Since structural tests are complex to instrument, a specific full-field measurement technique is developed.
Functional tests, which measure platelet activity in the presence of the patient's serum and heparin, e.g. heparin-induced platelet aggregation and the serotonin release assay offer greater specificity; however, these tests are complex and technically demanding.
All of these tests are complex and require skilled health care workers and laboratory facilities for the analysis of samples, which are often a challenge in resource-poor settings.
Determining the benefits of a screening test is complex, particularly when information from randomized trials is lacking.
Means-testing is complex, inefficient and costly in terms of administration and penalise those who have saved, whereas universal benefits for pensioners ensure all those who need them do receive what they should.
Therefore, these tests and numerical results show that the state of stress in a push-out test is complex, varies with the load and seems to be most likely not representative of the state of stress in a flexural member.
"Each test is complex, and when you have each provider doing slightly different tests, it complicates it even more". For example, a consumer test to determine whether someone is a carrier for cystic fibrosis might not screen for all the genetic permutations that trigger the disease, meaning that a negative result could promote a false sense of security.
Of course in clinical practice the decision to perform a diagnostic test is complex and is influenced by both its value and the patient or physician preferences.
Repeat testing is complex with studies describing individuals having multiple HIV tests.
Worthington and Myers [ 40] suggest that the anxiety associated with HIV testing is complex and is related to risk perceptions, stigma, and the patient-provider power dynamic.
