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Last modified: Jan 22, 2003 Printer friendly version : [PDF] [PS] NIR predictions of HPLC measurements II Key words:   Randomized Blocks, Paired design, missing values Description In a pharmaceutical company the use of NIR (Near Infrared Reflectance) spectroscopy was investigated as an alternative to the more cumbersome (and expensive) HPLC method to determine the content of active substance in tablets. Number of observations: 20 tablets Missing values: 5 on each variable. Variable                Description hplc The HPLC measurement nir The NIR predicted value Source Brockhoff and Thierry-Carstensen (2003). Test set validation using simple statistical methods. Submitted to: Journal of Chemometrics. Analysis Randomized block design analysis: ANOVA with random tablet effect and fixed method (NIR/HPLC) effect. Optimized for Microsoft Internet Explorer 6.0 for Windows webmaster