For the CVLT and WAIS-R, separate multivariate analyses of covariance (MANCOVA) with age, sex, education, duration of illness, and center as covariates were used.
However, there was no association between Stroop performance and subthreshold depression (as measured by the HAMD-21), subthreshold manic symptoms (as measured by the YMRS), years of education, duration of illness and number of hospitalizations (all p's > .05).05
The median education duration was 4.5 years (0-18 years).
The prevalence of obesity increased with the level of education (duration of education) in both sexes.
Ethnicity, education, duration of working shift and working duration after controlling for age never reached significance.
It included questions regarding level of education, duration of employment, working settings, and professional rank.
Frailty was associated with age, education, duration of heart failure, number of hospitalizations, and New York Heart Association class.
The demographic information (name, age, sex, address, education, duration of diabetes) was collected from customized designed hospital based software.
Data on patients' marital status, occupation, education, duration of cough in days or weeks and sputum results were collected.
The demographic section included questions on age, education, duration of sex work, place of work, and monthly income.
