Assortative mating, the tendency for mate selection to occur on the basis of similar traits plays an essential role in understanding the genetic variation on academic achievements and intelligence (IQ), it is also an important mechanism explaining spousal concordance. We used a subset of The Collaborative Study on the Genetics of Alcoholism sample to study the mating patterns in 84 pairs of spo...

BACKGROUND Anemia is a widespread public health problem associated with an increased risk of morbidity and mortality, especially in pregnant women. This study examined the agreement between a portable hemoglobin photometer and a laboratory analyzer in determining hemoglobin level in pregnant women. METHODS This study recruited 69 pregnant women in Tibet, China. Capillary blood samples were ta...

Dye switching and biological replication substantially increase the cost and the complexity of cDNA microarray studies. The objective of the present analysis was to quantitatively assess the importance of these procedures to provide a quantitative basis for decision-making in the design of microarray experiments. Taking advantage of the unique characteristics of a published data set, the impact...

BACKGROUND The pressure-recording analytical method is a new semi-invasive method for cardiac output measurement (PRAM). There are no studies comparing this technique with femoral artery thermodilution (FATD) in an infant animal model. METHODS A prospective study was performed using 25 immature Maryland pigs weighing 9.5 kg. Fifty-eight simultaneous measurements of cardiac index (CI) were mad...

Background: Infertility is defined as 1 year of unprotected intercourse without pregnancy. The main causes of infertility are as follows: male factor, Both mail and female, as well as unexplained etiologies. Tubal and peritoneal factors Aceount for 30%-40% of causes of female infertility. Tubal factors include damage and obstraction of the fallopian tube, usually associated with previous pelvic...

  Objective: IQSPECT is an advanced high-speed SPECT modality for performing myocardial perfusion imaging (MPI), which uses a multi-focus fan beam collimator with resolution recovery reconstruction. The aim of this study was to compare IQSPECT compared with conventional SPECT interms of performance based on standard clinical protocols. In addition, we examined the concordance between convention...

Background: Different diagnostic modalities to investigate atherosclerotic carotid artery disease (ACAD) are nowadays available. The aim of this study was to test the concordance of the findings of the two most widely used diagnostic modalities namely computed tomography angiography (CTA) and doppler ultrasonography (DUS). Material and methods: 29 patients with acute ischemic stroke were subjec...

OBJECTIVE To explore the correlation and concordance between end-tidal carbon dioxide and arterial carbon dioxide partial pressure, and confirm the experience of the general consensus among service environments. DESIGN A prospective cross-sectional analysis. SETTING Two respiratory service units in Hong Kong. PARTICIPANTS Two hundred respiratory patients were recruited, in whom 219 sets o...

OMICS data are increasingly available to biomedical researchers, and (biological) replications are more and more affordable for gene microarray experiments or proteomics experiments. The functional relationship between a pair of genes or proteins are often inferred by calculating correlation coefficient between their expression profiles. Classical correlation estimation techniques, such as Pear...

In this paper we are going to explain some of the problems we have found in our attempts to mechanize the Historical Dictionary (D.H.) of the Spanish language. Our experimental project is a collaboration of the Royal Spanish Academy (R.A.E.) and the Computer Center of the University of Madrid (CCVM). There are, indeed, many procedures for making concordances of a text, and those procedures are,...