Optimizing portion-size estimation aids: a formative evaluation in Malawi.

ABSTRACT:

Objective

To investigate preferences for and ease-of-use perceptions of different aspects of printed and digitally displayed photographic portion-size estimation aids (PSEA) in a low-resource setting and to document accuracy of portion-size selections using PSEA with different visual characteristics.

Design

A convergent mixed-methods design and stepwise approach were used to assess characteristics of interest in isolation. Participants served themselves food and water, which were weighed before and after consumption to measure leftovers and quantity consumed. Thirty minutes later, data collectors administered a meal recall using a PSEA and then a semi-structured interview.

Setting

Blantyre and Chikwawa Districts in the southern region of Malawi.

Participants

Ni

SUBMITTER: Schnefke CH 

PROVIDER: S-EPMC10260612 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature