Miscellaneous Topics

The statistical procedures appearing in Radiology and the AJR were analyzed to determine the types of statistical tests used in major articles, their relative frequencies, and whether these methods differed according to radiologic subspecialty. Six hundred sixty-nine major articles published in Radiology or the AJR during 1993 were reviewed for statistical content. These articles were first classified by radiologic subspecialty or principal focus according to the named journal section where each appeared (e.g., breast imaging, musculoskeletal radiology, neuroradiology). The statistical methods used in each article were then assigned to one of 18 categories (e.g., descriptive, basic t- and z-tests, correlation/regression techniques, and nonparametric statistics). Of the 669 major articles analyzed, 294 (44%) used no statistical methods or descriptive statistics only, 179 (27%) used only one type of statistical method, 102 (15%) used two methods, and 94 (14%) used three or more methods. Statistical techniques were most likely to be used in articles classified as cardiac (85% used statistical analysis) or contrast agents (79%), but least likely to be used in gastrointestinal/abdominal imaging (45%), radiotherapy (44%), or miscellaneous topics (29%). Five basic categories of statistical methods--basic z- and t-tests, basic decision statistics (sensitivity, specificity), basic contingency table analysis (chi 2, McNemar), correlation/regression techniques (linear regression, Pearson coefficients), and basic nonparametric tests (Wilcoxon, Mann-Whitney U)--account for the complete statistical analysis appearing in approximately 80% of the major articles. Approximately half the major articles appearing in Radiology or AJR used no statistics, descriptive analysis only, or a simple inferential test employing t-tests or confidence intervals; advanced statistical techniques were found in only 20% of articles. Statistical analysis was most likely to be used in articles dealing with cardiac radiology or contrast agents and least likely to be used in articles on abdominal/gastrointestinal radiology, radiotherapy, and miscellaneous radiologic topics.

Basic concepts of sampling. Part 1 Single-stage sampling: simple random sampling use of ancillary variables in simple random sampling systematic sampling varying probability sampling - sampling with probability proportional to size choice of sampling units - cluster sampling size of sample - cost and error self-weighting designs. Part 2 Stratified single-stage sampling: stratified sampling - introduction stratified simple random sampling stratified varying probability sampling size of sample and allocation to different strata self-weighting design in stratified single-stage sampling. Part 3 Multi-stage sampling: multi-stage sampling - introduction multi-stage simple random sampling multi-stage varying probability sampling size of sample and allocation to different stages self-weighting design in multi-stage sampling. Part 4 Stratified multi-stage sampling: stratified multi-stage sampling - introduction stratified multi-stage simple random sampling stratified multi-stage varying probability sampling size of sample and allocation to different strata and stages self-weighting designs in stratified multi-stage sampling. Part 5 Miscellaneous topics: miscellaneous sampling topics errors and biases in data and estimates planning, execution and analysis of surveys use of computers in survey sampling appendix 1 - list of notations and symbols appendix 2 - elements of probability and proofs of some theorems in sampling appendix 3 - statistical tables appendix 4 - hypothetical universe of 600 households in 30 towns in 3 states appendix 5 - case study - Indian national sample survey, 1964-5 appendix 6 - multi-country survey programmes.

Solid state physics: crystal structures and properties electron theory energy bands and semiconductors other topics. Relativity: special relativity general relativity relativistic cosmology. Miscellaneous topics: history of physics and general questions measurements, estimations and errors mathematical techniques.

Anesthesia and Orthopaedic Surgery.

After understanding the most profound ideas behind the concept of dynamic libraries, and before diving into the details of the toolbox of the software professional dealing with libraries on daily basis, it is a good moment to take a closer look at a few remaining issues. First, let’s take a closer look at the concept of plug-ins, the omnipresent mechanism of seamlessly extending the basic functionality of a framework. Then, I will point out a few practical implications stemming from the concept of dynamic libraries. Finally, I will take a closer look at a few miscellaneous topics which a developer may encounter in the everyday work.

Chapter 12 - Miscellaneous Topics

Chapter 11 - Miscellaneous topics

5 - Miscellaneous topics

Chapter 10 - Miscellaneous topics in regression rank tests

Chapter 17 - Miscellaneous topics

21 - Miscellaneous Topics

chapter twenty-four - Miscellaneous Topics

Chapter 25 - Miscellaneous Topics

There are several abdominal conditions which are not organ-specific because they primarily involve the intra-abdominal spaces. These lesions are considered in this chapter and include retroperitoneal space masses (excluding lymphadenopathy), intraabdominal abscesses and ascites. CT-guided aspiration techniques are also discussed. Finally, the spleen is included here because CT examinations are rarely undertaken primarily for the investigation of this organ.

Chapter 8 - Miscellaneous Topics