Codes and Frequencies
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Description
For sample adults who had used natural herbs for their health (2002) or had taken herbal supplements (2007) during the past 12 months (HERYR), HERLCONVHP identifies those who had let a conventional medical professional know about their use of herbs.
Data Collection and Related Variables
In 2002, interviewers asked, "During the past 12 months, did you let any of these conventional medical professionals know about your use of natural herbs?" In 2007, the question was nearly identical but referred to "herbs" rather than "natural herbs." In both years, the interviewer then handed the respondent a card listing several types of conventional health care practitioners (with fewer categories included in 2002 than in 2007). If the answer was affirmative (i.e., a "Yes" response in HERYLCONVHP), interviewers asked the follow-up question, "Which ones [did you tell]?" and noted, "You may choose more than one."
[show more]The list for 2002 (and the associated IPUMS NHIS variables, which are also present for 2007) included the following medical professionals:
- Medical Doctor (M.D.) (including specialists) (HERYLMD)
- Nurse Practitioner/Physician Assistant (HERYLNURS)
- Psychiatrist (HERYLPSYCHI)
- Dentist (including specialists) (HERYLDENT)
The list for 2007 included additional categories of conventional medical professionals, which are shown below with the associated IHIS variables (available for 2007 only):
- Doctor of Osteopathy (D.O.) (HERLDO)
- Psychologist/Social Worker (HERLPSYCHO)
- Pharmacist (HERLPHARM)
For more information about the full range of variables related to natural herbs, including a definition of "natural herbs," see HERYR.
Comparability
The list of conventional medical practitioners on the card shown to respondents was shorter in 2002 than in 2007. Thus, a "No" response under the 2002 question wording might have been a "Yes" response under the 2007 question wording.
[show more]For example, persons who had told a pharmacist, doctor of osteopathy, or psychologist or social worker about their use of herbal supplements would probably have answered "no" to the 2002 question wording but would have answered "yes" to the 2007 question wording for HERYLCONVHP. Researchers should thus exercise caution in comparing results from HERYLCONVHP for 2002 and 2007.
A second difference in HERYLCONVHP between 2002 and 2007 is the number of response categories.
[show more]In 2002, the response categories included "Yes," "No," and "Did not go/talk to any of these." These 2002 categories might seem to distinguish persons who did not see any of the listed conventional medical professionals (and thus had no opportunity to report their use of herbs) from persons who chose not to report their herb use to a conventional medical professional. But among persons who answered "No," it is unclear how many meant, "No, I did not tell any of these conventional medical professionals, even though I saw at least one of them" and how many meant, "No, I did not tell any of these conventional medical professionals, and I did not see any of them." Perhaps because of this ambiguity, response categories were limited to "Yes" and "No" in 2007.
To maximize comparability across years without sacrificing detail, IHIS uses composite coding for this variable.
[show more]The first digit indicates broad categories of "No" (codes beginning with 1), "Yes" (codes beginning with 2), and "Unknown" (codes beginning with 9). The second digit supplies detail present in only some years, such as distinguishing between "No" (IHIS code 10) and "Did not go/talk to any of these" (IHIS code 11) in 2002. Researchers who wish to maximize comparability between 2002 and 2007 can combine categories beginning with the number 1 into a single "No" category.
A final difference in HERYLCONVHP between 2002 and 2007 occurs in the wording of the question. In 2002, interviewers asked about the use of "natural herbs," while in 2007 they asked about the use of "herbs" without specifying that the herbs be "natural."
Universe
- 2002: Sample adults age 18+ who have used natural herbs for their health during the past 12 months.
- 2007: Sample adults age 18+ who have taken herbal supplements during the past 12 months.
Availability
- 2002, 2007
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Weights
- 2002, 2007 : SAMPWEIGHT