Anaesthesiologists are increasingly more involved in perioperative patient care wherein interpretation of special investigations is crucial to making therapeutic and prognostic decisions. Furthermore, anaesthetic journal publications increasingly rely on diagnostic tests, without paying sufficient attention to the methodology for evaluation of the predictive ability of these tests, particularly...

Deciphering Diagnostic Tests covers over 400 laboratory tests and diagnostic procedures, organized by test type and body system. Coverage includes test purpose, normal results, abnormal results, patient preparation, and procedure and post-test care. Icons include Action Stat! for urgent interventions, Alert for important clinical facts, Do's & Don'ts for technique and intervention advice, and D...

Diagnostic Techniques are increasingly employed by utilities to manage their infrastructure assets. These are sophisticated techniques being applied to complicated and diverse real world networks. Consequently there are many concerns that these techniques a) are not accurate and b) damage the system by, at the very least, robbing other areas of vitally short resources. Thus there is a compellin...

A common way of allowing heterogeneity between individuals in models for lifetime data is to introduce an unobservable individual random effect Z. In a proportional hazards framework, the individual’s hazard becomes zhb(t) where hb(t) is the baseline hazard. The random variable Z is often assumed to follow the Gamma or Inverse Gaussian distribution. We develop here diagnostic tests for these as...

Each test procedure described below involves the specification of a null hypothesis, which is the hypothesis under test. Output from a test command consists of the sample values of one or more test statistics and their associated probability numbers (p-values). The latter indicate the probability of obtaining a test statistic whose absolute value is greater than or equal to that of the sample s...

Deciphering Diagnostic Tests covers over 400 laboratory tests and diagnostic procedures, organized by test type and body system. Coverage includes test purpose, normal results, abnormal results, patient preparation, and procedure and post-test care. Icons include Action Stat! for urgent interventions, Alert for important clinical facts, Do's & Don'ts for technique and intervention advice, and D...

Tests can be used either diagnostically (i.e., to confirm or rule out the presence of a condition in people suspected of having it) or as a screening instrument (determining who in a large group of people has the condition and often when those people are unaware of it or unwilling to admit to it). Tests that may be useful and accurate for diagnosis may actually do more harm than good when used ...