I have 60 likert-type questions (5 items) (and their responses of course...) and age. Age as raw data is continuous. On a duplicate file I have categorized age in 5 age groups (ordinal) as I want to test whether age can affect the adoption of digital tools in the learning process according to some specific groups (Gen X, Y, Millenials, etc). When I ran Spearman's rho for age as ordinal data and likert responses I got statistically significant results only for 3 combinations (of age and likert responses). However, when I ran the ordinal regression (age as continuous, likert as ordinal) it gave me 22, at least the p-value in the model fitting information was <.05 (unless I shouldn't have looked at this...). In addition, all 22 results have warning from the SPSS that 65% (more or less) cells (i.e., dependent variable levels by combinations of predictor variable values) are with zero frequencies. Should I take the results of the ordinal regression into account? Am I doing sth wrong? Should I just keep the Spearman's rho results? Thank you (and sorry for my english)