LOINC long common name : PhenX - caffeine protocol 050301;
LOINC short name : PhenX - caffeine protocol;
LOINC description : These self-administered questions can be used to inquire about the frequency of an
individual's consumption of beverages containing caffeine. Various time frames, ranging
from once per month to six or more times per day, are arrayed on the response card
for the respondent to use in assessing caffeine intake. The protocol also includes
scoring procedures to convert an individual's responses to an estimate of caffeine
intake in milligrams.;