Longitudinal nonresponse in the Current Population Survey (CPS)

Es wurde eine Datenbank mit Längsschnittdaten aufgebaut, die aus sieben vollständigen "Kohorten" bestand, von denen jede über eine Periode von fast zwei Jahren in allen acht Monaten in der CPS-Stichprobe war. Verglichen wurden Fälle vollständiger und teilweiser Beantwortung. Haushalte mit vollständiger Beantwortung lagen eher in ländlichen Gebieten, nicht im Westen der USA, umfassten mehr Personen und wurden von den Hauseigentümern selbst bewohnt. Mitglieder dieser Haushalte waren eher verheiratet, Kinder, Weiße, nicht spanischstämmig, über 65 Jahre alt und beantworteten mit höherer Wahrscheinlichkeit eine Frage nach dem Familieneinkommen. Personen in Haushalten mit teilweiser Beantwortung wiesen in den ersten vier Stichprobenmonaten (MIS) ein höheres Beschäftigungsniveau und in MIS 1 eine höhere Arbeitslosenquote auf als Personen in Haushalten mit vollständiger Beantwortung. (ICEÜbers)"A longitudinal database was created consisting of seven complete 'cohorts' who were in the CPS sample all eight months over nearly a 2 year period. Comparisons were made among complete respondents and partial respondents. Households that were complete respondents were relatively more likely than households that were partial respondents to be located in rural areas and in any region of the country except the west, and to have more persons living there, and to be occupied by owners. Members of complete respondent households were relatively more likely than members of partial respondent households to be a married couple, children, white, non-Hispanic, over 65 years of age, and were relatively more likely to answer a question an total family income. Persons in partial respondent households had a higher level of employment in the first four months-in-sample (MIS) and a higher unemployment rate in MIS 1 than persons in complete respondent households." (author's abstract

The impact of nonresponse on the unemployment rate in the Current Population Survey (CPS)

Gegenstand der Untersuchung sind CPS-Daten für alle Monate zwischen Januar 1994 und Juni 1997. Dabei wurden auch Antwortverweigerung und -ausfälle untersucht, um den Wechsel von Personen von der Nicht-Beteiligung zur Beteiligung am CPS und die Auswirkungen auf die Schätzung des Erwerbspersonenpotenzials zu untersuchen. Personen, die sich in einem Monat nicht am CPS beteiligten, wiesen höhere Quoten bei Arbeitslosigkeit, Erwerbsbeteiligung und Beschäftigung auf als Befragte, die sich in zwei aufeinander folgenden Monaten an der Umfrage beteiligten. Es traten auch - wenn auch in geringem Umfang - signifikante positive Korrelationen zwischen den Unterschieden in den Arbeitslosenquoten und der Antwortverweigerung insgesamt im Rahmen des CPS zu Tage. Zudem wurden Unterschiede hinsichtlich bestimmter Merkmale der Erwerbstätigkeit zwischen Antwortverweigerern und Nichtangetroffenen sichtbar. (ICEÜbers)"In the present research authors matched CPS data from all consecutive months from January, 1994 to June, 1997 and conducted an analysis similar to a gross flows analysis that included nonrespondents to examine the 'flow' of persons from respondent to nonrespondent status in the CPS and the resulting effect an labor force estimates. Persons who were nonrespondents to the CPS one month had higher rates of unemployment, labor force participation, and employment than those who were respondents both months. There were also moderate, but significant positive correlations between the differences an unemployment rates and the overall level of nonresponse in the CPS. There were also some differences in labor force characteristics between refusals and noncontacts." (author's abstract

Randomized controlled trial of a coordinated care intervention to improve risk factor control after stroke or transient ischemic attack in the safety net: Secondary stroke prevention by Uniting Community and Chronic care model teams Early to End Disparities (SUCCEED)

BACKGROUND: Recurrent strokes are preventable through awareness and control of risk factors such as hypertension, and through lifestyle changes such as healthier diets, greater physical activity, and smoking cessation. However, vascular risk factor control is frequently poor among stroke survivors, particularly among socio-economically disadvantaged blacks, Latinos and other people of color. The Chronic Care Model (CCM) is an effective framework for multi-component interventions aimed at improving care processes and outcomes for individuals with chronic disease. In addition, community health workers (CHWs) have played an integral role in reducing health disparities; however, their effectiveness in reducing vascular risk among stroke survivors remains unknown. Our objectives are to develop, test, and assess the economic value of a CCM-based intervention using an Advanced Practice Clinician (APC)-CHW team to improve risk factor control after stroke in an under-resourced, racially/ethnically diverse population. METHODS/DESIGN: In this single-blind randomized controlled trial, 516 adults (≥40 years) with an ischemic stroke, transient ischemic attack or intracerebral hemorrhage within the prior 90 days are being enrolled at five sites within the Los Angeles County safety-net setting and randomized 1:1 to intervention vs usual care. Participants are excluded if they do not speak English, Spanish, Cantonese, Mandarin, or Korean or if they are unable to consent. The intervention includes a minimum of three clinic visits in the healthcare setting, three home visits, and Chronic Disease Self-Management Program group workshops in community venues. The primary outcome is blood pressure (BP) control (systolic BP <130 mmHg) at 1 year. Secondary outcomes include: (1) mean change in systolic BP; (2) control of other vascular risk factors including lipids and hemoglobin A1c, (3) inflammation (C reactive protein [CRP]), (4) medication adherence, (5) lifestyle factors (smoking, diet, and physical activity), (6) estimated relative reduction in risk for recurrent stroke or myocardial infarction (MI), and (7) cost-effectiveness of the intervention versus usual care. DISCUSSION: If this multi-component interdisciplinary intervention is shown to be effective in improving risk factor control after stroke, it may serve as a model that can be used internationally to reduce race/ethnic and socioeconomic disparities in stroke in resource-constrained settings. TRIAL REGISTRATION: ClinicalTrials.gov Identifier NCT01763203