Telescoping causes overstatement in recalled food consumption: Evidence from a survey experiment in Ethiopia

Gashaw T. Abate, Alan de Brauw, John Gibson, Kalle Hirvonen and Abdulazize Wolle

No 1976, IFPRI discussion papers from International Food Policy Research Institute (IFPRI)

Abstract: Telescoping errors occur if survey respondents misdate consumption or expenditure episodes by including events from outside the reference period in their recall. Concern about telescoping influenced the design of early Living Standards Measurement Study (LSMS) surveys, which used a two-visit interview format to allow a bounded recall. This design fell out of favor although not for evidence-based reasons. Recent guidelines to harmonize food data collection in low- and middle-income countries by using one-week recall increase the relevance of telescoping because errors spread over a shorter period will loom larger. To provide evidence on telescoping, we conducted a survey experiment in Ethiopia, randomly assigning a balanced sample – either a two-visit bounded recall or a single visit unbounded recall. The average value of reported food consumption is 16 percent higher in the unbounded single visit recall relative to the two-visit bounded recall. Put differently, in this experiment, telescoping errors amount, on average, to an entire extra day worth of consumption being included in the report for the last seven days. Most of the error is explained by difference in reporting of spending on less frequently consumed, protein-rich foods, so apparent diet diversity and dietary quality indicators are likely to be overstated when using unbounded recall.

Keywords: surveys; households; living standards; diet quality; food consumption; diet; Ethiopia; Eastern Africa; Africa; Sub-saharan Africa (search for similar items in EconPapers)
Date: 2020
References: Add references at CitEc
Citations: View citations in EconPapers (4)

Downloads: (external link)
https://hdl.handle.net/10568/143562

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:fpr:ifprid:1976

Access Statistics for this paper

More papers in IFPRI discussion papers from International Food Policy Research Institute (IFPRI) Contact information at EDIRC.
Bibliographic data for series maintained by ().