Convenience sampling: The elements or participants are chosen on the basis of their nearness to the researcher. The people in close proximity can be studied and analyzed easily and quickly, as there is no other selection criterion involved. Researchers simply choose samples based on what is most ...
Results: Imprecision was calculated from replicate measurements of hCG on the different sample dilutions. Imprecision ranged from 1.0% to 18.9% and 1.1% to 5.3% for the WHO 4th IS and patient sample dilutions, respectively. Using a maximum allowable error of 12.5% for hCG measurements, we fou...
Two programs (A, B) allowed us to adjust automatically segmented nodule boundaries and revise volume measurements (Aa, Ba). The measurement process was repeated at one-week intervals. Repeated measurements obtained using the same approach were averaged, and a total of 7 different volume ...
Maternal and short-term neonatal outcomes were compared between cycles with a slow elevation (n = 71) and a "normal" elevation (n = 632) in hCG values. Multivariate analysis was used to control for potential confounders. MAIN RESULTS AND THE ROLE OF CHANCE. There were no differences between...
Each blastocyst was measured, and the ratio between the ICM diameter and the inner diameter of the embryo was calculated. The blastocyst with the highest ratio was chosen for transfer. Serum levels of the β-subunit of hCG (β-hCG) hormone were measured 14 days after oocyte retrieval. Clinica...
Finally, different ancillary datasets were collected during the campaign, being the most relevant for this study the aboard dual-band GNSS information for the precise positioning of the aircraft trajectory, the inertial information provided by the inertial measurements unit (IMU) to determine the relati...
There are five plausible (and not mutually exclusive) theories predicting the Hadley Cell width based on different thermodynamics considerations. Examining the changes of the variables related to different theories enables us to obtain a better understanding of Hadley Cell width changes. The first theory...
different combinations of top lumbar vertebral amounts renormalized for level-specific differences in people from the Manitoba Bone Density Program aged >40 many years with standard assessment of TBS and FRAX. TBS measurements for L1-L3, L1-L2 and L1 alone had been computed after renormalization ...
manipulated in different ways, as well as analytical methods that are matrix dependent, thus introducing biases into the traceability chains. To correct for this, split sample measurements in large numbers of patient samples should be used, which will however, violate the idea of the traceability ...
even tests that have a very low chance of giving a false positive in an individual case will give more false than true positives overall.[2] So, in a society with very few infected people—fewer proportionately than the test gives false positives—there will actually be more who test positiv...