Sentence examples for too few events from inspiring English sources

†The odds ratio for this variable was not calculated because there were too few events.

Comparisons for other subgroups are limited either by too few events (Gleason scores 4 5, tumour stage T1a T1b) or small group sizes (Tumour stage T3 and T4) and are in consequence not shown here.

** Too few events for analysis.

‡Hazard ratio not estimable; too few events.

Even so, there were too few events to draw any definitive conclusions.

There were too few events to calculate cause-specific hazard ratios.

Overall, among all study groups of children, univariate analysis showed that HIV infection was non-significantly associated with severe anaemia (cases HR 1.9, 95% CI 0.7 5.0; HC HR 4.2, 95% CI 0.4 40.6; CC-too few events to compute HR).

Other studies are small and have too few outcome events to draw firm conclusions.

Too few outcome events were available to test for interaction in quartiles, so we tested it in a dichotomised (median cut) model.

Quantifying the predictive ability of a model on the same data from which the model was developed (often referred to as apparent performance) will tend to give an optimistic estimate of performance, owing to overfitting (too few outcome events relative to the number of candidate predictors) and the use of predictor selection strategies (Steyerberg et al, 2003).

The reason is we expect from the protein structure to observe 3 main unfolding events (peaks) and several side peaks; while 11 and 101 points gave too many or too few unfolding events, 51 points gave the expected number of events.