Fig. 2

Boxplots of the comorbidity indexes based on the PASSI data (related to the 2019 year with \(n= 31,746\) respondents) and GBD weights. The left boxplot corresponds to the distribution of the combined disability weights using Eq. (1) (i.e., additive approach), the center boxplot refers to the combination defined in Eq. (2) (i.e., maximum approach), and finally, the right boxplot corresponds to the comorbidity index created using Equation (3) (i.e., multiplicative approach)