Figure 3
From: Development of an Algorithm to Identify Patients with Physician-Documented Insomnia
Insomnia algorithm and cohort development. A total of 600 patients were manually labeled: 230 patients had insomnia, 270 patients did not have insomnia, and 100 patients did not have a clear insomnia status. The 500 patients with known insomnia status were used to develop the algorithm; 7 of these 500 patients were excluded because their age was below 18 (date of death or date of the end of the study). Additionally, two-thirds of these (328) served as a training set, while the rest (165) served as a validation set.
