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YAMSIZ
Portion size: Yams

Codes and Frequencies



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Description

For sample adults, YAMSIZ reports the respondent's average portion size (small, medium, or large) when eating sweet potatoes or yams. A medium portion was defined as ½ cup. Researchers may wish to use YAMSIZ in conjunction with YAMNO, which reports the frequency with which the respondent ate yams or sweet potatoes, and YAMTP, which reports the corresponding time units.

YAMSIZ is part of a series of variables related to food, food knowledge, and cancer. For related variables, please use the IPUMS NHIS search function and drop-down menus.

Comparability

Beginning in 2010, sweet potatoes are included with other types of potatoes (POTATONO).

Changes in survey design (e.g., quarters in which the supplement was collected) may affect raw frequencies, but do not affect comparability of the variable. As always, data users should use the prescribed IHIS weights.

Universe

  • 1987: Half of sample persons age 18+ (excluded from CACT) who consumed yams during the past year.
  • 1992: Half of sample persons age 18+ in quarters 1 and 2 and 2 weeks of quarter 3 (excluded from CACT) who consumed yams during the past year.

Availability

  • 1987, 1992

Weights