Neural Networks for Survival Prediction in Medicine Using Prognostic Factors: A Review and Critical Appraisal

Table 2

General characteristics for the 24 studies. If multiple outcomes were predicted, multiple lines were used in the extraction sheet. Maximum number of lines was 34 (10 studies used multiple outcomes). For simulation studies, the number of predictors and percentage of events were not considered, unless they were fixed (e.g., not varied across simulations).

	Min	Qu.	Median	Qu.	Max	Excel lines
Total sample size	96	242	920	1616	361239	33
# of predictors	1	5	7	25.75	97	32
% of events	6.60	21.32	29.25	47.58	97.90	20