On the other hand, there is the problem that for specific situations reliable information needed for assessing the hazard potential of a substance is missed when only the established standard assessment schemes, which consist mostly of laboratory tests, are used.
In some cases patient confidentiality in an interview could not be achieved in the hospital ward and for this reason self report data on frequency of heavy episodic drinking and use of substances prior to the injury are missing for 25% of the patients.
Women with missing values are excluded from the corresponding analyses where one or more substances contributing to a grouped outcome are missing, the whole grouped outcome is treated as missing.
If they're meant as a style statement, it's one that doesn't resonate at all with his characters; if the style conveys any substance, it's missing from the film.
The debate also featured a few moments of substance that were missing from the first presidential debate.
Studies by DuPont [252] provide little information about correlations of PFOA exposure at the workplace and death rates or incidence of cancer since data on exposure, contact with other substances, and lifestyle were missing.
"The substance of dialogue was missing from the agenda," he said.
For example, if an element like transportation, job placement, child care or substance-abuse treatment is missing, much of the rest of the taxpayer investment is often wasted.
In the present study, girls for whom information on age at menarche and substance use outcomes was missing were excluded from the analysis.
We excluded any records that were alcohol poisoning only, had no record of what substances were taken, or were missing APACHE data (n = 156).
