I am fitting a subdistributional hazards model (Fine, Grey 1999) for multiple causes of death in a mortality incidence model following diagnosis of cancer. The researchers are interested in a nomogram, basically a type of risk prediction that allows for multinomial failures. I am struggling to connect cumulative incidence (a pivotal concept to competing risk models analogous to survival in a Cox model).
Are the coefficients output by a subdistributional hazards model still interpreted as a log-hazards ratio as with a Cox model? I observe that taking 1-Survival in a traditional survival model yields an incidence curve when only one outcome is available. I note that the output from this type of model outputs results which do not require the survival curve to approach 1. The multiple cumulative incidence curves "appear" proportional in the same way that S-shaped survival curves appear proportional when stratified by Cox model coefficients (e.g. proportional hazards).
If such an interpretation is acceptable, then of what is the hazard exactly? It is easy to think of a hazard when it refers to either death or censoring. But allowing for multiple outcomes confuses me somewhat.