Sentence examples for were derived ever from inspiring English sources
Four variables were derived: ever use of any drugs, and past year use of: any drugs; cannabis-only (i.e. no other drugs-henceforth 'cannabis-only'); and any other drug(s) (including respondents taking other drugs and cannabis-henceforth 'other drugs').
While this could suggest that the diseases considered are not on the causal pathway between smoking and outcome, the lack of attenuation could be because these variables have not adequately captured disease history or because they were derived using history of ever having these conditions and thus do not capture smoking-induced incident disease.
The disease estimates used in this study were derived from scientific publications where ever possible and complemented by expert opinion consultation.
On the basis of questionnaires completed by partners themselves, data were derived on partner's alcoholism (ever suffered from alcoholism versus never) and alcohol drinking habits (≥1 units/day versus less, before the pregnancy).
Our measures of tobacco smoking were derived from three questions resulting in two measures: ever smoker and current smoker.
(The titles were derived from the scores).
Samples were derived from blood.
Analytical results were derived manually.
Tissues were derived from 3 independent experiments.
Depth measures were derived from SCUBA gauges.
Some were derived from GPS tracking.
