For each item in the test it is assumed that there is a "dose response" curve that describes the probability of obtaining the correct answer (the response) as a function of the values of the latent trait (the dose).
"It's easy for people to provide the answer, the response rate is high, and it's not a sensitive question," explains James Treat, chief of the ACS office in Washington, D.C.
As in the scoring of the original English version, if a patient did not indicate an answer, the response was coded as 0 (the same code used to indicate "does not apply").
If the child could not provide a lucid answer, the response was nevertheless entered in a log-file for future decision/classification. Prevalence data were reported for each variable in each cross-sectional study.
a Since some respondents gave 2 answers, the responses totaled 29 for 24 people interviewed.
However, for multiple-choice answers, the responses will be more distributed, and it will not be as easy to use the process of elimination to pick an answer.
The interviews were held in conversation form and depending on the character of the answers, the responses were explored using further questions.
Of those who answered, the response was most positive for 75% of hospitals who probed for assumptions.
Of the 2,803 questionnaires sent 1,613 completed lists returned, and after excluding 151 questionnaires that were not answered by the client (as someone else gave the answers) the response was 52%.
The self-test would periodically find and eliminate incorrect answers, based on the responses that users provide, he said.
