Effects of Changing Modes on Item Nonresponse in Panel Surveys

the effects of changing roughness on the flow structure in the bends

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

Comparison of Item and Unit Nonresponse in Household Surveys

1. Introduction Survey quality is thought to be impacted by nonresponse, both item nonresponse and survey or unit nonresponse. The relationship between item nonresponse and unit nonresponse has been studied by Dixon (2002). Dahlhamer et al. (2003) also studied item nonresponse across several federal surveys. The current study examines the nature of item nonresponse and the relationship with sub...

Tests of Certain Types of Ignorable Nonresponse in Surveys Subject to Item Nonresponse or Attrition

Analysts of cross-sectional or panel surveys often base inferences about relationships between variables on complete units, excluding units that are incomplete due to item nonresponse or attrition. This practice is justifiable if exclusion is ignorable in an appropriate sense. This paper characterizes certain types of ignorable exclusion in surveys subject to item nonresponse and develops tests...

Item nonresponse to financial questions in household surveys : An experimental study of interviewer and mode effects ∗

Abstract: We analyze nonresponse to questions on financial items such as income and asset holdings in household surveys using data from a controlled field experiment. As part of the SAVE study, a representative survey conducted in Germany in 2001, questions on household income and financial assets were administered using different modes (personal interview vs. drop-off questionnaire). The data ...

Designing Surveys Acknowledging Nonresponse