29 research outputs found

    The Theory of Ideas in the Cratylus

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    Testing the interval-level measurement property of multi-item visual analogue scales.

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    Item does not contain fulltextBACKGROUND: Conditions were studied that may invalidate health-state values derived from the visual analogue scale (VAS). METHODS: Respondents were asked to place cards with descriptions of EQ-5D health states on a 20 cm EuroQol VAS and modified versions of it, positioning them such that the distances between the states reflect their valuation for these states. Anchor-point bias was examined using the standard EuroQol VAS (n = 212) and a modified version (n = 97) with a different lower anchor. Context bias was examined in another group of respondents (n = 112) who valued three different sets of EQ-5D health states. Marker bias was studied in yet another group of respondents (n = 100) who placed the same EQ-5D states on the standard EuroQol VAS and on a modified VAS without anchors, categories, or measurement markers. RESULTS: No indication for the existence of the anchor-point and the marker bias was found. However, the VAS valuations were significantly affected by the context of the set of health states in the scaling task. CONCLUSION: Advanced methodologies should be incorporated in VAS valuation studies to deal with the context bias

    Rural and Urban Differences in Welfare Exits: Minnesota Evidence 1986-1996

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    This article examines differences between rural and urban counties in the duration of welfare spells. We report evidence that suggests that parents from farming-dependent counties and rural counties are more likely to have shorter spells on welfare. The evidence appears consistent with the literature on rural low-income families in that there may be a concentration of low-wage jobs in rural counties. The difference between rural and urban areas is relevant to welfare policy as it pertains to caseload numbers, parents more likely to reach the sixty-month time limit, and parents more likely to trigger time-based policies, such as employment search. The study uses administrative data of Aid to Families With Dependent Children recipients from the state of Minnesota between 1986 and 1996. The methodology includes constructing descriptive statistics, calculating Kaplan-Meier estimates, and performing a Cox regression analysis with robustness checks across all three methods. Copyright 2005 Blackwell Publishing Ltd..
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