For instance, up to three "main" substances were detected in some gallstones (N = 5 with three "main" substances).
These stones would contain 70% or more cholesterol as no other "main" substance was detected.
The authors use the modern way of putting "Methods" at the end, which creates difficulties for a paper whose main substance is a new method.
Where participants met DSM-IV abuse or dependence criteria for more than one substance, the main substance was identified as that perceived by the participant to be most problematic or, if the person did not make such a distinction, the most frequently used.
19 The main causative substances were, in descending order, pesticides (T60) (33.6%, 1284 cases), antiepileptic, sedative-hypnotic and antiparkinsonism drugs and psychotropic drugs, not elsewhere classified (T42, T43) (22.1%, 847 cases) and contact with venomous animals (T63) (13.4%, 512 cases).
Prescription drug abuse is on the rise, leading to more pharmacy robberies, and the main substances involved are oxycodone and hydrocodone.
Parity would be expected to be associated with lower organochlorine concentrations, as lactation is a main route by which these substances are excreted.
Substances are independent existences.
The main theories as to why people with psychosis use substances are presented.
Main substance classes are polycyclic aromatic hydrocarbons (PAHs), such as 3-methylcholanthrene (3-MC) and benzo(a pyrene [B(a P], dioxins such as 2,3,7,8-tetrachlorodibenzo 2,3,7,8-tetrachlorodibenzochlorinated biphenyls (PCBs).
