Binary logistic regression
Why a yes/no outcome breaks linear regression.
Slides · Dataset
About 40 minutes to complete
Enrol to open the slides and download the data.
What this module covers
why a yes/no outcome breaks linear regression; odds, odds ratios and the log odds, explained with arithmetic rather than assertion; coding the outcome so the odds ratio points the right way; the menu path including Categorical and Options; reading the output - omnibus test, Nagelkerke R-squared, Hosmer-Lemeshow, the classification table, and the variables in the equation; interpreting Exp(B) and its confidence interval in a sentence; adjusted vs unadjusted odds ratios; events-per-variable and how many predictors your sample can carry; APA reporting and the OR table.
The dataset
Antenatal care and birth outcome — Sigma teaching dataset
A teaching dataset of 300 cases, generated from a fixed seed so every figure in the module reproduces exactly.
- CodebookIncluded
- Dataset (CSV)Included
- Dataset (CSV)Included
- SPSS syntaxIncluded