Non-proportional hazards. Flexible parametric model. First four years of follow-up are not plotted. Ages 25–44 years at HUNT1. Severity levels combined; thus the model is mortality hazard ratio (HR) for those with disability vs no-disability at HUNT1.
Likelihood ratio test testing non-proportional hazards vs proportional hazards: motor impairment (p < 0.01), hearing impairment (p = 0.44), vision impairment (p = 0.05), motor impairment (p = 0.01), physical illness (p < 0.001), mental health problems (p = 0.71).