Katrin Hambarsoomians

Effects of Survey Mode, Patient Mix, and Nonresponse on CAHPS® Hospital Survey Scores

OBJECTIVE To evaluate the need for survey mode adjustments to hospital care evaluations by discharged inpatients and develop the appropriate adjustments. DATA SOURCE A total of 7,555 respondents from a 2006 national random sample of 45 hospitals who completed the CAHPS Hospital (HCAHPS [Hospital Consumer Assessments of Healthcare Providers and Systems]) Survey. STUDY DESIGN/DATA COLLECTION/EXTRACTION METHODS We estimated mode effects in linear models that predicted each HCAHPS outcome from hospital-fixed effects and patient-mix adjustors. PRINCIPAL FINDINGS Patients randomized to the telephone and active interactive voice response (IVR) modes provided more positive evaluations than patients randomized to mail and mixed (mail with telephone follow-up) modes, with some effects equivalent to more than 30 percentile points in hospital rankings. Mode effects are consistent across hospitals and are generally larger than total patient-mix effects. Patient-mix adjustment accounts for any nonresponse bias that could have been addressed through weighting. CONCLUSIONS Valid comparisons of hospital performance require that reported hospital scores be adjusted for survey mode and patient mix.

Trauma, Depression, Coping, and Mental Health Service Seeking Among Impoverished Women

The authors examined the relationship among trauma, coping, depression, and mental health service seeking in a probability sample of sheltered homeless and low-income housed women. Results highlight the diversity of trauma. In a longitudinal analysis, women who lived in shelters or experienced major violence had a twofold increase in their risk of depression over the 6-month follow-up. In a cross-sectional analysis, childhood sexual abuse, living in a shelter, physical violence, childhood physical abuse, and death or injury of a friend or relative predicted avoidant coping and symptoms of depression. Active coping and depression predicted mental health service seeking among traumatized women. Modifying coping strategies may ameliorate some of the negative impact of trauma and potentially enhance mental health service use among at-risk women.

Barriers to Mental Health Care Utilization for U.S. Cambodian Refugees

Asian Americans encounter barriers to mental health care, some of which are structural, whereas others may be cultural. Using data from a probability sample (N = 490) drawn from the largest Cambodian refugee community in the United States, the authors assessed the extent to which structural and cultural barriers were experienced. Surprisingly, a relatively small proportion endorsed commonly cited cultural barriers such as distrust of Western care (4%) and greater confidence in alternative care (5%), whereas most endorsed structural barriers such as high cost (80%) and language (66%). Among those with a probable diagnosis, a similar pattern was found. Findings suggest that structural, not culturally based, barriers are the most critical obstacles to care in this U.S. Cambodian refugee community.

Alcohol abuse and illegal drug use among Los Angeles County trauma patients: Prevalence and evaluation of single item screener

BACKGROUND The misuse of alcohol and illicit drugs is implicated with injury and repeat injury. Admission to a trauma center provides an opportunity to identify patients with substance use problems and initiate intervention and prevention strategies. To facilitate the identification of trauma patients with substance use problems, we studied alcohol abuse and illegal substance use patterns in a large cohort of urban trauma patients, identified correlates of alcohol abuse, and assessed the utility of a single item binge-drinking screener for identifying patients with past 12-month substance use problems. METHODS Between February 2004 and August 2006, 677 patients from four large trauma centers in Los Angeles County were interviewed. The sample was broadly representative of the entire Los Angeles County trauma center patient population. RESULTS Twenty-four percent of patients met criteria for alcohol abuse and 15% reported using an illegal drug other than marijuana in the past 12 months. Male gender, assaultive injury, peritrauma substance use, and history of binge drinking were prominent risk factors. A single item binge drinking screen correctly identified alcohol abuse status in 76% of all patients; the screen also performed moderately well in discriminating between those who had or had not used illegal drugs in the past 12 months, with sensitivity estimates reaching 0.79 and specificity estimates reaching 0.74. CONCLUSIONS A large proportion of urban trauma patients abuse alcohol and use illegal drugs. Distinct sociodemographic and substance use history may indicate underlying risky behaviors. Interventions and injury prevention programs need to address these causal behaviors to reduce injury morbidity and recidivism. In the busy trauma care setting, a one-item screener could be helpful in identifying patients who would benefit from more thorough assessment and possible brief intervention.

Rates and Correlates of Seeking Mental Health Services Among Cambodian Refugees

OBJECTIVES We assessed the rates and correlates of seeking mental health services among a probability sample of Cambodian refugees who needed such services. METHODS Interviewers conducted face-to-face interviews with a representative sample drawn from the largest US community of Cambodian refugees. The analytic sample included 339 persons who met past 12-month criteria for posttraumatic stress disorder, major depression disorder, or alcohol use disorder. Respondents described contact with service providers for psychological problems during the preceding 12 months. We examined bivariate and multivariate predictors of seeking services. RESULTS Respondents reported high rates of contact with both medical care providers (70%) and mental health care providers (46%). Seeking services from both types of providers was associated with lack of English-speaking proficiency, unemployment, 3 or fewer years of preimmigration education, and being retired or disabled. Women, individuals with health insurance, and persons receiving government assistance also were more likely to seek services. CONCLUSIONS Cambodian refugees with mental health problems had high rates of seeking service for psychological problems during the preceding 12 months. Research is needed to examine the effectiveness of services received by Cambodian refugees.

Mental Health Service Utilization After Physical Trauma: The Importance of Physician Referral

Background:Despite the availability of effective treatments for posttraumatic stress reactions after serious physical injuries, many sufferers do not use mental health services. Attempts to understand the factors that facilitate mental health service use have often focused on patient-related factors without assessing provider behavior. Objectives:To examine the relative influence of patient-related factors and physician referral on mental health service utilization among patients after a traumatic physical injury. Design:A fully structured interview was administered prospectively by trained lay persons to Los Angeles Country trauma center injury patients. A total of 677 patients completed an initial interview. Of those who completed an initial interview, 70% (n = 476) completed a 6-month follow-up interview and 68% (n = 462) completed a 12-month interview. Measures:We examined 3 classes of patient characteristics hypothesized to be related to mental health service use: need (eg, posttraumatic stress symptoms), predisposing factors (eg, gender), and enabling resources (eg, health insurance). Additionally, we looked at physician referral to mental health treatment as a provider behavior hypothesized to predict service use. Results:Age, posttraumatic stress disorder symptom severity, previous mental health treatment, and physician referral were all associated with mental health service use. Physician referral demonstrated the strongest relationship with mental health service utilization. While controlling for other factors, the odds of mental health service use were nearly 8 times higher for those respondents receiving a physician referral than for those without a referral. Conclusions:Findings highlight the importance of physician referral in facilitating access to mental health services for trauma injury survivors.

Do Medicaid and commercial CAHPS scores correlate within plans?: a New Jersey case study.

Background:The Consumer Assessment of Health Plans Study (CAHPS) health plan survey is currently administered to large independent samples of Medicaid beneficiaries and commercial enrollees for managed care organizations that serve both populations. There is interest in reducing survey administration costs and sample size requirements by sampling these 2 groups together for health plan comparisons. Plan managers may also be interested in understanding variability within plans. Objective:The objective of this study was to assess whether the within plan correlation of CAHPS scores for the 2 populations are sufficiently large to warrant inferences about one from the other, reducing the total sample sizes needed. Research Design:This study consisted of an observational cross-sectional study. Subjects:Subjects were 3939 Medicaid beneficiaries and 3027 commercial enrollees in 6 New Jersey managed care plans serving both populations. Measures:Outcomes are 4 global ratings and 6 report composites from the CAHPS 1.0 survey. Results:Medicaid beneficiaries reported poorer care than commercial beneficiaries for 6 composites, but none of the 4 global ratings. Controlling for these main effects, variability between commercial enrollees and Medicaid beneficiaries within plans exceeded variability by plans for commercial enrollees for 4 of the 10 measures (2 composites, 2 global ratings). Conclusions:Within-plan variability in evaluations of care by Medicaid and commercial health plan member evaluations is too great to permit meaningful inference about plan performance for one population from the other for many important outcomes; separate surveys should still be fielded.