tetrachoric correlation

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Noun1.tetrachoric correlation - a correlation coefficient computed for two normally distributed variables that are both expressed as a dichotomy
statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters
coefficient of correlation, correlation coefficient, correlation - a statistic representing how closely two variables co-vary; it can vary from -1 (perfect negative correlation) through 0 (no correlation) to +1 (perfect positive correlation); "what is the correlation between those two variables?"
References in periodicals archive ?
and the I had used tetrachoric correlation analysis to assess the relationship between the images and grain patterns.
N = 4,539 patients at individual level of analysis,J= 223 clinics; standard deviation omitted for dichotomous variables tetrachoric correlations reported between dichotomous variables; Spearman correlations reported between dichotomous and continuous variables; high correlation between HbAlc exam and control reflects the fact that scores require conducting tests.
To address the concern that Pearson product-moment (PPM) correlations may not be appropriate, we also conducted the analysis on a matrix of poly- and tetrachoric correlations and compared the results.