service workers experienced higher levels of particularly severe mistreatment. Generalized abuse was more prevalent than harassment for all groups. Both harassment and abuse were significantly linked to most mental health outcomes for men and women.

CONCLUSIONS

Interpersonally abusive workplace dynamics constitute a significant public health problem that merits increased intervention and prevention strategies.

Bone-sparing effect of soy protein in ovarian hormone-deficient rats is related to its isoflavone content

Our previous studies showed that a soy-protein diet prevents ovariectomy-induced bone loss. The purpose of this study was to determine whether isoflavones in soy protein are responsible for this bone-protective effect. Forty-eight 95-d-old Sprague-Dawley rats were divided into 4 groups: sham-operated fed a casein-based diet (SHAM), ovariectomized fed a casein-based diet (OVX+CASEIN), ovariectomized fed soy protein with normal isoflavone content (OVX+SOY), and ovariectomized fed soy protein with reduced isoflavone content (OVX+SOY-). The OVX+SOY group had significantly greater femoral bone density (in g/cm3 bone vol) than the OVX+CASEIN group, whereas OVX+SOY- was similar to OVX+CASEIN (mean +/- SD; SHAM, 1.522 +/- 0.041; OVX+CASEIN, 1.449 +/- 0.044; OVX+SOY, 1.497 +/- 0.030; OVX+SOY-, 1.452 +/- 0.030). Ovariectomy resulted in greater bone turnover as indicated by higher serum alkaline phosphatase activity, serum insulin-like growth factor I and insulin-like growth factor binding protein 3 concentrations, and urinary hydroxyproline. These increases were not affected by soy with either normal or reduced isoflavone content. Similarly, histomorphometry revealed a greater bone formation rate with ovariectomy, and this was not altered by the soy diets. The findings of this study suggest that isoflavones in soy protein are responsible for its bone-sparing effects. Further studies to evaluate the mechanism of action of isoflavones on bone are warranted.

Role of soy protein with normal or reduced isoflavone content in reversing bone loss induced by ovarian hormone deficiency in rats

Soy protein, a rich source of isoflavones, fed immediately after an ovariectomy prevents bone loss in rats. Reports of the effectiveness of natural and synthetic isoflavones in preventing or treating osteoporosis led us to examine the effect of soy protein in reversing established bone loss. Seventy-two 95-d-old female Sprague-Dawley rats were assigned to 6 groups. The rats were either sham operated (SHAM; 2 groups) or ovariectomized (OVX; 4 groups) and then fed a casein-based, semipurified diet. Thirty-five days after surgery, 1 SHAM and 1 OVX group were killed to examine the occurrence of bone loss. Thereafter, the other SHAM and 1 OVX groups continued to receive the casein-based diet. Whereas the remaining 2 OVX groups received diets in which casein was replaced by soy protein with normal (OVX+SOY) or reduced (OVX+SOY-) isoflavone content for 65 days. The OVX control group had significantly lower femoral and fourth lumbar vertebral bone densities than the SHAM group. Femoral density of rats fed SOY or SOY- diets were not significantly different from SHAM or OVX controls. This suggests a slight reversal of cortical bone loss that may be partially due to higher femoral insulin-like growth factor I mRNA transcripts resulting from both the SOY and SOY- diets. The ovariectomy-induced increases in indexes of bone turnover were not ameliorated by either of the soy diets, suggesting that any positive effect of soy was achieved through enhanced bone formation rather than slowed bone resorption. Long-term consumption of soy or its isoflavones may be needed to produce small but continued increments in bone mass.