Treatment use in prognostic model research: a systematic review of cardiovascular prognostic studies

Table 1 General characteristics of the included articles

Characteristics of included studies (n = 302)
Study type*
Development	124
Validation	146
Incremental value assessment	135
Over a set of core predictors	81
Design of study used for prognostic modelling
Observational	286
Randomised trial	16
Follow-up period (years)	10, (6, 12); 15%^a
Prediction horizon (years)	10, (8, 10); 12%^a

*One article may have multiple study types (e.g. the development and validation of a model); thus values do not sum to the total number of included articles
^aValues represent as follows: median (lower quartile, upper quartile), percentage of studies that did not report this information

ISSN: 2397-7523