Fig. 5
From: Using random forests to model 90-day hometime in people with stroke
Top left – Two-way partial dependence plot depicting the relationship between frailty and 90-day hometime stratified by ambulance use. Top right – Two-way partial dependence plot depicting the relationship between stroke severity and 90-day hometime stratified by ambulance use. Bottom – Two-way partial dependence plot depicting the relationship between age and 90-day hometime stratified by ambulance use. Frailty scores range from 0 to 99 with higher scores indicating greater risk of frailty (scores < 5 indicate low risk of frailty, scores 5–15 indicate moderate risk of frailty and scores > 15 indicate high risk of frailty) [18]. Stroke severity is measured using the Passive Surveillance Stroke seVerity Indicator (PaSSV) where scores < 4 indicate severe stroke, scores 4–8 indicate moderate stroke severity, and scores > 8 indicates mild stroke severity [19]