TEST FOR LINEAR TREND IN 2XK ORDERED TABLES WITH OPEN-ENDED CATEGORIES

A method of evaluating trend (positive or negative) in 2 x K ordered t ables is suggested for cases in which the scores for the first (K - 1) categories are known a priori but the score for the last category is not known. Such a category is termed as open-ended category in this pa per. Ordered tables with an open-ended category are often encountered while evaluating the Cochran-Armitage-Mantel (CAM) trend. In the prese nt paper, the distribution of the test statistic is presented and simu lations are carried out to check the asymptotics. The method is then e xemplified by an existing data set.