Sentence examples for minus years from inspiring English sources
(2015), we perform our main estimations by using potential work experience calculated as age minus years of schooling minus six.
In a robustness check, we replace this measure by potential experience, measured as age minus years of schooling minus six.
As work experience is measured by age minus years of education minus 6, the correlation between our work experience variable and age is high (about 97%).
In all of the analyses reported here, y i is the log of self-reported weekly wage, Z i =1 if the individual identifies as black (and Z i =0 if white), and W i is a vector containing three covariates: "potential experience" (current age minus years of schooling minus 6) entered as a quartic, urban/rural status (a binary indicator), and census region (an unordered factor).
In the other surveys, we calculated this variable for both current (age at enrollment minus duration of smoking in years) and former (age at enrollment minus years since quitting and duration of smoking) smokers.
In the other surveys, age at smoking initiation was calculated both for current (age at enrollment minus duration of smoking in years) and former (age at enrollment minus years since quitting and duration of smoking in years) smokers.
The dependent variable was defined as the difference between the log-transformed radiological scores at year (i + 1) versus the scores year (i) using the differences of year 2 minus year 1, of year 3 minus year 2, and of year 4 minus year 3; each subject therefore contributed to up to three differences.
Age was calculated as year of survey participation minus year of birth and varied from 20 to 61 years.
As a measure of chronicity of symptoms, the duration of OCD was calculated as age minus year of symptom onset.
where Yi,t is the the log-transformed response variable for individual i at time t, similarly defined for prior times t−1 (minus 1 year), t−2 (minus 2 years) and t−3 (minus 3 years).
