Codes and Frequencies
Description
For sample adults, VEGETP reports the time unit (day, week, month, or year) that corresponds with the frequency with which the respondent reported vegetables other than salads, white potatoes, and beans. VEGETP should be used in conjunction with VEGENO, which reports the corresponding frequency stated by the respondent.
VEGETP is part of a series of variables initiated in 1987 related to food, food knowledge, and cancer.
Comparability
Prior to 2000, this specific question asked respondents about servings of vegetables they ate in the past week. Beginning in 2000, this variable is part of the general food frequency questionnaire, and respondents are asked about they usually ate in the past month. The structure of the responses beginning in 2000 excluding 2005 (recording number of times a food was consumed and the time unit associated with that frequency) makes it possible to compare response categories even with different recall periods. In 2005, this format of separate frequency and time units was not used; instead respondents' answers were organized into pre-defined categories. Researchers interested in using all years of available data may consider seeing the 2005 variable VEGMO, and modifying VEGENO and VEGETP to correspond to the pre-defined categories from 2005.
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 IPUMS NHIS weights.
Universe
- 1992: Half of sample adults age 18+ in quarters 1 and 2 and 2 weeks in quarter 3 (excluded from CACT supplement).
- 2000; 2010; 2015: Sample adults age 18+.
Availability
- 1992, 2000, 2010, 2015
Weights
- 1992, 2000, 2010, 2015 : SAMPWEIGHT
