The objectives of these problems are measured in different units.
Behavioural problems are measured in eight domains, namely, emotionally reactive, anxious/depressed, somatic symptoms, withdrawn behaviour, sleep problems, common/non-specific problems, attention problems and aggressive behaviour.
The behavior problems are measured with 120 items on a 3-point Likert scale, consisting of 'not true'(0), 'sometimes true'(1) and 'very/often true'(2).
Work-related problems are measured with eight items: having problems with specific work tasks, finishing work, arranging the workplace, commuting, communicating with colleagues, communicating with supervisors, accepting the disease, and balancing work and life at home.
Classically, the performance of estimators in statistical learning problems is measured in terms of their predictive ability or estimation error as the sample size n grows.
The ability to solve various types of problems was measured with the scores in each test.
Sleep problems were measured by the two validated instruments Karolinska Sleep Questionnaire (KSQ) and Epworth Sleepiness Scale (ESS).
The quality of the representation of problems was measured with the categories, their "frequencies" (number of problems accounted for), and the time required in each categorization task.
For the study, 293 people over age 30, all without heart problems, were measured for brain activity, bone marrow activity and inflammation of the arteries.
In brief, the symptom load of electromagnetic hypersensitive patients on a psychometric scale measuring intensity of various bodily complaints, cognitive and mood annoyances, and sleeping problems were measured.
