One multilevel model was established for each of the five items separately with adjustments for socio-demographic variables i.e., sex, age, highest level of obtained education, economic difficulties, country of origin and type of residence (categorized as presented in table 1).
Information is also obtained on education level, a proxy for socioeconomic status [ 109], and health and cognitive status, including the Armed Forces Qualification Test taken during basic training (if available) to determine whether cognitive status before combat is predictive of AD or PTSD.
They found that reasonable accuracy could be obtained predicting gender and education level.
In other words, they suppose that the professional experience gained prior to immigration was in jobs requiring exactly the education level obtained from formal schooling.
All variables were obtained from December 31 , 2008except education level, which was measured based on the level of education completed in North Korea.
Overall, the highest education level obtained by most village doctors (91.2%) was secondary school (3 years' medical training after graduating from junior high school) or less.
The aim of this paper is to compare the extent of missing data to questions about parents' highest education level obtained retrospectively from similar telephone and face-to-face representative population surveys.
A brief questionnaire was administered at the conclusion of each NGT meeting to obtain basic demographic data, education level, disease duration and whether the patient needed assistance in reading materials.
At a baseline visit, information on education level was obtained from an adult household member.
Demographic data (gender, age, race/ethnicity, primary language and education level) were obtained at the time of enrollment by the HIV counselor.
